ECAT Chemistry The Halogens and Noble Gases Chapter Test Online

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Chemistry

1. The metal used for making radiation shield is

Al

Fe

Pb

Zn

2. Which one of the following reacts with hemoglobin to form carboxuhaemoglobin?

CO₂

H₂O₂

CO

O₂

3. Which is the strongest acid

Cannot be predicted

HNO3

HCLO4

HCL

4. Which oxide of nitrogen is obtained on heating ammonium nitrate at 250°C?

Dinitrogen tetraoxide

Nitric oxide

Nitrogen dioxide

Nitrous oxide

5. The most abundant inert gas in the atmosphere is

Kr

He

Ar

Ne

6. SO3 is not dissolve directly in H2O because

The reaction does not go to completion

SO₃ is insoluble in H₂O

The reaction is quite slow

The reaction is highly exothermic

7. Because of its small size and due to restriction of its valence shell to an octet fluorine differs from other halogens, which behavior of fluorine is incorrect?

It has highest E.N

It restricts to oxidation state – 1 only

It has highest first I.E

It is more reactive than other halogens

8. The number of elements in the 4th period of periodic table is

8

32

18

10

9. Crystalline form of sulphur stale at room temperature is

Rhombic sulphur

Monoclinic sulphur

Plastic sulphur

Prismatic sulphur

10. Which of the following compounds is explosive in nature?

Hyponitrous acid

Nitrosyl chloride

Phosphorus trichloride

Nitrogen trichloride

11. The oxyacids of phosphorus in which phosphorus has the lowest oxidization state is

Pyro phosphoric acid

Orthophosphoric acid

Hypo phosphorous acid

Metaphosphoric acid

12. Which of the following noble gases does not have an octet of electrons in its outermost shell?

Radon

Helium

Argon

Neon

13. In the periodic table, the element with atomic number 16 will be placed in the group

Sixth

Third

Fourth

Fifth

14. Air is not a commercial source of which noble gas

Ar

Xe

Ne

He

15. The most powerful oxidizing agent among the halogens is

F₂

Cl₂

Br₂

I₂

16. What is the order of power of halogen as an oxidizing agent?

U₂>Br₂>I₂>F₂

I₂>Br₂>U₂>F₂

I₂>F₂>Br₂>U₂

F₂>Cl₂>Br₂>I2

17. An atom with atomic number 20 is most likely to combine chemically with the atom whose atomic number is

10

14

11

16

18. Which shows maximum catenation property?

O

Se

Te

S

19. As a fixing agent in photography, sodium thiosulphate is used for

Reducing solubility of AgBr

Preventing overdeveloping and fogging

Dissolving out unreacted silver bromide

Converting silver halides to metallic silver

20. Bond angle is minimum for

H₂O

H₂Te

H₂S

H₂Se

21. Which of the following alkaline earth metals is the strongest reducing agent?

Mg

Ca

Ba

Sr

22. Which of the following belongs to the halogen family?

Radium

Polonium

Astatine

Francium

23. All the elements of oxygen family are

Non-metals

Metalloids

Radioactive

Polymorphic

24. AlCl₃ flumes in moist air because

HCl is formed in moist air

It is covalent

It is very volatile

It is highly hygroscopic

25. Fluorine is a better oxidizing agent than Br₂. It is due to

Non-metallic nature of fluorine

More electro negativity of fluorine

Small size of fluorine

More electron repulsion in fluorine

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26. All halogen are

Drying agents

Oxidizing agents

Reducing agents

Oxidizing as well as reducing agents

27. Polyanion formation is maximum in

Boron

Sulphur

Nitrogen

Oxygen

28. On heating sodium metal in a current of dry ammonia, the compound formed is

Sodium amide

Sodium hydride

Sodium azide

Sodium nitride

29. Which of the following isoelectronic ions has the lowest ionization energy?

S²¯

K⁺

Ca²⁺

Cl¯

30. Which of the following has highest dipole moment?

PH₃

NH₃

AsH₃

SbH₃

31. HNO₂ acts as an/a

Reducing agent

Acid

Oxidizing agent

All the three

32. Nitrolim is

Ca(CN)₂ + C

CaC₂ + C

CaCN₂ + C

All

33. Point out the correct equation which represents the strong action of heat on calcium nitrate.

A

C

D

B

34. Which of the following metal is present in chlorophyll?

Cobalt

Magnesium

Iron

Chromium

35. Mark the correct statement

Iodine is a solid

Br is more reactive than Cl₂

Cl₂ is more insoluble in water

None of these

36. Which one of them is monoatomic?

Fluorine

Nitrogen

Neon

Oxygen

37. Which one has least dissociation energy?

HCL

HBr

HF

HI

38. NaoH is named as caustic soda because

It corrodes the organic tissues

It is used in soda water

It reacts with chlorine gas

It reacts with fats to form soap

39. Which of the following statements is not correct for a noble gas?

Half-life of Rn is only 3-8 days

Ne is obtained during radioactive disintegration

Ar is used in electric bulbs

HE is used in producing very low temperatures

40. Which of the following is not isoelectronic?

Na⁺

Cl¯

O²¯

Mg²⁺

41. Which of the following phosphorus is most reactive?

White phosphorus

Red phosphorus

Scarlet phosphorus

Violet phosphorus

42. Which of the following hydrogen halide is the weakest acid in solution?

HI

HF

HBr

HCl

43. Freon-12 is used as a

Refrigerant

Insecticide

Fungicide

Herbicide

44. Which one of the halogen acid is a liquid?

HBr

HF

HCl

Hl

45. Beryllium is placed above magnesium in the second group. Beryllium dust, therefore, when added to MgCl₂ solution will

Have no effect

Precipitate Mg metal

Leads to the dissolution of beryllium metal

Precipitate Mg

46. Which is not correct reason about the oxidizing power of halogens depending on various factors?

High atomic number

Hydration energy

Energy dissociation

Electron affinity

47. Which reason best accounts for the use of helium in modern airships?

Expensive but easy to store in cylinder

Expense, but a very uncreative gas

Less dense then air and not flammable

Lighter than air and cheap to produce

48. Keeping in view the uses of sodium silicate, select the incorrect statement:

It is used in the formation white cement

It is as filter for soap

It is used as fire proof in textile

It is used furniture polish

49. Which one among the following form maximum number of compounds?

Kr

Xe

Rn

Ar

50. Variable valency is characteristic of

Noble gas

Transition elements

Halogen

Alkali metals

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51. Which is the strongest acid?

HClO₃

HClO₄

HClO₂

HClO

52. When sulphur is boiled with Na₂SO₃ solution, the compound formed is

Sodiums sulphates

Sodium persulphate

Sodium sulphides

Sodium thiosulphate

53. According to the Periodic Law of elements, the variation in properties of elements is related to their

Nuclear masses

Nuclear neutron-proton number rations

Atomic numbers

Atomic masses

54. The halogen which has only one oxidation state is

Br

I

Cl

F

55. Lithium is strongest reducing agent among alkali metals due to which of the following factor?

Lattice energy

Electron affinity

Ionization energy

Hydration energy

56. O²¯ has high ionic radius because the ionic radius of anion is greater than individual element. Which of the following oxides is amophteric in character?

CO₂

SiO₂

CaO

SnO₂

57. Strongest reducing agent is

HCl

Hl

HF

HBr

58. Which element has strongest attraction for its valence electrons?

F

Br

Cl

I

59. Which of the following species has maximum number of unpaired electrons?

O₂+

None of these

O₂

O₂-

60. Hydrochloric acid at 25°C is

Ionic and gas

Covalent and liquid

Ionic and liquid

None of these

61. The elements with atomic numbers 9, 17, 35, 53, 85 and all

Light metals

Noble gases

Halogens

Heavy metals

62. Helium-oxygen mixture is used by deep sea divers in preference to nitrogen-oxygen mixture because

Nitrogen is much less soluble in blood than helium

Helium is much less soluble in blood than nitrogen

Nitrogen is highly soluble in water

Under the sea nitrogen and oxygen react to give poisonous nitric oxide

63. Limestone is not used in which of the following manufacturing processes?

Solvay process of sodium carbonate

Phosphorus from phosphorite

Ordinary (soda lime) glass

Iron from haematite

64. Eka-aluminum and Eka-silicon are known as

Gallium and Germanium

Proton and silicon

Aluminum and silicon

Iron and sulphur

65. How does the ionization energy of 1st group elements vary?

Increases down the group

Remains unchanged

Variation is not regular

Decreases down the group

66. Which of the following substance is used for drying gases?

Calcium oxide

Calcium carbonate

Sodium carbonate

Sodium bicarbonate

67. Pyrex glass is a mixture of

Sodium borosilicate and aluminum borosilicate

Sodium silicate and lead silicate

Sodium silicate and calcium silicate

Sodium silicate and aluminum borosilicate

68. Action of caustic soda on aluminum hydroxide gives a compound having formula

Na₂Al(OH)₄

Al₂(OH)₄

Na₃AlO₃

NaAlO₂

69. Calcium is obtained by

Electrolysis of solution of calcium chloride in water

Reduction of calcium chloride with carbon

Electrolysis of molten anhydrous or fused calcium chloride

Roasting lime stone

70. 6NaOH + Cl₂ → 5Nacl + Naclo₃ in this reaction chlorine is

Oxidized

Reduced

No change

Both oxidized and reduced

71. Which one is the weakest oxyacid of chlorine?

HCIO₂

HCIO₃

HCIO₄

HCIO

72. Solution of sodium metal in liquid ammonia in strongly reducing due to the presence in the solution of the following

Sodium amide

Sodium atoms

Solvated electrons

Sodium hydride

73. A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of

Sodium hydride

Sodium atoms

Solvated electrons

Sodium amide

74. The structure of XeF₆

Tetrahedral

Pyramidal

Distorted octahedral

None of these

75. Mark the element which shows only one oxidation state is its compounds

F

Cl

Br

I

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76. Sulphuric acid has great affinity for water because

It hydrolyses the acid

Acid forms hydrates with water

It decomposes the acid

Acid decomposes water

77. Bromine can be liberated from KBr solution by the action of

NaCl

Ki

Iodine solution

Chlorine

78. Aluminum is most abundant in earth’s crust, yet it is obtained from bauxite because

Of easy extraction of Al from it

Bauxite is available in large quantity

Bauxite is less impure

Bauxite contains maximum of Al

79. B, Al, Ga, In and Tl belong IV group of the period table show a decrease with increasing relative atomic mass:

The first ionization energy

The stability of +2 oxidation state

Ionic character of the compound

The basic character of the oxides

80. In the Hoop’s process for refining of Al the fused materials form three different layers and they remain separated during electrolysis also. This is because

Three layers are maintained at different temperatures

Three layers have different densities

There is special arrangement is cell to keep the layers separate

The upper layer is kept attracted by cathode and lower layer is kept attracted by anode

81. The noble gas He was discovered by

Frank land and Lockyer

Rutherford

Dorn

Chadwick

82. Who reported first noble gas?

Frank land

J.J Thomson

Ramsay

Cavendish

83. The metal extracted by electrolysis of its fused salt is

Sodium

Copper

Lead

Iron

84. Alkali metals are generally extracted by

Electrolytic methods

Displacement methods

Double decomposition methods

Reduction methods

85. Which of the noble gas has highest polarizabilities?

Ar

Kr

Xe

He

86. Which of the following is acidic?

SO₃

N₂O

HgO

BeO

87. Several blocks of magnesium are fixed to the bottom of a ship to

To prevent the action of water and salt

Mark the ship lighter

Keep away the sharks

Prevent puncturing by under sea rock

88. The element that does not form a monoxide is

Silicon

Tin

Lead

Germanium

89. What causes nitrogen to be chemically inert?

Short internuclear distance

High bond energy

Multiple bond formation in the molecule

Absence of bond polarity

90. The most acidic of the following compounds is

B₂O₃

P₂O₃

Sb₂O₃

As₂O₃

91. Which one of the elements reacts directly with nitrogen to form nitride?

Rb

Li

K

Ba

92. Which of the following noble gas is not present in atmosphere?

Ne

Ar

He

Rn

93. In the modern long form of the periodic table, elements are arranged in the increasing order of

Isotopic number

Atomic number

Mass number

Atomic mass

94. Halogens exist in the form of

Monoatomic molecules

Cannot be predicted

Diatomic molecules

Various forms

95. The process associated with sodium carbonate manufacture is known as

Haber

Chamber

Castner

Solvay

96. If one liter of air is passed repeatedly over heated copper and magnesium till no further reduction in volume takes place, the volume finally obtained would be approximately

Zero

10mL

200mL

800 mL

97. When K₂O is added to water, the solution is basic because it contains a significant concentration of

K⁺

OH¯

O₂¯²

O³¯

98. The compounds of alkaline earth metals have the following magnetic nature

Paramagnetic

Ferromagnetic

Antiferromagnetic

Diamagnetic

99. Fluorine does not show positive oxidation states due to the absence of

None

s-orbitals

p-orbitals

d-orbitals

100. Which of the following statements is incorrect?

Sodium is the not most abundant metal in earth’s crust

Ionic character of alkali metal halides decreases down the group

Melting and boiling points of alkali metals decrease down the group

Sodium is the most abundant metallic element in sea water

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101. The following has zero valency

Al

Na

Kr

Be

102. The acid which has a peroxy linkage is

Pyrosulphuric acid

Carlo’s acid

Dithionic acid

Sulphurous acid

103. Which of the following halogens does not form its oxy acids?

Iodine

Chlorine

Bromine

Fluorine

104. In curing cement plasters, water is sprinkled from time to time. This helps is

Hydrating sand and gravel mixed with cement

Converting sand into silici acid

Developing interlocking needle like crystals of hydrated silicates

Keeping it cool

105. The name of CaSO₄. ½ H₂O is

Epsom salt

Gypsum

Dolomite

Plaster of Paris

106. The noble gases are

All of these

Polyatomic

Diatomic

Monoatomic

107. Which of the following compounds of cement sets at the slowest rate?

Tri-calcium silicate

Tetra calcium aluminoferrite

Tri-calcium aluminate

Diclacium silicate

108. The difference of water molecules in gypsum and plaster of Paris is

2

½

5/2

1½

109. Which of the following is the lifesaving mixture for an asthma patient?

Mixture of argon and oxygen

Mixture of xenon and nitrogen

Mixture of helium and oxygen

Mixture of neon and oxygen

110. Which among the following species has the highest ionization energy?

Li

Ne

F

B

111. The atomic numbers of four elements are given below. Which one is an alkaline earth metal?

20

30

10

40

112. Aqueous NaCl solution is electrolyzed using platinum electrodes. What is the product formed at cathode?

Cl₂

Na

O₂

H₂

113. Match List I with List II and select the answer using the codes given below:

Code	List I	Code	List II
a	XeF₄	1	Distorted octahedral
b	XeF₆	2	Tetrahedral
c	XeO₃	3	Square planar
d	XeO₄	4	Trigonal pyramidal

a-1, b-4, c-2, d-3

a-2, b-3, c-1, d-4

a-4, b-1, c-3, d-2

a-3, b-1, c-4, d-2

114. Which of the following is most volatile?

HI

HF

HCl

HBr

115. Mark the incorrect statement about ‘Li’

‘Li’ combine with nitrogen directly to form Lithium nitride

‘Li’ has a great tendency to form hydrates

‘Li’ is not effected by air

When burn in oxygen, ‘Li’ forms super oxide LiO₂

116. Mark the incorrect statement about the conductance semi-conductors in photoelectric cells and solar batteries. Semi conductors show

Decrease in resistance with increase in temperature

Different resistance under different circumstance

Decease in resistance with intensity of light

Increase in resistance with increase in temperature

117. Which of the following has the highest melting point?

Nal

NaCl

NaBr

NaF

118. Alkaline earth metals comes under

Representative elements

Inner transition elements

Transition elements

Halogens

119. The correct formula of Plaster of Paris is

CaSO₄

CaSO₄. 3H₂O

CaSO₄.2H₂O

CaSO₄. 1/2H₂O

120. The solubilities of carbonates decrease down the magnesium group due to a decrease in

Entropy of solution formation

Inter ionic attraction

Lattice energies if solids

Hydration energies of cations

121. To a clear solution of compound (X) a solution of BaCl₂ is added and a heavy white precipitate is formed which does not dissolve in dilute HCl. The compound X is

A carbonate

A nitrate

A sulphate

A bromide

122. Which of the following ion has the highest value of ionic radius?

Li⁺

B³⁺

O²¯

F¯

123. Fluorides of Ca, Mg, Ba and Sr are

Highly soluble in water

Insoluble in water

Less soluble in water

Variable trend

124. The last member of the family of inert gases is

Argon

Xenon

Neon

Radon

125. Which of the following does not exhibit the periodicity in properties of the elements?

N/P ratio

Atomic radius

Ionization energy

Electro negativity

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126. Identify the incorrect statement with respect to ozone.

Ozone protects the earth’s inhabitants by absorbing gamma-radiations

Ozone is diamagnetic whereas dioxygen is paramagnetic

Ozone is formed in the upper atmosphere by a photochemical reaction involving dioxygen

Ozone is more reactive than dioxygen

127. Reactivity of borazole is greter than that of benzene because

Borazole is nonpolar compound

Borazole is electron deficient compound

Borazole is polar compound

Of localized electrons in it

128. Which element react directly with Kr, Xe and Rn?

O

F

U

Br

129. The melting point in lowest for

Mg

Ca

Be

Sr

130. A metal is burnt in air and the ash on moistening smells of ammonia. The metal is

Al

Fe

Mg

Na

131. Which halogen have most corrosive action on skin?

Br₂

I₂

Chlorine

F₂

132. Identify the correct statement

Plaster of Paris is obtained by partial oxidation of gypsum

Plaster of Pairs can be obtained by partial oxidation of gypsum

Gypsum is obtained by heating plaster of pairs

Gypsum contains a lower percentage of calcium than plaster of pairs

133. Elements of which of the following groups will from anions most readily?

Oxygen family

Halogens

Nitrogen family

Alkali metals

134. The lowest boiling point of helium is due to its

Inertness

Gaseous nature

High polarisability

Weak van der Waals forces between atoms

135. Permonosulphuric acid is known as

Sulphuric acid

None of these

Carlo’s acid

Marshall’s acid

136. Which of the following will liberate hydrogen by its reaction with hydrochloric acid?

Magnesium

Copper

Phosphorus

Mercury

137. A clathrate may be defined as a

Cage compound

Liquid crystal

Mixture

Solid solution

138. When a colourless gas is passed through bromine water only decolourisation takes place the gas is

HCl

SO₂

H₂S

HBR

139. Which is the symbol of element whose atoms have the outermost configuration 2S²2P³ is

P

C

N

Li

140. Which one of these is most reactive?

Na

Pb

Mg

K

141. Which gas can support combustion?

N₂O

CO₂

CO

N₂

142. The percentage of lead in lead pencil is

70

80

20

Zero

143. Which one of the following allotropic forms of carbon is isomorphous with crystalline silicon?

Coal

Diamond

Coke

Graphite

144. Which one of the following substances is used in the laboratory for a fast drying of neutral gases?

Phosphorus pentoxidse

Active charcoal

Anhydrous calcium chloride

Na₃PO₄

145. What is more true about alkali metals?

Hydrolyzing agents

Both oxidizing and reducing agents

Oxidizing agents

Reducing agents

146. The noble gases consist of

Atoms linked by weak bonds

Triatomic molecules

Diatomic molecules

Single free atoms

147. Bromine is obtained on a commercial scale from

Common salt

Carnallite

Caliche

Cryolite

148. Inert pair effect plays an important role in case of

Tl

F

Si

Al

149. Sodium chloride when heated with conc. H₂SO₄ and solid potassium dichromate gives

Chromic chloride

Chromous chloride

Chromyl chloride

None

150. Vander Waals forces are stronger in

Br₂

F₂

I₂

Cl₂

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151. Identify the correct statement

Elemental Na is easily oxidized

Element sodium can be prepared and isolated by electrolyzed an aqueous solution of NaCl.

Elemental Na is insoluble in NH₃

Elemental Na is a strong oxidizing agent

152. Which element forms an ion with charge +3?

Al

Be

C

Si

153. Which halogen has application in medicines mostly?

None

Br2

Cl₂

I₂

154. Electropositive character increase down the group due to

Increase in atomic size of elements

Decrease in I.P

Decrease in electronegativity of the elements

All of these

155. Which of the following has greatest reducing power?

HBr

HI

HCl

HI

156. Which member of the halogen family (X₂) does not show positive oxidation sate (X⁺₂)?

Bromine

Chlorine

Fluorine

Iodine

157. Which statement is true about IV A group

There is a regular gradation of properties from top to bottom

Whole group consist of non-metals

Abrupt change of properties

Marked change of properties

158. Deliquescence is a process in which a solid

Absorbs moisture and turn into liquid

Loses water of crystallization

Absorbs moisture and remain solid

Increases the water of crystallization

159. Choose a set which has both member from the same periods of periodic table

Na, Ca

Na, Cl

Ca, Cl

Cl, Br

160. The oxidizing power of halogens depends upon various factors. Which are not the correct reasons?

High atomic number

Electron affinity

Hydration energy of ion

Energy dissociation

161. In the electrolytic extraction of aluminum fused cryolite is added

To make a conducting solution of bauxite

To increase Al production

To protect the anodes

To act as reducing agent

162. The metal with highest electrical resistance at room temperature is

Fe

Te

Pb

Po

163. Choose the non metallic element whose molecules contain maximum number of its atoms

P

Si

O

As

164. The properties of lithium are similar to those of Mg this is because

The ratio of their charge to size is nearly the same

Both have similar electronic configurations

Both are found together in nature

Both have nearly the same size

165. Which statement is correct?

None of these

Noble gases are all dense gases

Noble gases will all burn in pure oxygen

Noble gases have low m.p and b.p.

166. Which of the following has highest first ionization potential?

Carbon

Nitrogen

Boron

Oxygen

167. A Major constituent of Portland cement (except lime) is

Iron oxide

Silica

Magnesia

Alumina

168. The last orbit of argon would have electrons

8

6

18

2

169. Presence of which of the following salt increases the rate of setting of plaster of Paris.

CuSO₄

KCl

BaSO₄

NaCl

170. Select the gas which is used in electrical discharge lights

Oxygen

Helium

Nitrogen

Neon

171. NaOH is prepared by the method

Solvay process

Castner cell

Castner Kellner cell

Down’s cell

172. On heating quick lime with coke in an electric furnace, we get

CaC₂

CaCO₃

CaO

Ca and CO₂

173. In the fractional distillation of liquid air, the gas that boils off last is

H₂

He

Ar

O₂

174. Among the alkaline earth metals the element forming predominantly covalent compound is

Barium

Calcium

Strontium

Beryllium

175. XeF₄ on partial hydrolysis produces

XeOF₄

XeF₂

XeOF₂

XeO₃

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176. Among noble gases xenon gives compounds due to

Large size

Zero electron affinity

Higher I-P

Structure

177. In view of their low ionization energies, the alkali metals are

Strong oxidizing agents

Weak reducing agents

Strong reducing agents

Weak oxidizing agents

178. Select the weakest acid among the following

HF

HBr

HI

HCl

179. Sea weeds are important source of

Bromine

Iodine

Iron

Chlorine

180. In the manufacture of bromine form sea water, the mother liquor containing bromides is treated with

Sulphur dioxide

Carbon dioxide

Chlorine

Iodide

181. Which one boric acid is stable one?

None of these

H₂B₄O₇

H₃BO₃

HBO₃

182. Alkaline earth metals show standard electrode potential values which are very similar to their alkali metals due to

High lattice energy of M²⁺ ions in the solid state

None of these of M²⁺ ions

High energies of hydration of M²⁺ in solution

Diamagnetic nature

183. Electron affinity depends on

Nuclear charge

Atomic size and nuclear charge both

Atomic number

Atomic size

184. Keeping in view the uses of Al, mark the incorrect statement. Al is used

For preparing artificial

As an abrasive in the form of abundum

In form of foil for wrapping

As an oxidizer in metallurgy

185. Which of the following is most electronegative?

Tin

Lead

Carbon

Silicon

186. The atoms with high values of first ionization potential values always have

Strongly bond valence electrons

Large atomic size

Small ionic size

Metallic properties

187. Which is the most volatile compound?

HCl

HBr

HI

HF

188. Heavy water is obtained by

Dissolving heavy salt in water

Removing impurities of calcium and magnesium form water

Simple distillation of water

Prolonged electrolysis of water

189. Which of the following is an electron management of a noble gas?

2,8,18,2

2,8,2

2,8,7

2,8

190. Bleaching powder loses its power on keeping for a long time because

It absorbs moisture

It changes into calcium chloride and calcium chlorate

It change into calcium hypochlorate

It changes into CaCl₂ and Ca(OH)₂

191. The spectrum of helium is expected to be similar to that of

Li⁺

He⁺

H

Na

192. The metal that dissolves in liquid ammonia, giving a dark blue coloured solution is

Lead

Zinc

Silver

Sodium

193. The increase of Van der Waal’s forces in halogens is in the order of

F₂ > Cl₂ > Br₂ > I₂

I₂ > Br₂ > Cl₂ > F₂

Cl₂ > Br₂ > I₂ > F₂

Br₂ > Cl₂ > F₂ > I₂

194. The halogen that is most easily reduced is

Br₂

Cl₂

F₂

I₂

195. Which one of the following reactions is not associated with the Solvay process of manufacture of sodium carbonate?

CO₃ + H₂O → H₂CO₃

2NaOH + CO₂ → Na₂CO₃ + H₂O

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

NH₃ + H₂CO₃ → NH₄HCO₃

196. Indicate the correct statement

Na cl on electrolyzing give sodium the anode and cl at cathode

Alkali metal atom has the smallest size in its period

Alkali metals have ns’ configuring in outermost shells

Alkali metals do not reacts with metals

197. The variety of glass used in making lenses and prisms of

Crooke’s glass

Borosilicate glass

Flint glass

Soda glass

198. One which is not dissolved by dilute hydrochloric acid is

MnS

ZnS

BaSO₄

BaCO₃

199. Hypo is used in photography for

Developing picture

The fixation of picture

Picture printed

The colour of picture

200. Which statement is correct about halogens?

They are all diatomic and form univalent ions

They can mutually displace each other from the solution of their compounds with metals

They are all diatomic and form divalent ions

They are all capable of exhibiting several oxidation states

Page 9 of 14

201. I₂ is solid at room temperature because

Its molecule has a large size

It is highly electronegative

It possess hydrogen bonding

It has metallic bond

202. Which noble gas is used in infilament bulbs to stop the filament burning out too quickly?

Argon

Neon

Krypton

Helium

203. Which of the following species has the highest ionization potential?

Mg⁺

Ne

Li⁺

Al⁺

204. Which of the following fluorides of xenon is impossible?

XeF₆

XeF₄

XeF₃

XeF₂

205. Which one halogen is radioactive?

Astatine

Iodine

Chlorine

Bromine

206. A 500 g toothpaste sample has 0.2 g fluoride concentration. What is the concentration of F¯ ions in terms of ppm level?

400

200

250

1000

207. Among HCL, HBr and Hl, Hi shows highest B.P due to

Strongest vanderwaal’s force

H. bonding

None of these

Dipole-dipole forces

208. The shape of gaseous SnCl₂ is

Tetrahedral

Linear

Angular

t-shaped

209. Which halogen acid is a liquid no room temperature?

HF

HU

HBr

HI

210. Which one of the following elements belongs to halogen family?

Radium

Astatine

Polonium

Francium

211. Which halogen is most electropositive?

Cl

I

F

Br

212. Which is true about the electro negativity order of the following?

P > Si

Sr > Ca

Br > Cl

C > N

213. An aqueous solution of sodium carbonate is alkaline because sodium carbonate is a salt of

Strong acid and weak base

Strong acid and strong base

Weak acid and strong base

Weak acid and weak base

214. Two elements whose electro negativities are 1.2 and 3.0, the bond formed between them would be

Covalent

Metallic

Ionic

Coordinate

215. Which of the halogen has highest electronegativity?

Chlorine

Iodine

Fluorine

Bromine

216. In which form boron exist mostly in nature

Nitrides

Oxides

Sulphides

Oxyborates

217. Which of the following oxides is peroxide?

Na₂O₂

SO₂

BaO

Mn₂O

218. Which of the following is correct?

Magnesium reacts with cold water and liberates hydrogen

Sodium reduces CO₂ to carbon

In the Castner process of sodium extraction, NaCl is used as an electrolyte

Magnallium is one alloy of Mg and zinc

219. Chlorine acts as a bleaching agent only in the presence of

Dry air

None of these

Moisture

Sun light

220. The solubility of carbonates decrease down the Mg group due to decrease in

Entropy of solution formation

Hydration energies of cations

Inter – ionic attraction

Lattice energy solids

221. The number of electrons that are paired in oxygen molecule are

14

16

12

7

222. Mark the smallest atom

Cl

F

Br

I

223. Electron affinity of sulphur is

Equal to O and Se

Less than O but more than SE

More than O but less than Se

More than O and Se

224. Dilute hydrochloric acid solution cannot be concentrated by boiling beyond

22%

33%

44%

11%

225. Molten sodium chloride conducts electricity due to the presence of

Atoms of sodium and chlorine

Free electrons

Free molecules

Free ions

Page 10 of 14

226. The atomic radius increases as we move down a group because

Atomic number increases

Effective nuclear charge increases

Additive electrons are accommodated in new electron level

Atomic mass increases

227. Among noble gases (from He to Xe) only xenon reacts with fluorine to form stable xenon fluorides because xenon

Has the lowest ionization enthalpy

Has the highest heat of vaporization

In the most readily available gas

Has the largest size

228. Which of the following element has the maximum electron affinity?

S

I

F

Cl

229. Fluorine differs from other halogens due to its small size and restriction of its valence shell to an octet. Mark the correct behavior of fluorine

It is more reactive than other halogens

It has highest electronegativity

It has highest first ionization energy

It restricts to oxidation state – 1 only

230. Which noble gas is used in labors?

Helium

Neon

Krypton

Argon

231. Number of elements present in 5th period is

24

18

8

32

232. Gradual addition of electronic shells in the noble gases causes a decrease in their

Density

Boiling point

Ionization energy

Atomic radius

233. Bleaching powder reacts with a few drops of conc. HCl to give

Oxygen

Hypochlorous acid

Chlorine

Calcium oxide

234. Which one of the following properties of alkali metals increases in magnitude as the atomic number rises?

Ionic radius

First ionization energy

Electro negativity

Melting point

235. Which noble gas is used earth quake prediction?

Ar

Rn

He

Kr

236. Among the halogens the rare element is

Iodine

Chlorine

Fluorine

Astatine

237. Sometimes a yellow turbidity appears while passing H₂S gas even in the absence of II group radicals. This is because

IV group radicals are precipitated as sulphides

Of the oxidation of H₂S gas by some acid radicals

III group radicals are precipitated as hydroxides

Sulphur is present in the mixture as impurity

238. Which molecule has a coordinate covalent bond in its structure?

CO

Al₂O₃

NH₃

CO₂

239. Fluorine is a stronger oxidizing agent than chlorine in aqueous solution. This is attributed to many factors except.

Heat of dissociation

Electron affinity

Heat of hydration

Ionization potential

240. Which of the following halogens dose not form oxy acid?

Iodine

Chlorine

Fluorine

Bromine

241. Which is the gas among the following that reacts with H₂ is darkness?

I₂

Cl₂

Br₂

F₂

242. An atom with high electro negativity has

Low ionization potential

High ionization potential

Low electron affinity

Large size

243. Epsom salt is the hydrate of one of the following

Ferrous ammonium sulphate

Magnesium ammonium phosphate

Calcium sulphates

Magnesium sulphates

244. Common oxidation state of boron are

-3

+3

+1

+3,-3

245. XeF₄ involves which hybridization

Sp²

Sp

Sp²d

Sp³d²

246. Sea divers go deep in the sea water with a mixture of which of the following gases?

CO₂ and Ar

O₂ and Ar

O₂ and CO₂

O₂ and He

247. The correct order of electron affinity among the following is

Cl > F > Br

F > Br > Cl

Br > Cl > F

F > Cl > Br

248. In Solvay ammonia process, sodium bicarbonate is precipitated due to

Reaction with CO₂

Reaction with NaOH

Presence of NH₃

Reaction with brine solution

249. For two ionic solids CaO and Kl, identify the wrong statement among the following?

Kl is soluble in benzene

Kl has high m.p.

Lattice energy of CaO is much higher than that of Kl

CaO has high m.p.

250. In certain respects, lithium differs from other alkali metals. The main reason for this is

Extremely high electropositivity of Li

Small size of lithium atom and Li⁺ ion

Greater hardness of Li

Hydration of Li⁺ ion

Page 11 of 14

251. Which of the following statement about fluorine is not correct?

Bond energy of fluorine is less than that of chlorine

Fluorine does not form oxoacid

Electron affinity of chlorine is greater than that of fluorine

Fluorine cannot be prepared by electrolysis of fused metal fluorides

252. Mark the element which shows greatness inert pair effect

Bromine

Fluorine

Iodine

Chlorine

253. Which of the following halogen does not exhibit positive oxidation state in its compounds?

F

I

Br

Cl

254. White enamel of our teeth is

Ca₃(PO₄)₂

CaBr₂

CaCl₂

CaF₂

255. Which one halogen can show only-1 oxidation state?

F

Br

I

Cl

256. The halogen which reacts spontaneously with Au(s) to produce Au³⁺ is:

F₂

I₂

Cl₂

Br₂

257. The important ore of lead is

Galena

Bauxite

Chalcopyrites

Haematite

258. Phosphide ion has the electronic structure similar to that of

Nitride ion

Chloride ion

Fluoride ion

Sodium ion

259. Among the fluorides listed below the one which does not exist?

SF₄

CF₄

XeF₄

HeF₄

260. Which of the halogen can displace other three elements?

Fluorine

Iodine

Chlorine

Bromine

261. The element with highest electron affinity among the halogen is

F

Br

I

Cl

262. Boron compounds behave as Lewis acid because of their

Electron deficiency

Covalent nature

Acidic nature

Ionization property

263. Cassiterite is an ore of

Mn

Sb

Ni

Sn

264. The most stable +2 oxidation state is exhibited by

S

Fe

Si

Pb

265. Plaster of Paris is used

As a plaster for walls

In dentistry and surgery

In metallurgical process

As a drying agent

266. When one mole of bleaching powder is completely decomposed, then the mass of chlorine gas that is liberated will be

35.45 g

70.90 g

17.72 g

88.60 g

267. The noble gas forming the maximum number of compounds

Ne

Ar

Xe

He

268. LiF is insoluble in water, while NaF and KF are soluble. This is due to

High ∆H lattice

Low ∆H lattice

High covalent nature

Small ionic size of Li⁺

269. Gradual addition of electronic shells in the noble gases causes a decrease in their

Boiling point

Density

Atomic radius

Ionization energy

270. The electronic configuration of metal M is 1s², 2s², 2p⁶, 3s¹. The formula of its oxide would be

M₂O

MO₂

MO

M₂O₃

271. Electrolysis of fused anhydrous KCl.MgCl₂.6H₂O gives

Potassium only

Magnesium and chlorine

Magnesium only

Potassium and magnesium

272. Which of the following is most electronegative?

Sn

C

Si

Pb

273. The density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepared by a chemical reaction form a compound of nitrogen due to the presence of the following in aerial nitrogen.

CO₂

Argon

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Some nitrogen molecules analogous to O₂

274. Which one of the following properties is not correct for ozone?

It oxidizes lead sulphides

It oxidizes mercury

It oxidizes potassium iodide

It cannot act as a bleaching agent

275. The substance not likely to contain CaCO₃ is

Sea shells

Dolomite

Calcried gypsum

A marble states

Page 12 of 14

276. The one which does not show variable valency is

Titanium

Lead

Barium

Copper

277. Which of the following is a man made element?

Fr

Ra

Lr

Rn

278. Which of the following is true for magnesium?

It is more electropositive than sodium

It is a strong reducing agent

It is manufactured by electrolysis of aqueous magnesium chloride

It resembles, in chemical properties, with its diagonally placed element Boron in III group of the Periodic Table

279. When ammonia is heated with cupric oxide, a molecule of ammonia will

Gain 2 electrons

Gain 3 electrons

Lose 3 electrons

Lose 2 electrons

280. Fluorine differs from other halogens due to

All

Small size

Low first ionization energy

High dissociation energy

281. The correct order of electron affinity of B, C, N, O is

O > B > C > N

B > N > C > O

O > C > N > B

O > C > B > N

282. The alkali metals

Show decreased chemical reactivity with dry oxygen in going form Li to Cs

Form salt like hydrides

Form salts which are predominantly covalent

Show increasing electro negativity from Li to Cs.

283. Sodium sulphates is solute in water but barium sulphates is insoluble because

Both a and b

The hydration energy of Na₂SO₄ is more than its lattice energy

The lattice energy of BaSO₄ is more than its hydration energy

The lattice energy has no role to play in solubility

284. Alkali metals displace hydrogen from water forming bases due to the reason that

They are far above the hydrogen in electrochemical series based on oxidation potential

They contain only one electron in their outermost shell

Their ionization potential is less than that of other elements

They are far below the hydrogen in electrochemical series based on oxidation potential

285. Which of the following on heating at 125°C gives plaster of Paris?

Calomel

Borax

Alum

Gypsum

286. The halogen having highest electron affinity is

Iodine

Fluorine

Bromine

Chlorine

287. Sulphuric acid reacts with PCl₅ to give

Sulphuryl chloride

Sulphur monochloride

Sulphur tetrachloride

Thionyl chloride

288. Which one is hygroscopic in nature?

HBr

HNO3

HCL

HUO4

289. Which of the following sets of atomic numbers belong to that of the alkali metals?

37, 19, 3, 55

1, 12, 30, 4, 62

12, 20, 56, 88

9, 17, 35, 53

290. In which of the following groups, when he is placed, its all properties are satisfied?

None of these

With halogens

With alkali metals

With inert gases

291. Which one of the following has highest electropositive character?

Cr

Cs

Ba

Cu

292. Which gives green colour in fireworks?

Sodium

Barium

Potassium

Calcium

293. Which is true for an element R present in group 13 of the periodic table?

It forms RX₂

It is a gas at room temperature

It forms R₂O₃

It has oxidation state of +4

294. Which one has highest electron affinity?

Cl

F

Br

I

295. Calico printing means

Paper printing

Cloth printing

Glass printing

Leather printing

296. Point out the property which is not characteristic of alkali metals

High ionization energy

Low electronegativity

Low melting point

Their ions are isoelectronic with noble gases

297. Which of the following has the least ionization potential?

Li

Zn

He

N

298. The strongest reducing agent out of Na, K, Rb And Cs is

K

Na

Cs

Rb

299. Cl₂O₇ is best prepared by passing by

Chlorine gas over hot HgO

Hydrogen chloride over phosphorus pentoxide

Chlorine and oxygen over hot silver chlorate

Perchloric acid (CHIO₄) over hot silver oxide

300. When NaOH is made, the gas released at the cathode is

H₂

O₂

Cl₂

H₂O

Page 13 of 14

301. Neon glows in discharge tube as

Radish

Greenish

Yellowish

Bluish

302. Mark the correct statement

Li₂CO₃ is soluble in water

Carbonates of Ca, Ba, Sr are soluble in water

Basic carbonates of Mg and Cu are soluble in water

Carbonates of Na, K, NH₄ are soluble in water

303. Which of the following statements is incorrect about halogens?

All are non-metals

All the halogens react with noble gases to form their halides

They have high electron affinity and ionization energy

All the halogens have electronic configuration ns2P5

304. Carbonates of li are less stable than that of Na due to

Low charge density

Low electronegativity

Lower electro positivity

None

305. Choose the correct statement about heat of vapourization of noble gases

It decreases gradually down the group

None of these

Noble gases have o heat of vapourization

It increases gradually down the group

306. The metal used in the thermite process because of its activity is

Aluminum

Zinc

Iron

Copper

307. The oxide of which of the following elements will be acidic in character

Rb

Li

Mg

Cl

308. The type of hybridization of born in diborane is

Sp³d²-hybridisation

Sp-hybridisation

Sp³- hybridization

Sp²-hybridisation

309. Which is valence shell configuration of halogens?

ns₂, nP₅

nS₂, nP₃

nS₂, nP₆

NS₂, nP₄

310. Compared with the alkaline earth metals, the alkali metals exhibit

Greater hardness

Lower ionization energies

Smaller ionic radii

Highest boiling points

311. The correct sequence of elements in the decreasing order of first ionization energy is

Na > Mg > Al > Si

Mg > Na > Al > Si

Si > Mg > Al > Na

Al > Mg > Na > Si

312. The first ionization energies of alkaline earth metals are higher than those of the alkali metals. This is because

There is decrease in the nuclear charge of the alkaline earth metals

There is increase in the nuclear charge of the alkaline earth metals

None of these

There is no change in the nuclear charge

313. Mark the nitrate which decomposes differently on heating

RbNO₃

LiNO₃

KNO₃

NaNO₃

314. Orthophosphoric acid is

Dibasic

Tetrabasic

Tribasic

Monobasic

315. The ionization potential is lowest for the

Alkali metals

Inert gases

Alkaline earth metals

Halogens

316. Mark the compound which does not exist

NCl₅

AsF₅

SbCl₅

PF₅

317. All the following decompose easily on heating to give oxygen except

Manganese dioxide

Mercuric oxide

Lead nitrate

Potassium chlorate

318. Which one is the biggest ion?

Na⁺

Mg²⁺

Al³⁺

Ba²⁺

319. Which of the following is an inert gas?

N₂

O₂

H₂

Argon

320. The bleaching action of chlorine is due to

Reduction

Hydrogenation

Chlorination

Oxidation

321. The element which has a simple cubic lattice in solid state is

None of these

Te

Se

Po

322. The halogens exist as halides. Which is not common place whose they are found?

In the atmosphere

As salts in ponds

In sea

In lakes

323. What is the atomic number (Z) of the noble gas that reacts with fluorine?

10

18

2

54

324. Which one of the following is a correct set for SiO₂?

Linear, basic

Angular, disc

Linear acidic

Tetrahedral, acidic

325. P₂O₅ is heated with water to give

Phosphorous acid

Hypo phosphoric acid

Hypo phosphorous acid

Orthophosphoric acid

Page 14 of 14

326. Aluminum (III) chloride forms a dimer because

Al belongs to third group

Al has high ionization energy

Higher co-ordination can be achieved by Al

It cannot form a trimer

327. The colour of I₂ in CCI₄ is

Violet

Colourless

Radish brown

Bluish green

328. Oxygen shows oxidation states

-2, +2, +6

-2

+2, -2

+2, +4, +6

329. Hydrogen fluorine is a lipid unlike other hydrogen halides because

HF molecules form intermolecular H-bonds

Fluorine atom is smaller in size

HF is the weakest acid

Fluorine is highly reactive

330. Mg is an important component of which biomolecule occurring extensively in living world?

Haemoglobin

Chlorophyll

Florigen

ATP

Total Questions:	330
Time Allowed:	80 Minutes
Total Marks:	330
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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