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 halide which is not hydrolyzed is

Question 2

2. Choose the correct statement

Answer

Diamond is the hardest and graphite is the softest

Answer

Coal is the hardest and coke is the softest

Answer

Diamond is the hardest and coke is the softest

Answer

Graphite is the hardest which lamp black is the softest

Question 3

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

Answer

First transition series

Answer

Third group

Answer

Fifth group

Answer

First group

Question 4

4. Solid CO₂ (dry ice) has a structure just like

Answer

None of these

Question 5

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

Question 6

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

Question 7

7. Which of the most basic of the following?

Question 8

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

Question 9

9. The metal which is used in thermite process because of its activity is

Question 10

10. What is true about solubility of orthoboric acid?

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

Answer

Highly soluble in water at all temperatures.

Question 11

11. Which of the following is most dense?

Question 12

12. Red lead is

Question 13

13. Which is the chemical formula of mica?

Answer

NaKSiO₄. 10H₂O

Answer

K2HAL(SiO₄)₃

Answer

KH₂Al₃(SiO₄)₃

Answer

NaAlSiO₄. 3H₂O

Question 14

14. Galena is an ore of

Question 15

15. Point out one of the following which shows moderate electrical conductivity:

Answer

Carbrandum

Question 16

16. Which is formula of orthoboric acid?

Answer

H₆B₄O₉

Answer

H₂B₄O₇

Question 17

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

Answer

Sodium aluminum hydride

Answer

Sodium aluminum hydroxide

Answer

Aluminum peroxide

Answer

Sodium meta aluminate

Question 18

18. In the manufacture of cement which of the following is used?

Answer

Lime stone and gypsum

Answer

Lime stone and silica

Answer

Clay and silica

Answer

Lime stone and clay

Question 19

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

Answer

High nuclear charge and ionization

Answer

None of these

Answer

High nuclear charge

Answer

High ionization potential

Question 20

20. Boric acid cannot be used

Answer

An antiseptic medicine

Answer

For enamels and glazes

Answer

For washing of eyes

Answer

In soda bottles

Question 21

21. Alkali metal hydroxides are stable to heat except

Question 22

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

Answer

In drying of benzene

Answer

In drying of alcohols

Answer

In drying of ammonia solution

Answer

As a general drying agent

Question 23

23. Microcosmic salt is

Answer

HPO₄.4H₂O

Answer

K(NH₄)HPO₃. 2H₂O

Answer

Na(NH₄)HPO₄.4H₂O

Answer

Na(NH₄). H₂O

Question 24

24. The aqueous solution of potash alum is

Answer

None of these

Question 25

25. What is true about physical state of borax?

Answer

White amorphous solid

Answer

None of these

Answer

White crystalline solid

Answer

White crystalline sublime solid

Question 26

26. Silicon is an important constituent of

Answer

Haemoglbin

Answer

Chlorophyll

Question 27

27. Setting of Plaster of Paris involves

Answer

Dehydration

Answer

Combination with atmospheric CO₂

Answer

Oxidation with atmospheric oxygen

Answer

Hydration to yield another hydrate

Question 28

28. The process of aluminum extraction is called

Answer

Haber process

Answer

Hall process

Answer

Termite process

Answer

Contact process

Question 29

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

Answer

Its empirical formula is KAl(SO₄). 12H₂O

Answer

Its aqueous sol. Is basic in nature

Answer

It is used in dyeing industry

Answer

On heating it melts in its water of crystallization

Question 30

30. Mica and bauxite are ores of

Question 31

31. Bleaching powder is a compound having a formula

Question 32

32. Setting of cement is an

Answer

Neither exothermic nor endothermic

Answer

Endothermic reaction

Answer

Exothermic reaction

Question 33

33. Which is the formula of Chili Salt Peter?

Answer

Na₂So₄

Question 34

34. Ammonia may be prepared by heating ammonium chloride with

Answer

Aqueous NaoH

Question 35

35. Among the following oxides, the one which is most basic is

Answer

Nitrogen pent oxide

Answer

Aluminum oxide

Answer

Zinc oxide

Answer

Magnesium oxide

Question 36

36. The chemical formula of bauxite is

Answer

Al₂O₃. 2H₂O

Answer

None of these

Answer

Al₂O₃. SiF₄

Question 37

37. Which of the following is a Lewis acid?

Question 38

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

Answer

f – only

Answer

d – only

Answer

s – or – p

Answer

Both d – and f –

Question 39

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

Question 40

40. Aluminum reacts with caustic soda to form

Answer

Sodium tetra aluminate

Answer

Aluminum hydroxide

Answer

Sodium meta-aluminate

Answer

Aluminum oxide

Question 41

41. The word alkali means

Question 42

42. Chrome yellow has a formula

Question 43

43. AlCl₃ exist as dimmer because

Answer

Incomplete p-subshell

Answer

Al has larger radius

Answer

High charge in nucleus

Answer

Al has greater ionization potential

Question 44

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

Answer

Calcium hydroxide

Answer

Calcium bicarbonate

Answer

Calcium oxide

Answer

Calcium carbonate

Question 45

45. The formula of calcium cyanamide is

Question 46

46. Alum is not used

Answer

As a mordant is dyeing

Answer

In purification of water

Answer

As an insecticide

Answer

In tanning of leather

Question 47

47. White lead is

Answer

Basic lead acetate

Answer

Acidic lead carbonate

Answer

Basic lead hydroxide

Answer

Basic lead carbonate

Question 48

48. Which electronic configuration corresponds to an element of group IIIA?

Answer

1s2 2s2 2p3

Answer

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

Answer

1s2 2s2 2p6 3s2 3p1

Answer

1s2 2s2 2p4

Question 49

49. Which one is formula of borax?

Answer

Ca₂B₆O₁₁. 5H₂O

Answer

Na₂B₄O₇. 10H₂O

Answer

Na₂B₄O₇. 4G₂O

Answer

NaOH. B₂O₃

Question 50

50. Plaster of Paris hardens by

Answer

Combining with water

Answer

Giving off CO₂

Answer

Changing into CaCO₃

Answer

Giving out water

Question 51

51. A pseudo solid is

Question 52

52. The alkali metal that reacts with nitrogen directly to form nitride is

Question 53

53. With the increase in atomic weights, melting points of the alkali metals

Answer

Do not show definite trend

Answer

Remain constant

Question 54

54. Chile Salt peter is

Answer

Na₂S₂O₃

Answer

Na₂SO₄

Question 55

55. NaNO₃ decomposes on heating at high temperature to give

Question 56

56. The oxides of born and silicon are

Answer

Amphoteric

Answer

Acidic solution

Question 57

57. Leblanc process is employed in the manufacture of

Answer

Washing soda

Answer

Plaster of Paris

Answer

Baking soda

Question 58

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

Answer

Electropositivity

Answer

Atomic radii

Answer

Atomic volume

Question 59

59. Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?

Answer

Their atomic size decreases

Answer

The stability of +2 oxidation state increases

Answer

Their metallic character decreases

Answer

Their ionization energy increases

Question 60

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

Answer

Barium sulphate

Answer

Zinc sulphate

Answer

Sodium sulphate

Answer

Potassium sulphate

Question 61

61. Aluminum oxide is

Answer

Acidic oxide

Answer

Amphoteric oxide

Answer

It does not exists

Answer

Basic oxide

Question 62

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

Answer

Sodium sulphate

Answer

Zinc sulphate

Answer

Barium sulphate

Answer

Potassium sulphate

Question 63

63. Bleaching action of bleaching powder is due to the liberation of

Question 64

64. Dolomite has the composition

Answer

CaCO₃.MgCO₃

Answer

KCL.MgCL₂.6H₂O

Answer

Na₃AIF₆

Answer

CaCl₂.MgCl₂.6H₂O

Answer 144

Molten NaCl

Answer 145

Semiconductors

Answer 146

Molecular addition compounds

Answer 147

Molecular crystals

Answer 148

Ionic compounds

Answer 149

Baeyer’s process

Answer 150

Electrolytic process

Answer 151

Hoop’s process

Answer 152

Serpeck’s process

Answer 153

Na₂CO₃

Answer 154

Iron undergoes reaction easily with water

Answer 155

It is a noble metal

Answer 156

Oxygen forms a protective reaction easily with water

Answer 157

Fe form mono and divalent ions

Answer 158

Amphoteric

Answer 159

Very strongly basic

Answer 160

Weakly basic

Answer 161

Na₂CO₃. 7H₂O

Answer 162

Na₂CO₃. 3H₂O

Answer 163

Na₂CO₃.

Answer 164

Na₂CO₃. 10H₂O

Answer 165

Soil porosity

Answer 166

Proper growth of plants

Answer 167

Alkalinity of soil

Answer 168

Caustic soda

Answer 169

Baryata solution

Answer 170

Slaked lime

Answer 171

Caustic potash

Answer 172

Na₂CO₃

Answer 173

Pb(OH)₂.2PbCO₃

Answer 174

Kerosene oil

Answer 175

Na₂SiO₃ and SiO₂

Answer 176

Na₂CiO₃ and CO₂

Answer 177

Na₂SiO₃ and CaSiO₃

Answer 178

Na₂O and SiO₂

Answer 179

Al₂O₃. SiF₄

Answer 180

Al₂O₃. 2H₂O

Answer 181

Al₂O₃. 2SiO₂. 2H₂O

Answer 182

Castner process

Answer 183

Nelson process

Answer 184

Solvay process

Answer 185

Down process

Answer 186

Tribasic acid

Answer 187

None of these

Answer 188

Monobasic acid

Answer 189

Dibasic acid

Answer 190

CO2 forms multiple bond while silicon does not form multiple bonds

Answer 191

CO2 is an independent molecule while SiO2 has network covalent structure

Answer 192

Silicon has all sigma bonds

Answer 193

Carbon is non-metal while silicon is semi-metal

Answer 194

Na₂B₄O₇.5H₂O

Answer 195

Na₂B₄O₇. 10H₂O

Answer 196

Na₂B₄O₇

Answer 197

Na₂B₃O₆. 10H₂O

Answer 198

Lower ionization energy

Answer 199

Greater hardness

Answer 200

High melting point

Answer 201

Smaller ionic radii

Answer 202

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

Answer 203

It reacts readily with oxygen of the air at room temperature

Answer 204

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

Answer 205

None is correct

Answer 206

D – block

Answer 207

P – block

Answer 208

S – block

Answer 209

F – block

Answer 210

Low ionization energy

Answer 211

Low density

Answer 212

Low electro negativity

Answer 213

Low atomic volume

Answer 214

None of these

Answer 215

Irregular tetrahedron

Answer 216

Square pyramid (carbon at apex)

Answer 217

Square planar

Answer 218

Na₃AlF₆

Answer 219

H₂Mg₃(SiO₃)₄

Answer 220

Al₂F₂SiO₄

Answer 221

To produce alloy

Answer 222

To remove air bubbles from molten metal

Answer 223

As insulator

Answer 224

As nitro meter

Answer 225

Metalloids

Answer 226

Alkaline earth metals

Answer 227

Alkali metals

Answer 228

Li, Na, K, Rb, Cs, Fr

Answer 229

Fr, Li, Rb, K, Na, Cs

Answer 230

Li, Na, Cs, K, Rb, Fr

Answer 231

Na, K, Li, Rb, Fe, Cs

Answer 232

Be(NO₃)₂

Answer 233

Sr(NO₃)₂

Answer 234

Mg(NO₃)₂

Answer 235

It has mobile electrons

Answer 236

It has only one electron in the outermost orbit

Answer 237

It gives hydrogen with water

Answer 238

It is a soft alkali metal

Answer 239

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

Answer 240

Carbon atoms of each plane have sp²

Answer 241

It has delocalized mobile electron

Answer 242

Carbon atoms have covalent bonds

Answer 243

Antifreeze

Answer 244

Hydraulic brakes

Answer 245

Water repellent

Answer 246

Lubricants

Answer 247

Limestone, gypsum and alumina

Answer 248

Limestone, clay and gypsum

Answer 249

Limestone, clay and sand

Answer 250

Limestone, gypsum and sand

Answer 251

Al₂O₃.₂H₂O

Answer 252

Al₂O₃. H₂O

Answer 253

Na₃ALF₆

Answer 254

N₂ as well as CO₂

Answer 255

Na₃BO₃

Answer 256

Na₂B₄O₇

Answer 257

Na₂HBO₃

Answer 258

Na₂ CO₃

Answer 259

Only silicates

Answer 260

Silica or siticates

Answer 261

It is a conductor of heat

Answer 262

It is a conductor of electricity

Answer 263

It is not true

Answer 264

It is a good reflector of radiant energy

Answer 265

Na₃BO₃

Answer 266

Na₂B₄O₇

Answer 267

All have same products

Answer 268

Li, Na, Be

Answer 269

Li, Mg, Ca

Answer 270

Amphoteric

Answer 271

None of these

Answer 272

Magnesium and potassium

Answer 273

Magnesium and sodium

Answer 274

Magnesium and barium

Answer 275

Magnesium and copper

Answer 276

Could not apply

Answer 277

Sodium carbonate

Answer 278

Sodium hydroxide

Answer 279

Sodium bicarbonate

Answer 280

Sodium metal

Answer 281

Ca(HCO₃)₂

Answer 282

Excitation of free protons

Answer 283

Existence of body centered cubic lattice

Answer 284

Diffusion of sodium ions

Answer 285

Oscillation of loose electrons

Answer 286

Hg₂Cl₂

Answer 287

Calcium carbonate

Answer 288

Colemanite

Answer 289

Boric acid

Answer 290

Na₂B₄O₇

Answer 291

Na₂CO₃. H₂O

Answer 292

Noble gases

Answer 293

They have greater atomic size

Answer 294

They are more reactive

Answer 295

They have smaller size

Answer 296

Soluble only in organic solvents

Answer 297

Insoluble in water

Answer 298

More soluble in hot water

Answer 299

More soluble in cold water

Answer 300

It is more electropositive

Answer 301

It is a metal

Answer 302

It has higher atomic weight

Answer 303

It is more electronegative

Answer 304

Na₂co₃

Answer 305

Aluminum allay containing 95% Al

Answer 306

Aluminum prepared electrolytically

Answer 307

Aluminum coated electrically with aluminum oxide

Answer 308

Aluminum obtained at anode

Answer 309

Green in colour

Answer 310

Low melting

Answer 311

Heat resistant

Answer 312

Used to prepare chemical garden

Answer 313

As compared to aluminum, iron has greater affinity for oxygen

Answer 314

As compared to iron, aluminum has greater affinity for oxygen

Answer 315

Reaction between iron and oxygen is endothermic

Answer 316

Refraction between aluminum and oxygen is endothermic

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