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 chemical formula of bauxite is

Answer

Al₂O₃. SiF₄

Answer

Al₂O₃. 2H₂O

Answer

None of these

Question 2

2. The process of aluminum extraction is called

Answer

Haber process

Answer

Termite process

Answer

Hall process

Answer

Contact process

Question 3

3. In diaphragm cell, hydrogen is discharged by

Question 4

4. Causticisation process is used for the preparation of

Answer

Caustic potash

Answer

Slaked lime

Answer

Baryata solution

Answer

Caustic soda

Question 5

5. A combustible gas is liberated when caustic soda solution is heated with

Question 6

6. Silicon is an important constituent of

Answer

Haemoglbin

Answer

Chlorophyll

Question 7

7. Plaster of Paris hardens by

Answer

Giving off CO₂

Answer

Combining with water

Answer

Giving out water

Answer

Changing into CaCO₃

Question 8

8. The oxides of born and silicon are

Answer

Amphoteric

Answer

Acidic solution

Question 9

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

Answer

Na₂ CO₃

Question 10

10. Which of the following is most abundant in the earth’s crust?

Question 11

11. The element having least value of ionization energy among the following elements is

Question 12

12. The principle constituent of pyrex glass is

Question 13

13. Choose the number of group of periodic table to which alkali metals belong to

Question 14

14. Which of the following compounds has the lowest anion to cation size ratio?

Question 15

15. Which of the following in rain water is responsible for weathering of rocks?

Answer

Noble gases

Question 16

16. The wire in the flash bulbs is made up of

Question 17

17. BF₃ acts as acid according to the concept of

Question 18

18. The element having highest electronegativity among the following is

Question 19

19. Anodizing of Al is said when

Answer

Aluminum allay containing 95% Al

Answer

Aluminum obtained at anode

Answer

Aluminum coated electrically with aluminum oxide

Answer

Aluminum prepared electrolytically

Question 20

20. Which one is not an element of III A group?

Question 21

21. Metals belonging to the same group in the periodic table are

Answer

Magnesium and copper

Answer

Magnesium and sodium

Answer

Magnesium and potassium

Answer

Magnesium and barium

Question 22

22. Graphite is a good conductor of electricity. The reason is that

Answer

Carbon atoms have covalent bonds

Answer

Carbon atoms of each plane have sp²

Answer

It has delocalized mobile electron

Answer

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

Question 23

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

Question 24

24. Which of the following is monovalent?

Answer

Alkaline earth metals

Answer

Metalloids

Answer

Alkali metals

Question 25

25. The halide which is not hydrolyzed is

Question 26

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

Answer

They are more reactive

Answer

They have greater atomic size

Answer

They have smaller size

Question 27

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

Question 28

28. Down’s cell is used to prepare

Answer

Sodium carbonate

Answer

Sodium hydroxide

Answer

Sodium metal

Answer

Sodium bicarbonate

Question 29

29. Microcosmic salt is

Answer

Na(NH₄). H₂O

Answer

Na(NH₄)HPO₄.4H₂O

Answer

HPO₄.4H₂O

Answer

K(NH₄)HPO₃. 2H₂O

Question 30

30. Chemical A is used for water softening to remove temporary hardness. A reacts with sodium carbonate to generate caustic soda. When carbon dioxide is bubbled through A, it turns cloudy. What is the chemical formula of A?

Answer

Ca(HCO₃)₂

Question 31

31. Which is the most amphoteric?

Question 32

32. Which of the following gases burns with a blue flame?

Question 33

33. The reactivity of the alkali metal sodium with water, is made use of

Answer

As a general drying agent

Answer

In drying of benzene

Answer

In drying of alcohols

Answer

In drying of ammonia solution

Question 34

34. Which metal is protected by a layer of its own oxide?

Question 35

35. Borax is a white crystalline solid and it is

Answer

More soluble in cold water

Answer

Insoluble in water

Answer

Soluble only in organic solvents

Answer

More soluble in hot water

Question 36

36. Portland cement is manufactured by using

Answer

Limestone, clay and gypsum

Answer

Limestone, clay and sand

Answer

Limestone, gypsum and sand

Answer

Limestone, gypsum and alumina

Question 37

37. Alkali and alkaline earth metals show increasing trend down the group in

Answer

Atomic radii

Answer

Electropositivity

Answer

Atomic volume

Question 38

38. The aqueous solution of potash alum is

Answer

None of these

Question 39

39. Sodium metal cannot be stored under

Answer

Kerosene oil

Question 40

40. Which of the following mineral does not contain Al?

Question 41

41. The order of alkali metals is

Answer

Li, Na, Cs, K, Rb, Fr

Answer

Na, K, Li, Rb, Fe, Cs

Answer

Fr, Li, Rb, K, Na, Cs

Answer

Li, Na, K, Rb, Cs, Fr

Question 42

42. Nitrates of which elements give same products

Answer

Li, Mg, Ca

Answer

All have same products

Answer

Li, Na, Be

Question 43

43. The oxides of beryllium are

Answer

Amphoteric

Answer

None of these

Question 44

44. Boric acid cannot be used

Answer

An antiseptic medicine

Answer

For enamels and glazes

Answer

For washing of eyes

Answer

In soda bottles

Question 45

45. Choose the element which does not belong to group II A of the periodic table

Question 46

46. Setting of cement is an

Answer

Exothermic reaction

Answer

Endothermic reaction

Answer

Neither exothermic nor endothermic

Question 47

47. Al is more reactive than Fe but Al is less easily corroded than Fe because

Answer

It is a noble metal

Answer

Iron undergoes reaction easily with water

Answer

Fe form mono and divalent ions

Answer

Oxygen forms a protective reaction easily with water

Question 48

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

Answer

Barium sulphate

Answer

Zinc sulphate

Answer

Potassium sulphate

Answer

Sodium sulphate

Question 49

49. Which is formula of orthoboric acid?

Answer

H₆B₄O₉

Answer

H₂B₄O₇

Question 50

50. Which of the following is a Lewis acid?

Question 51

51. Which of the following is most dense?

Question 52

52. The formula of calcium cyanamide is

Question 53

53. Which is the chemical formula of mica?

Answer

NaKSiO₄. 10H₂O

Answer

KH₂Al₃(SiO₄)₃

Answer

NaAlSiO₄. 3H₂O

Answer

K2HAL(SiO₄)₃

Question 54

54. Which of the following is most abundant alkali metal in combined state in nature?

Answer

d – only

Answer

f – only

Answer

s – or – p

Answer

Both d – and f –

Question 55

55. Potassium is kept in

Question 56

56. Alkaline earth metals have higher densities, melting and boiling points than alkali metals because of

Answer

High ionization potential

Answer

High nuclear charge and ionization

Answer

High nuclear charge

Answer

None of these

Question 57

57. Ammonia may be prepared by heating ammonium chloride with

Answer

Aqueous NaoH

Question 58

58. Which one does not belong to alkaline earth metal?

Question 59

59. Which of the following sulphates is not soluble in water?

Answer

Potassium sulphate

Answer

Zinc sulphate

Answer

Barium sulphate

Answer

Sodium sulphate

Question 60

60. Plaster of Paris is a hydrate of

Question 61

61. Aluminum can jam radar due to

Answer

It is a good reflector of radiant energy

Answer

It is a conductor of electricity

Answer

It is a conductor of heat

Answer

It is not true

Question 62

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

Question 63

63. Which compound will show the highest lattice energy?

Question 64

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

Answer 113

Sodium meta-aluminate

Answer 114

Aluminum hydroxide

Answer 115

Aluminum oxide

Answer 116

Sodium tetra aluminate

Answer 117

Weakly basic

Answer 118

Amphoteric

Answer 119

Very strongly basic

Answer 120

Na₂B₃O₆. 10H₂O

Answer 121

Na₂B₄O₇. 10H₂O

Answer 122

Na₂B₄O₇.5H₂O

Answer 123

Na₂B₄O₇

Answer 124

On heating it melts in its water of crystallization

Answer 125

Its empirical formula is KAl(SO₄). 12H₂O

Answer 126

It is used in dyeing industry

Answer 127

Its aqueous sol. Is basic in nature

Answer 128

None of these

Answer 129

Square planar

Answer 130

Square pyramid (carbon at apex)

Answer 131

Irregular tetrahedron

Answer 132

Oscillation of loose electrons

Answer 133

Existence of body centered cubic lattice

Answer 134

Excitation of free protons

Answer 135

Diffusion of sodium ions

Answer 136

Amphoteric oxide

Answer 137

It does not exists

Answer 138

Acidic oxide

Answer 139

Basic oxide

Answer 140

Na₃AlF₆

Answer 141

Al₂F₂SiO₄

Answer 142

H₂Mg₃(SiO₃)₄

Answer 143

Green in colour

Answer 144

Low melting

Answer 145

Used to prepare chemical garden

Answer 146

Heat resistant

Answer 147

Colemanite

Answer 148

Calcium carbonate

Answer 149

Boric acid

Answer 150

Na₃BO₃

Answer 151

Na₂B₄O₇

Answer 152

Soil porosity

Answer 153

Alkalinity of soil

Answer 154

Proper growth of plants

Answer 155

Lower ionization energy

Answer 156

High melting point

Answer 157

Smaller ionic radii

Answer 158

Greater hardness

Answer 159

Baking soda

Answer 160

Washing soda

Answer 161

Plaster of Paris

Answer 162

Carbrandum

Answer 163

Na₂SiO₃ and SiO₂

Answer 164

Na₂O and SiO₂

Answer 165

Na₂CiO₃ and CO₂

Answer 166

Na₂SiO₃ and CaSiO₃

Answer 167

As nitro meter

Answer 168

To remove air bubbles from molten metal

Answer 169

To produce alloy

Answer 170

As insulator

Answer 171

Na₂CO₃. 10H₂O

Answer 172

Na₂CO₃. 3H₂O

Answer 173

Na₂CO₃. 7H₂O

Answer 174

Na₂CO₃.

Answer 175

Basic lead acetate

Answer 176

Acidic lead carbonate

Answer 177

Basic lead hydroxide

Answer 178

Basic lead carbonate

Answer 179

Only silicates

Answer 180

Silica or siticates

Answer 181

Reaction between iron and oxygen is endothermic

Answer 182

As compared to iron, aluminum has greater affinity for oxygen

Answer 183

Refraction between aluminum and oxygen is endothermic

Answer 184

As compared to aluminum, iron has greater affinity for oxygen

Answer 185

Graphite is the hardest which lamp black is the softest

Answer 186

Diamond is the hardest and graphite is the softest

Answer 187

Coal is the hardest and coke is the softest

Answer 188

Diamond is the hardest and coke is the softest

Answer 189

Solvay process

Answer 190

Castner process

Answer 191

Down process

Answer 192

Nelson process

Answer 193

Do not show definite trend

Answer 194

Remain constant

Answer 195

Hydration to yield another hydrate

Answer 196

Combination with atmospheric CO₂

Answer 197

Oxidation with atmospheric oxygen

Answer 198

Dehydration

Answer 199

None of these

Answer 200

Na₂CO₃

Answer 201

Al₂O₃.₂H₂O

Answer 202

Na₃ALF₆

Answer 203

Al₂O₃. H₂O

Answer 204

Na₂co₃

Answer 205

N₂ as well as CO₂

Answer 206

Molten NaCl

Answer 207

Calcium bicarbonate

Answer 208

Calcium hydroxide

Answer 209

Calcium carbonate

Answer 210

Calcium oxide

Answer 211

Sr(NO₃)₂

Answer 212

Be(NO₃)₂

Answer 213

Mg(NO₃)₂

Answer 214

Incomplete p-subshell

Answer 215

High charge in nucleus

Answer 216

Al has larger radius

Answer 217

Al has greater ionization potential

Answer 218

Na₂So₄

Answer 219

P – block

Answer 220

D – block

Answer 221

S – block

Answer 222

F – block

Answer 223

Silicon has all sigma bonds

Answer 224

CO2 is an independent molecule while SiO2 has network covalent structure

Answer 225

Carbon is non-metal while silicon is semi-metal

Answer 226

CO2 forms multiple bond while silicon does not form multiple bonds

Answer 227

Could not apply

Answer 228

Aluminum peroxide

Answer 229

Sodium meta aluminate

Answer 230

Sodium aluminum hydroxide

Answer 231

Sodium aluminum hydride

Answer 232

It is more electronegative

Answer 233

It is a metal

Answer 234

It has higher atomic weight

Answer 235

It is more electropositive

Answer 236

CaCO₃.MgCO₃

Answer 237

KCL.MgCL₂.6H₂O

Answer 238

Na₃AIF₆

Answer 239

CaCl₂.MgCl₂.6H₂O

Answer 240

It gives hydrogen with water

Answer 241

It is a soft alkali metal

Answer 242

It has mobile electrons

Answer 243

It has only one electron in the outermost orbit

Answer 244

Fifth group

Answer 245

First transition series

Answer 246

Third group

Answer 247

First group

Answer 248

Molecular addition compounds

Answer 249

Molecular crystals

Answer 250

Ionic compounds

Answer 251

Semiconductors

Answer 252

Na₂CO₃

Answer 253

Pb(OH)₂.2PbCO₃

Answer 254

Na₂S₂O₃

Answer 255

Na₂SO₄

Answer 256

It reacts readily with oxygen of the air at room temperature

Answer 257

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

Answer 258

None is correct

Answer 259

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

Answer 260

Their atomic size decreases

Answer 261

Their ionization energy increases

Answer 262

The stability of +2 oxidation state increases

Answer 263

Their metallic character decreases

Answer 264

Aluminum oxide

Answer 265

Nitrogen pent oxide

Answer 266

Zinc oxide

Answer 267

Magnesium oxide

Answer 268

Lime stone and clay

Answer 269

Lime stone and silica

Answer 270

Lime stone and gypsum

Answer 271

Clay and silica

Answer 272

Na₂B₄O₇. 10H₂O

Answer 273

NaOH. B₂O₃

Answer 274

Ca₂B₆O₁₁. 5H₂O

Answer 275

Na₂B₄O₇. 4G₂O

Answer 276

Na₂CO₃. H₂O

Answer 277

Na₂B₄O₇

Answer 278

Antifreeze

Answer 279

Hydraulic brakes

Answer 280

Lubricants

Answer 281

Water repellent

Answer 282

Serpeck’s process

Answer 283

Electrolytic process

Answer 284

Hoop’s process

Answer 285

Baeyer’s process

Answer 286

None of these

Answer 287

Dibasic acid

Answer 288

Tribasic acid

Answer 289

Monobasic acid

Answer 290

Hg₂Cl₂

Answer 291

White amorphous solid

Answer 292

White crystalline solid

Answer 293

None of these

Answer 294

White crystalline sublime solid

Answer 295

Low atomic volume

Answer 296

Low density

Answer 297

Low electro negativity

Answer 298

Low ionization energy

Answer 299

In tanning of leather

Answer 300

As a mordant is dyeing

Answer 301

In purification of water

Answer 302

As an insecticide

Answer 303

Na₂HBO₃

Answer 304

Na₂B₄O₇

Answer 305

Na₃BO₃

Answer 306

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

Answer 307

1s2 2s2 2p6 3s2 3p1

Answer 308

1s2 2s2 2p4

Answer 309

1s2 2s2 2p3

Answer 310

Al₂O₃. 2H₂O

Answer 311

Al₂O₃. 2SiO₂. 2H₂O

Answer 312

Al₂O₃. SiF₄

Answer 313

Sparingly soluble in cold water but readily soluble in hot water

Answer 314

Readily soluble in cold water

Answer 315

Sparingly soluble in cold water at all temperatures

Answer 316

Highly soluble in water at all temperatures.

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