Chemistry S-Block Elements Online Mcqs Test

Q: How can I prepare for Chemistry S-Block Elements Online Mcqs Test?

You can prepare for Chemistry S-Block Elements Online Mcqs Test by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. The principle constituent of pyrex glass is

Question 2

2. Which of the following alkali metal hydroxides is the strongest base?

Question 3

3. Which is most abundant alkaline metal in earth crust?

Question 4

4. Borax is a white crystalline solid and it is

Answer

More soluble in hot water

Answer

More soluble in cold water

Answer

Soluble only in organic solvents

Answer

Insoluble in water

Question 5

5. Calcium cyananmide on treatment with steam under pressure gives NH₃ and

Answer

Calcium oxide

Answer

Calcium bicarbonate

Answer

Calcium hydroxide

Answer

Calcium carbonate

Question 6

6. In diaphragm cell, hydrogen is discharged by

Question 7

7. The formula of calcium cyanamide is

Question 8

8. Setting of Plaster of Paris involves

Answer

Combination with atmospheric CO₂

Answer

Dehydration

Answer

Hydration to yield another hydrate

Answer

Oxidation with atmospheric oxygen

Question 9

9. The solubility of aluminum hydroxide in sodium hydroxide solution is due to formation of

Answer

Sodium aluminum hydride

Answer

Aluminum peroxide

Answer

Sodium aluminum hydroxide

Answer

Sodium meta aluminate

Question 10

10. The aqueous solution of potash alum is

Answer

None of these

Question 11

11. Setting of cement is an

Answer

Neither exothermic nor endothermic

Answer

Endothermic reaction

Answer

Exothermic reaction

Question 12

12. Boric acid (H₃BO₃) reacts with NaOH to give a salt.

Answer

Na₂HBO₃

Answer

Na₂B₄O₇

Answer

Na₃BO₃

Question 13

13. What is true about physical state of borax?

Answer

White amorphous solid

Answer

White crystalline sublime solid

Answer

White crystalline solid

Answer

None of these

Question 14

14. Main process for the manufacture of Na₃CO₃ is

Answer

Castner process

Answer

Down process

Answer

Solvay process

Answer

Nelson process

Question 15

15. Down’s cell is used to prepare

Answer

Sodium metal

Answer

Sodium bicarbonate

Answer

Sodium hydroxide

Answer

Sodium carbonate

Question 16

16. Which one of the following sulphate is not soluble in water?

Answer

Zinc sulphate

Answer

Sodium sulphate

Answer

Potassium sulphate

Answer

Barium sulphate

Question 17

17. Which one of the following gives white precipitate with aqueous BaCl₂?

Answer

Na₂co₃

Question 18

18. Cesium oxide will be

Answer

Very strongly basic

Answer

Weakly basic

Answer

Amphoteric

Question 19

19. Which of the following properties is not true for an alkali metal?

Answer

Low atomic volume

Answer

Low density

Answer

Low electro negativity

Answer

Low ionization energy

Question 20

20. AlCl₃ exist as dimmer because

Answer

Incomplete p-subshell

Answer

High charge in nucleus

Answer

Al has greater ionization potential

Answer

Al has larger radius

Question 21

21. CO2 is gas while SiO2 is solid at room temperature.

Answer

CO2 forms multiple bond while silicon does not form multiple bonds

Answer

Carbon is non-metal while silicon is semi-metal

Answer

CO2 is an independent molecule while SiO2 has network covalent structure

Answer

Silicon has all sigma bonds

Question 22

22. The elements which are very abundant I earth are

Question 23

23. Which of the following is a component of ruby?

Question 24

24. When excess of SnCl₂ is added to a solution of HgCl₂, a white precipitate turning to grey is obtained. This grey colour is due to the formation of

Answer

Hg₂Cl₂

Question 25

25. Sodium conducts electricity because

Answer

It has mobile electrons

Answer

It gives hydrogen with water

Answer

It is a soft alkali metal

Answer

It has only one electron in the outermost orbit

Question 26

26. What is true about solubility of orthoboric acid?

Answer

Highly soluble in water at all temperatures.

Answer

Readily soluble in cold water

Answer

Sparingly soluble in cold water at all temperatures

Answer

Sparingly soluble in cold water but readily soluble in hot water

Question 27

27. NaNO₃ decomposes on heating at high temperature to give

Question 28

28. Which element is present in excess in skeletal material?

Question 29

29. Chile Salt peter is

Answer

Na₂SO₄

Answer

Na₂S₂O₃

Question 30

30. White lead is

Answer

Acidic lead carbonate

Answer

Basic lead acetate

Answer

Basic lead hydroxide

Answer

Basic lead carbonate

Question 31

31. Which of the following is most dense?

Question 32

32. First ionization potential of alkaline earth metal is greater than alkali metals because

Answer

They have smaller size

Answer

They are more reactive

Answer

They have greater atomic size

Question 33

33. Which of the following is not a use of silicon?

Answer

Hydraulic brakes

Answer

Antifreeze

Answer

Water repellent

Answer

Lubricants

Question 34

34. Alum is not used

Answer

As a mordant is dyeing

Answer

In tanning of leather

Answer

As an insecticide

Answer

In purification of water

Question 35

35. Which one of the following has the lowest boiling point?

Question 36

36. Microcosmic salt is

Answer

HPO₄.4H₂O

Answer

Na(NH₄)HPO₄.4H₂O

Answer

Na(NH₄). H₂O

Answer

K(NH₄)HPO₃. 2H₂O

Question 37

37. The element having highest electronegativity among the following is

Question 38

38. The chloride of an element A gives a neutral solution in water. In the periodic table, the element A belongs to

Answer

Fifth group

Answer

Third group

Answer

First transition series

Answer

First group

Question 39

39. The most abundant element in III A group in earth crust is?

Question 40

40. Which one of the following substances conducts electricity by the movement of ions?

Answer

Molten NaCl

Question 41

41. The elements having highest melting point is

Question 42

42. Which of the following is different from the other three oxides?

Question 43

43. Alkali earth metals have two electrons outermost

Question 44

44. Aluminum can jam radar due to

Answer

It is not true

Answer

It is a good reflector of radiant energy

Answer

It is a conductor of electricity

Answer

It is a conductor of heat

Question 45

45. Choose the gas among the following which turns line water milky:

Question 46

46. The substance used as a smoke screen in warfare is

Question 47

47. Which of the following statements is not true about potash alum?

Answer

It is used in dyeing industry

Answer

Its empirical formula is KAl(SO₄). 12H₂O

Answer

On heating it melts in its water of crystallization

Answer

Its aqueous sol. Is basic in nature

Question 48

48. Amongst the metals Be, Mg, Ca and Sr of group 2 of the periodic table, the least ionic chloride would be formed by

Question 49

49. One of the following does not form oxide on heating

Answer

Na₂ CO₃

Question 50

50. The element having least value of heat of hydration is

Question 51

51. Mica and bauxite are ores of

Question 52

52. Choose the correct statement

Answer

Diamond is the hardest and graphite is the softest

Answer

Graphite is the hardest which lamp black is the softest

Answer

Diamond is the hardest and coke is the softest

Answer

Coal is the hardest and coke is the softest

Question 53

53. Which is the formula of Chili Salt Peter?

Answer

Na₂So₄

Question 54

54. A pseudo solid is

Question 55

55. Gypsum is applied to the soil as a source of

Answer

Could not apply

Question 56

56. Which one is formula of borax?

Answer

Ca₂B₆O₁₁. 5H₂O

Answer

NaOH. B₂O₃

Answer

Na₂B₄O₇. 10H₂O

Answer

Na₂B₄O₇. 4G₂O

Question 57

57. Keeping in view the comparison of alkali metals with alkaline earth metals, the alkali metals have

Answer

Greater hardness

Answer

Lower ionization energy

Answer

Smaller ionic radii

Answer

High melting point

Question 58

58. Sodium metal cannot be stored under

Answer

Kerosene oil

Question 59

59. Which of the most basic of the following?

Question 60

60. Galena is an ore of

Question 61

61. Chrome yellow has a formula

Question 62

62. Which of the following imparts violet colouration to the non-luminous flame of Bunsen burner?

Question 63

63. The word alkali means

Question 64

64. The formula of Nitre is

Answer

Na₂CO₃

Answer 116

Alkaline earth metals

Answer 117

Metalloids

Answer 118

Alkali metals

Answer 119

H₂Mg₃(SiO₃)₄

Answer 120

Na₃AlF₆

Answer 121

Al₂F₂SiO₄

Answer 122

Clay and silica

Answer 123

Lime stone and silica

Answer 124

Lime stone and gypsum

Answer 125

Lime stone and clay

Answer 126

s – or – p

Answer 127

Both d – and f –

Answer 128

f – only

Answer 129

d – only

Answer 130

Ionic compounds

Answer 131

Molecular crystals

Answer 132

Semiconductors

Answer 133

Molecular addition compounds

Answer 134

Zinc sulphate

Answer 135

Potassium sulphate

Answer 136

Barium sulphate

Answer 137

Sodium sulphate

Answer 138

Excitation of free protons

Answer 139

Existence of body centered cubic lattice

Answer 140

Diffusion of sodium ions

Answer 141

Oscillation of loose electrons

Answer 142

Boric acid

Answer 143

Calcium carbonate

Answer 144

Colemanite

Answer 145

Baryata solution

Answer 146

Slaked lime

Answer 147

Caustic soda

Answer 148

Caustic potash

Answer 149

None of these

Answer 150

Al₂O₃. 2H₂O

Answer 151

Al₂O₃. SiF₄

Answer 152

In drying of ammonia solution

Answer 153

As a general drying agent

Answer 154

In drying of alcohols

Answer 155

In drying of benzene

Answer 156

It has delocalized mobile electron

Answer 157

Carbon atoms of each plane have sp²

Answer 158

There are Van der wall’s forces of attraction between the planes of c atoms

Answer 159

Carbon atoms have covalent bonds

Answer 160

Magnesium oxide

Answer 161

Nitrogen pent oxide

Answer 162

Zinc oxide

Answer 163

Aluminum oxide

Answer 164

Aluminum prepared electrolytically

Answer 165

Aluminum coated electrically with aluminum oxide

Answer 166

Aluminum obtained at anode

Answer 167

Aluminum allay containing 95% Al

Answer 168

NaAlSiO₄. 3H₂O

Answer 169

KH₂Al₃(SiO₄)₃

Answer 170

K2HAL(SiO₄)₃

Answer 171

NaKSiO₄. 10H₂O

Answer 172

Na₂CO₃. 7H₂O

Answer 173

Na₂CO₃. 10H₂O

Answer 174

Na₂CO₃. 3H₂O

Answer 175

Na₂CO₃.

Answer 176

Na₂CO₃

Answer 177

Pb(OH)₂.2PbCO₃

Answer 178

H₆B₄O₉

Answer 179

H₂B₄O₇

Answer 180

Carbrandum

Answer 181

For washing of eyes

Answer 182

For enamels and glazes

Answer 183

An antiseptic medicine

Answer 184

In soda bottles

Answer 185

Heat resistant

Answer 186

Low melting

Answer 187

Used to prepare chemical garden

Answer 188

Green in colour

Answer 189

Contact process

Answer 190

Termite process

Answer 191

Haber process

Answer 192

Hall process

Answer 193

Na₃BO₃

Answer 194

Na₂B₄O₇

Answer 195

Silica or siticates

Answer 196

Only silicates

Answer 197

F – block

Answer 198

S – block

Answer 199

D – block

Answer 200

P – block

Answer 201

Na₂O and SiO₂

Answer 202

Na₂SiO₃ and CaSiO₃

Answer 203

Na₂SiO₃ and SiO₂

Answer 204

Na₂CiO₃ and CO₂

Answer 205

Acidic oxide

Answer 206

It does not exists

Answer 207

Amphoteric oxide

Answer 208

Basic oxide

Answer 209

It is a metal

Answer 210

It is more electronegative

Answer 211

It is more electropositive

Answer 212

It has higher atomic weight

Answer 213

None of these

Answer 214

Amphoteric

Answer 215

Na₂CO₃. H₂O

Answer 216

Na₂B₄O₇

Answer 217

Magnesium and copper

Answer 218

Magnesium and potassium

Answer 219

Magnesium and barium

Answer 220

Magnesium and sodium

Answer 221

Al₂O₃.₂H₂O

Answer 222

Na₃ALF₆

Answer 223

Al₂O₃. H₂O

Answer 224

None of these

Answer 225

Ca(HCO₃)₂

Answer 226

Electrolytic process

Answer 227

Baeyer’s process

Answer 228

Serpeck’s process

Answer 229

Hoop’s process

Answer 230

Their metallic character decreases

Answer 231

Their ionization energy increases

Answer 232

Their atomic size decreases

Answer 233

The stability of +2 oxidation state increases

Answer 234

Its powder form reacts with O₂ and N₂ of air at 800C

Answer 235

It reacts with oxygen of air at high temperature (2000c)

Answer 236

None is correct

Answer 237

It reacts readily with oxygen of the air at room temperature

Answer 238

Na₂B₃O₆. 10H₂O

Answer 239

Na₂B₄O₇

Answer 240

Na₂B₄O₇.5H₂O

Answer 241

Na₂B₄O₇. 10H₂O

Answer 242

None of these

Answer 243

High ionization potential

Answer 244

High nuclear charge and ionization

Answer 245

High nuclear charge

Answer 246

Li, Na, K, Rb, Cs, Fr

Answer 247

Li, Na, Cs, K, Rb, Fr

Answer 248

Fr, Li, Rb, K, Na, Cs

Answer 249

Na, K, Li, Rb, Fe, Cs

Answer 250

KCL.MgCL₂.6H₂O

Answer 251

CaCO₃.MgCO₃

Answer 252

CaCl₂.MgCl₂.6H₂O

Answer 253

Na₃AIF₆

Answer 254

Aluminum oxide

Answer 255

Sodium tetra aluminate

Answer 256

Aluminum hydroxide

Answer 257

Sodium meta-aluminate

Answer 258

None of these

Answer 259

Square pyramid (carbon at apex)

Answer 260

Square planar

Answer 261

Irregular tetrahedron

Answer 262

Haemoglbin

Answer 263

Chlorophyll

Answer 264

1s2 2s2 2p6 3s2 3p6 4s2 3d1

Answer 265

1s2 2s2 2p4

Answer 266

1s2 2s2 2p3

Answer 267

1s2 2s2 2p6 3s2 3p1

Answer 268

Electropositivity

Answer 269

Atomic radii

Answer 270

Atomic volume

Answer 271

Iron undergoes reaction easily with water

Answer 272

Fe form mono and divalent ions

Answer 273

Oxygen forms a protective reaction easily with water

Answer 274

It is a noble metal

Answer 275

Li, Na, Be

Answer 276

All have same products

Answer 277

Li, Mg, Ca

Answer 278

Sr(NO₃)₂

Answer 279

Be(NO₃)₂

Answer 280

Mg(NO₃)₂

Answer 281

Al₂O₃. SiF₄

Answer 282

Al₂O₃. 2H₂O

Answer 283

Al₂O₃. 2SiO₂. 2H₂O

Answer 284

None of these

Answer 285

Tribasic acid

Answer 286

Dibasic acid

Answer 287

Monobasic acid

Answer 288

Reaction between iron and oxygen is endothermic

Answer 289

Refraction between aluminum and oxygen is endothermic

Answer 290

As compared to aluminum, iron has greater affinity for oxygen

Answer 291

As compared to iron, aluminum has greater affinity for oxygen

Answer 292

Baking soda

Answer 293

Washing soda

Answer 294

Plaster of Paris

Answer 295

Aqueous NaoH

Answer 296

Limestone, clay and gypsum

Answer 297

Limestone, gypsum and sand

Answer 298

Limestone, clay and sand

Answer 299

Limestone, gypsum and alumina

Answer 300

Acidic solution

Answer 301

Amphoteric

Answer 302

Noble gases

Answer 303

Changing into CaCO₃

Answer 304

Giving out water

Answer 305

Giving off CO₂

Answer 306

Combining with water

Answer 307

Remain constant

Answer 308

Do not show definite trend

Answer 309

Alkalinity of soil

Answer 310

Proper growth of plants

Answer 311

Soil porosity

Answer 312

As insulator

Answer 313

To produce alloy

Answer 314

As nitro meter

Answer 315

To remove air bubbles from molten metal

Answer 316

N₂ as well as CO₂

Total Questions:	155
Time Allowed:	60 Minutes
Total Marks:	155
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	Chemistry Test ECAT Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Chemistry Interview Question Answer

Chemistry S-Block Elements Online Mcqs Test

Important Chemistry S-Block Elements Question and Answer

Chemistry S-Block Elements Practice Test Online With Explanation

Chemistry

How to Score High in Chemistry S-Block Elements Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Malik Tahir

5 Comments

Leave a Reply Cancel reply

Important Chemistry S-Block Elements Question and Answer

Chemistry S-Block Elements Practice Test Online With Explanation

Chemistry

How to Score High in Chemistry S-Block Elements Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Latest Updates

Malik Tahir

5 Comments

Leave a Reply Cancel reply