Chemistry The Halogens and Noble Gases Online Mcqs Test

Q: How can I prepare for Chemistry The Halogens and Noble Gases Online Mcqs Test?

You can prepare for Chemistry The Halogens and Noble Gases 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. P₂O₅ is heated with water to give

Answer

Hypo phosphorous acid

Answer

Hypo phosphoric acid

Answer

Phosphorous acid

Answer

Orthophosphoric acid

Question 2

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

Answer

Sodiums sulphates

Answer

Sodium persulphate

Answer

Sodium thiosulphate

Answer

Sodium sulphides

Question 3

3. Polyanion formation is maximum in

Question 4

4. The metal used for making radiation shield is

Question 5

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

Answer

Nitrosyl chloride

Answer

Phosphorus trichloride

Answer

Nitrogen trichloride

Answer

Hyponitrous acid

Question 6

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

Answer

Haemoglobin

Answer

Chlorophyll

Question 7

7. In which form boron exist mostly in nature

Answer

Oxyborates

Question 8

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

Answer

HF molecules form intermolecular H-bonds

Answer

HF is the weakest acid

Answer

Fluorine atom is smaller in size

Answer

Fluorine is highly reactive

Question 9

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

Question 10

10. Select the weakest acid among the following

Question 11

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

Question 12

12. Which one is the weakest oxyacid of chlorine?

Question 13

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

Question 14

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

Answer

More electro negativity of fluorine

Answer

Non-metallic nature of fluorine

Answer

Small size of fluorine

Answer

More electron repulsion in fluorine

Question 15

15. Identify the correct statement

Answer

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

Answer

Elemental Na is easily oxidized

Answer

Elemental Na is a strong oxidizing agent

Answer

Elemental Na is insoluble in NH₃

Question 16

16. Calcium is obtained by

Answer

Reduction of calcium chloride with carbon

Answer

Roasting lime stone

Answer

Electrolysis of solution of calcium chloride in water

Answer

Electrolysis of molten anhydrous or fused calcium chloride

Question 17

17. Sulphuric acid has great affinity for water because

Answer

Acid decomposes water

Answer

It hydrolyses the acid

Answer

Acid forms hydrates with water

Answer

It decomposes the acid

Question 18

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

Answer

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer

Fluorine does not form oxoacid

Answer

Bond energy of fluorine is less than that of chlorine

Answer

Electron affinity of chlorine is greater than that of fluorine

Question 19

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

Answer

In the atmosphere

Answer

As salts in ponds

Question 20

20. The most acidic of the following compounds is

Question 21

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

Answer

First ionization energy

Answer

Ionic radius

Answer

Melting point

Answer

Electro negativity

Question 22

22. Alkali metals are generally extracted by

Answer

Electrolytic methods

Answer

Reduction methods

Answer

Displacement methods

Answer

Double decomposition methods

Question 23

23. Which of the following is acidic?

Question 24

24. The bleaching action of chlorine is due to

Answer

Hydrogenation

Answer

Chlorination

Question 25

25. XeF₄ on partial hydrolysis produces

Question 26

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

Question 27

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

Answer

Lattice energies if solids

Answer

Entropy of solution formation

Answer

Inter ionic attraction

Answer

Hydration energies of cations

Question 28

28. The noble gas forming the maximum number of compounds

Question 29

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

Question 30

30. Strongest reducing agent is

Question 31

31. Indicate the correct statement

Answer

Alkali metals have ns’ configuring in outermost shells

Answer

Alkali metals do not reacts with metals

Answer

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

Answer

Alkali metal atom has the smallest size in its period

Question 32

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

Answer

None of these

Question 33

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

Question 34

34. SO3 is not dissolve directly in H2O because

Answer

The reaction is highly exothermic

Answer

The reaction does not go to completion

Answer

SO₃ is insoluble in H₂O

Answer

The reaction is quite slow

Question 35

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

Question 36

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

Answer

Boiling point

Answer

Atomic radius

Answer

Ionization energy

Question 37

37. The ionization potential is lowest for the

Answer

Inert gases

Answer

Alkaline earth metals

Answer

Alkali metals

Question 38

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

Question 39

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

Answer

None of these

Question 40

40. Halogens exist in the form of

Answer

Diatomic molecules

Answer

Monoatomic molecules

Answer

Cannot be predicted

Answer

Various forms

Question 41

41. The halogen that is most easily reduced is

Question 42

42. Which one of them is monoatomic?

Question 43

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

Answer

Free electrons

Answer

Free molecules

Answer

Atoms of sodium and chlorine

Question 44

44. Bromine is obtained on a commercial scale from

Answer

Carnallite

Answer

Common salt

Question 45

45. Heavy water is obtained by

Answer

Simple distillation of water

Answer

Removing impurities of calcium and magnesium form water

Answer

Prolonged electrolysis of water

Answer

Dissolving heavy salt in water

Question 46

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

Question 47

47. 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

Answer

A sulphate

Answer

A carbonate

Question 48

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

Answer

Noble gases have o heat of vapourization

Answer

It increases gradually down the group

Answer

It decreases gradually down the group

Answer

None of these

Question 49

49. Which is valence shell configuration of halogens?

Answer

nS₂, nP₃

Answer

nS₂, nP₆

Answer

NS₂, nP₄

Answer

ns₂, nP₅

Question 50

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

Answer

Na₃PO₄

Answer

Active charcoal

Answer

Anhydrous calcium chloride

Answer

Phosphorus pentoxidse

Question 51

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

Answer

Variable trend

Answer

Highly soluble in water

Answer

Insoluble in water

Answer

Less soluble in water

Question 52

52. Identify the correct statement

Answer

Plaster of Paris is obtained by partial oxidation of gypsum

Answer

Gypsum is obtained by heating plaster of pairs

Answer

Gypsum contains a lower percentage of calcium than plaster of pairs

Answer

Plaster of Pairs can be obtained by partial oxidation of gypsum

Question 53

53. Which halogen have most corrosive action on skin?

Question 54

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

Answer

It is used in the formation white cement

Answer

It is used furniture polish

Answer

It is as filter for soap

Answer

It is used as fire proof in textile

Question 55

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

Answer

Aluminum and silicon

Answer

Proton and silicon

Answer

Gallium and Germanium

Answer

Iron and sulphur

Question 56

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

Question 57

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

Question 58

58. HNO₂ acts as an/a

Answer

All the three

Answer

Reducing agent

Answer

Oxidizing agent

Question 59

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

Question 60

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

Answer

Weak reducing agents

Answer

Weak oxidizing agents

Answer

Strong reducing agents

Answer

Strong oxidizing agents

Question 61

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

Answer

Dipole-dipole forces

Answer

H. bonding

Answer

None of these

Answer

Strongest vanderwaal’s force

Question 62

62. Electropositive character increase down the group due to

Answer

All of these

Answer

Increase in atomic size of elements

Answer

Decrease in I.P

Answer

Decrease in electronegativity of the elements

Question 63

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

Answer

Weak van der Waals forces between atoms

Answer

Gaseous nature

Answer

High polarisability

Question 64

64. Which gives green colour in fireworks?

Answer 133

Heavy metals

Answer 134

Noble gases

Answer 135

Light metals

Answer 136

Weak acid and strong base

Answer 137

Weak acid and weak base

Answer 138

Strong acid and weak base

Answer 139

Strong acid and strong base

Answer 140

Magnallium is one alloy of Mg and zinc

Answer 141

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

Answer 142

Magnesium reacts with cold water and liberates hydrogen

Answer 143

Sodium reduces CO₂ to carbon

Answer 144

Lighter than air and cheap to produce

Answer 145

Expense, but a very uncreative gas

Answer 146

Less dense then air and not flammable

Answer 147

Expensive but easy to store in cylinder

Answer 148

Magnesium sulphates

Answer 149

Ferrous ammonium sulphate

Answer 150

Magnesium ammonium phosphate

Answer 151

Calcium sulphates

Answer 152

Fluoride ion

Answer 153

Nitride ion

Answer 154

Chloride ion

Answer 155

Sodium ion

Answer 156

The lattice energy has no role to play in solubility

Answer 157

The lattice energy of BaSO₄ is more than its hydration energy

Answer 158

Both a and b

Answer 159

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer 160

37, 19, 3, 55

Answer 161

9, 17, 35, 53

Answer 162

12, 20, 56, 88

Answer 163

1, 12, 30, 4, 62

Answer 164

Al₂(OH)₄

Answer 165

Na₂Al(OH)₄

Answer 166

Na₃AlO₃

Answer 167

Low charge density

Answer 168

Low electronegativity

Answer 169

Lower electro positivity

Answer 170

Frank land

Answer 171

J.J Thomson

Answer 172

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

Answer 173

Noble gases will all burn in pure oxygen

Answer 174

Noble gases are all dense gases

Answer 175

None of these

Answer 176

s-orbitals

Answer 177

d-orbitals

Answer 178

p-orbitals

Answer 179

Preventing overdeveloping and fogging

Answer 180

Reducing solubility of AgBr

Answer 181

Converting silver halides to metallic silver

Answer 182

Dissolving out unreacted silver bromide

Answer 183

Dithionic acid

Answer 184

Carlo’s acid

Answer 185

Pyrosulphuric acid

Answer 186

Sulphurous acid

Answer 187

CaO has high m.p.

Answer 188

Lattice energy of CaO is much higher than that of Kl

Answer 189

Kl has high m.p.

Answer 190

Kl is soluble in benzene

Answer 191

The colour of picture

Answer 192

Picture printed

Answer 193

Developing picture

Answer 194

The fixation of picture

Answer 195

Ca and CO₂

Answer 196

High lattice energy of M²⁺ ions in the solid state

Answer 197

None of these of M²⁺ ions

Answer 198

Diamagnetic nature

Answer 199

High energies of hydration of M²⁺ in solution

Answer 200

Nuclear neutron-proton number rations

Answer 201

Atomic numbers

Answer 202

Nuclear masses

Answer 203

Atomic masses

Answer 204

It corrodes the organic tissues

Answer 205

It is used in soda water

Answer 206

It reacts with chlorine gas

Answer 207

It reacts with fats to form soap

Answer 208

Lose 3 electrons

Answer 209

Gain 3 electrons

Answer 210

Lose 2 electrons

Answer 211

Gain 2 electrons

Answer 212

Atomic radius

Answer 213

Ionization energy

Answer 214

Electro negativity

Answer 215

To make a conducting solution of bauxite

Answer 216

To increase Al production

Answer 217

To act as reducing agent

Answer 218

To protect the anodes

Answer 219

Atomic mass

Answer 220

Atomic number

Answer 221

Isotopic number

Answer 222

Mass number

Answer 223

Diclacium silicate

Answer 224

Tri-calcium aluminate

Answer 225

Tetra calcium aluminoferrite

Answer 226

Tri-calcium silicate

Answer 227

Mixture of argon and oxygen

Answer 228

Mixture of xenon and nitrogen

Answer 229

Mixture of helium and oxygen

Answer 230

Mixture of neon and oxygen

Answer 231

Borazole is nonpolar compound

Answer 232

Of localized electrons in it

Answer 233

Borazole is polar compound

Answer 234

Borazole is electron deficient compound

Answer 235

Marshall’s acid

Answer 236

Carlo’s acid

Answer 237

Sulphuric acid

Answer 238

None of these

Answer 239

Sp³d²-hybridisation

Answer 240

Sp²-hybridisation

Answer 241

Sp³- hybridization

Answer 242

Sp-hybridisation

Answer 243

Ca(CN)₂ + C

Answer 244

CaCN₂ + C

Answer 245

CaC₂ + C

Answer 246

Pyro phosphoric acid

Answer 247

Orthophosphoric acid

Answer 248

Hypo phosphorous acid

Answer 249

Metaphosphoric acid

Answer 250

Cannot be predicted

Answer 251

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 252

‘Li’ has a great tendency to form hydrates

Answer 253

‘Li’ is not effected by air

Answer 254

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

Answer 255

Polyatomic

Answer 256

Monoatomic

Answer 257

All of these

Answer 258

CaSO₄. 3H₂O

Answer 259

CaSO₄.2H₂O

Answer 260

CaSO₄. 1/2H₂O

Answer 261

Nitrogen is much less soluble in blood than helium

Answer 262

Nitrogen is highly soluble in water

Answer 263

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

Answer 264

Helium is much less soluble in blood than nitrogen

Answer 265

Both oxidized and reduced

Answer 266

I₂>Br₂>U₂>F₂

Answer 267

F₂>Cl₂>Br₂>I2

Answer 268

I₂>F₂>Br₂>U₂

Answer 269

U₂>Br₂>I₂>F₂

Answer 270

More than O and Se

Answer 271

Equal to O and Se

Answer 272

More than O but less than Se

Answer 273

Less than O but more than SE

Answer 274

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

Answer 275

Sodium is the most abundant metallic element in sea water

Answer 276

Ionic character of alkali metal halides decreases down the group

Answer 277

Melting and boiling points of alkali metals decrease down the group

Answer 278

Reaction with CO₂

Answer 279

Reaction with NaOH

Answer 280

Reaction with brine solution

Answer 281

Presence of NH₃

Answer 282

Thionyl chloride

Answer 283

Sulphur tetrachloride

Answer 284

Sulphuryl chloride

Answer 285

Sulphur monochloride

Answer 286

Antiferromagnetic

Answer 287

Ferromagnetic

Answer 288

Paramagnetic

Answer 289

Diamagnetic

Answer 290

Low first ionization energy

Answer 291

High dissociation energy

Answer 292

Small size

Answer 293

Calcried gypsum

Answer 294

Sea shells

Answer 295

A marble states

Answer 296

Precipitate Mg metal

Answer 297

Precipitate Mg

Answer 298

Leads to the dissolution of beryllium metal

Answer 299

Have no effect

Answer 300

Mg > Na > Al > Si

Answer 301

Si > Mg > Al > Na

Answer 302

Al > Mg > Na > Si

Answer 303

Na > Mg > Al > Si

Answer 304

Higher I-P

Answer 305

Zero electron affinity

Answer 306

Large size

Answer 307

Chromic chloride

Answer 308

Chromyl chloride

Answer 309

Chromous chloride

Answer 310

In metallurgical process

Answer 311

As a drying agent

Answer 312

As a plaster for walls

Answer 313

In dentistry and surgery

Answer 314

Li₂CO₃ is soluble in water

Answer 315

Carbonates of Na, K, NH₄ are soluble in water

Answer 316

Carbonates of Ca, Ba, Sr are soluble in water

Answer 317

Basic carbonates of Mg and Cu are soluble in water

Answer 318

O₂ and Ar

Answer 319

O₂ and He

Answer 320

CO₂ and Ar

Answer 321

O₂ and CO₂

Answer 322

It is highly hygroscopic

Answer 323

It is covalent

Answer 324

HCl is formed in moist air

Answer 325

It is very volatile

Answer 326

High atomic number

Answer 327

Electron affinity

Answer 328

Energy dissociation

Answer 329

Hydration energy of ion

Answer 330

Tetrabasic

Answer 331

Inter – ionic attraction

Answer 332

Entropy of solution formation

Answer 333

Hydration energies of cations

Answer 334

Lattice energy solids

Answer 335

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

Answer 336

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

Answer 337

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

Answer 338

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

Answer 339

Acidic nature

Answer 340

Electron deficiency

Answer 341

Ionization property

Answer 342

Covalent nature

Answer 343

Tetrahedral

Answer 344

Distorted octahedral

Answer 345

None of these

Answer 346

To prevent the action of water and salt

Answer 347

Mark the ship lighter

Answer 348

Prevent puncturing by under sea rock

Answer 349

Keep away the sharks

Answer 350

Iodine solution

Answer 351

Frank land and Lockyer

Answer 352

Rutherford

Answer 353

Large atomic size

Answer 354

Metallic properties

Answer 355

Strongly bond valence electrons

Answer 356

Small ionic size

Answer 357

NH₃ + H₂CO₃ → NH₄HCO₃

Answer 358

CO₃ + H₂O → H₂CO₃

Answer 359

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer 360

2NaOH + CO₂ → Na₂CO₃ + H₂O

Answer 361

Absorbs moisture and remain solid

Answer 362

Absorbs moisture and turn into liquid

Answer 363

Loses water of crystallization

Answer 364

Increases the water of crystallization

Answer 365

Heat of hydration

Answer 366

Ionization potential

Answer 367

Heat of dissociation

Answer 368

Electron affinity

Answer 369

Sodium silicate and lead silicate

Answer 370

Sodium silicate and calcium silicate

Answer 371

Sodium silicate and aluminum borosilicate

Answer 372

Sodium borosilicate and aluminum borosilicate

Answer 373

Coordinate

Answer 374

High ionization potential

Answer 375

Large size

Answer 376

Low electron affinity

Answer 377

Low ionization potential

Answer 378

Nitric oxide

Answer 379

Dinitrogen tetraoxide

Answer 380

Nitrogen dioxide

Answer 381

Nitrous oxide

Answer 382

Plaster of Paris

Answer 383

Epsom salt

Answer 384

Sodium hydride

Answer 385

Sodium amide

Answer 386

Sodium azide

Answer 387

Sodium nitride

Answer 388

They have high electron affinity and ionization energy

Answer 389

All are non-metals

Answer 390

All the halogens have electronic configuration ns2P5

Answer 391

All the halogens react with noble gases to form their halides

Answer 392

Refrigerant

Answer 393

Insecticide

Answer 394

None of these

Answer 395

H₂B₄O₇

Answer 396

They are all diatomic and form univalent ions

Answer 397

They are all diatomic and form divalent ions

Answer 398

They are all capable of exhibiting several oxidation states

Answer 399

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

Answer 400

Chlorine and oxygen over hot silver chlorate

Answer 401

Perchloric acid (CHIO₄) over hot silver oxide

Answer 402

Hydrogen chloride over phosphorus pentoxide

Answer 403

Chlorine gas over hot HgO

Answer 404

Cloth printing

Answer 405

Leather printing

Answer 406

Glass printing

Answer 407

Paper printing

Answer 408

The first ionization energy

Answer 409

The basic character of the oxides

Answer 410

The stability of +2 oxidation state

Answer 411

Ionic character of the compound

Answer 412

It restricts to oxidation state – 1 only

Answer 413

It has highest electronegativity

Answer 414

It has highest first ionization energy

Answer 415

It is more reactive than other halogens

Answer 416

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

Answer 417

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

Answer 418

Ozone is more reactive than dioxygen

Answer 419

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 420

Hypochlorous acid

Answer 421

Calcium oxide

Answer 422

Reducing agents

Answer 423

Drying agents

Answer 424

Oxidizing as well as reducing agents

Answer 425

Oxidizing agents

Answer 426

It is a gas at room temperature

Answer 427

It has oxidation state of +4

Answer 428

It forms RX₂

Answer 429

It forms R₂O₃

Answer 430

Tetrahedral

Answer 431

Metalloids

Answer 432

Radioactive

Answer 433

Non-metals

Answer 434

Polymorphic

Answer 435

Increase in resistance with increase in temperature

Answer 436

Different resistance under different circumstance

Answer 437

Decrease in resistance with increase in temperature

Answer 438

Decease in resistance with intensity of light

Answer 439

Phosphorus

Answer 440

None of these

Answer 441

Ionic and gas

Answer 442

Covalent and liquid

Answer 443

Ionic and liquid

Answer 444

Of the oxidation of H₂S gas by some acid radicals

Answer 445

Sulphur is present in the mixture as impurity

Answer 446

IV group radicals are precipitated as sulphides

Answer 447

III group radicals are precipitated as hydroxides

Answer 448

Solvay process of sodium carbonate

Answer 449

Ordinary (soda lime) glass

Answer 450

Phosphorus from phosphorite

Answer 451

Iron from haematite

Answer 452

Solvated electrons

Answer 453

Sodium hydride

Answer 454

Sodium amide

Answer 455

Sodium atoms

Answer 456

Hydration of Li⁺ ion

Answer 457

Extremely high electropositivity of Li

Answer 458

Greater hardness of Li

Answer 459

Small size of lithium atom and Li⁺ ion

Answer 460

Manganese dioxide

Answer 461

Potassium chlorate

Answer 462

Mercuric oxide

Answer 463

Lead nitrate

Answer 464

Atomic radius

Answer 465

Ionization energy

Answer 466

Boiling point

Answer 467

Radish brown

Answer 468

Colourless

Answer 469

Bluish green

Answer 470

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

Answer 471

They contain only one electron in their outermost shell

Answer 472

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

Answer 473

Their ionization potential is less than that of other elements

Answer 474

Effective nuclear charge increases

Answer 475

Additive electrons are accommodated in new electron level

Answer 476

Atomic number increases

Answer 477

Atomic mass increases

Answer 478

Sulphur dioxide

Answer 479

Carbon dioxide

Answer 480

In form of foil for wrapping

Answer 481

As an abrasive in the form of abundum

Answer 482

As an oxidizer in metallurgy

Answer 483

For preparing artificial

Answer 484

Alkali metals

Answer 485

Transition elements

Answer 486

High ∆H lattice

Answer 487

Small ionic size of Li⁺

Answer 488

High covalent nature

Answer 489

Low ∆H lattice

Answer 490

Castner Kellner cell

Answer 491

Castner cell

Answer 492

Down’s cell

Answer 493

Solvay process

Answer 494

It has metallic bond

Answer 495

Its molecule has a large size

Answer 496

It possess hydrogen bonding

Answer 497

It is highly electronegative

Answer 498

Borosilicate glass

Answer 499

Soda glass

Answer 500

Flint glass

Answer 501

Crooke’s glass

Answer 502

None of these

Answer 503

Iodine is a solid

Answer 504

Cl₂ is more insoluble in water

Answer 505

Br is more reactive than Cl₂

Answer 506

None of these

Answer 507

There is a regular gradation of properties from top to bottom

Answer 508

Whole group consist of non-metals

Answer 509

Marked change of properties

Answer 510

Abrupt change of properties

Answer 511

Solvated electrons

Answer 512

Sodium atoms

Answer 513

Sodium hydride

Answer 514

Sodium amide

Answer 515

Solid solution

Answer 516

Cage compound

Answer 517

Liquid crystal

Answer 518

Nitrogen family

Answer 519

Alkali metals

Answer 520

Oxygen family

Answer 521

Single free atoms

Answer 522

Diatomic molecules

Answer 523

Triatomic molecules

Answer 524

Atoms linked by weak bonds

Answer 525

Oxidizing agents

Answer 526

Reducing agents

Answer 527

Hydrolyzing agents

Answer 528

Both oxidizing and reducing agents

Answer 529

-2, +2, +6

Answer 530

+2, +4, +6

Answer 531

It is a strong reducing agent

Answer 532

It is more electropositive than sodium

Answer 533

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 534

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

Answer 535

Sodium bicarbonate

Answer 536

Calcium oxide

Answer 537

Calcium carbonate

Answer 538

Sodium carbonate

Answer 539

None of these

Answer 540

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

Answer 541

There is no change in the nuclear charge

Answer 542

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

Answer 543

B > N > C > O

Answer 544

O > C > B > N

Answer 545

O > B > C > N

Answer 546

O > C > N > B

Answer 547

Chalcopyrites

Answer 548

Br > Cl > F

Answer 549

F > Br > Cl

Answer 550

Cl > F > Br

Answer 551

F > Cl > Br

Answer 552

Higher co-ordination can be achieved by Al

Answer 553

It cannot form a trimer

Answer 554

Al has high ionization energy

Answer 555

Al belongs to third group

Answer 556

Magnesium and chlorine

Answer 557

Magnesium only

Answer 558

Potassium and magnesium

Answer 559

Potassium only

Answer 560

Energy dissociation

Answer 561

High atomic number

Answer 562

Electron affinity

Answer 563

Hydration energy

Answer 564

Keeping it cool

Answer 565

Hydrating sand and gravel mixed with cement

Answer 566

Converting sand into silici acid

Answer 567

Developing interlocking needle like crystals of hydrated silicates

Answer 568

High ionization energy

Answer 569

Their ions are isoelectronic with noble gases

Answer 570

Low electronegativity

Answer 571

Low melting point

Answer 572

Has the largest size

Answer 573

Has the lowest ionization enthalpy

Answer 574

In the most readily available gas

Answer 575

Has the highest heat of vaporization

Answer 576

The ratio of their charge to size is nearly the same

Answer 577

Both are found together in nature

Answer 578

Both have nearly the same size

Answer 579

Both have similar electronic configurations

Answer 580

Prismatic sulphur

Answer 581

Plastic sulphur

Answer 582

Rhombic sulphur

Answer 583

Monoclinic sulphur

Answer 584

Highest boiling points

Answer 585

Smaller ionic radii

Answer 586

Lower ionization energies

Answer 587

Greater hardness

Answer 588

Nuclear charge

Answer 589

Atomic number

Answer 590

Atomic size and nuclear charge both

Answer 591

Atomic size

Answer 592

It absorbs moisture

Answer 593

It changes into CaCl₂ and Ca(OH)₂

Answer 594

It change into calcium hypochlorate

Answer 595

It changes into calcium chloride and calcium chlorate

Answer 596

It oxidizes potassium iodide

Answer 597

It cannot act as a bleaching agent

Answer 598

It oxidizes mercury

Answer 599

It oxidizes lead sulphides

Answer 600

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Answer 601

Some nitrogen molecules analogous to O₂

Answer 602

It has highest first I.E

Answer 603

It is more reactive than other halogens

Answer 604

It has highest E.N

Answer 605

It restricts to oxidation state – 1 only

Answer 606

White phosphorus

Answer 607

Red phosphorus

Answer 608

Violet phosphorus

Answer 609

Scarlet phosphorus

Answer 610

Ca₃(PO₄)₂

Answer 611

Iron oxide

Answer 612

Bauxite is less impure

Answer 613

Bauxite is available in large quantity

Answer 614

Of easy extraction of Al from it

Answer 615

Bauxite contains maximum of Al

Answer 616

Lattice energy

Answer 617

Ionization energy

Answer 618

Hydration energy

Answer 619

Electron affinity

Answer 620

There is special arrangement is cell to keep the layers separate

Answer 621

Three layers have different densities

Answer 622

Three layers are maintained at different temperatures

Answer 623

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

Answer 624

Inner transition elements

Answer 625

Transition elements

Answer 626

Representative elements

Answer 627

Short internuclear distance

Answer 628

Absence of bond polarity

Answer 629

Multiple bond formation in the molecule

Answer 630

High bond energy

Answer 631

Ar is used in electric bulbs

Answer 632

Ne is obtained during radioactive disintegration

Answer 633

Half-life of Rn is only 3-8 days

Answer 634

HE is used in producing very low temperatures

Answer 635

Linear acidic

Answer 636

Angular, disc

Answer 637

Tetrahedral, acidic

Answer 638

Linear, basic

Answer 639

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

Answer 640

Show increasing electro negativity from Li to Cs.

Answer 641

Form salt like hydrides

Answer 642

Form salts which are predominantly covalent

Answer 643

Variation is not regular

Answer 644

Remains unchanged

Answer 645

Decreases down the group

Answer 646

Increases down the group

Answer 647

I₂ > Br₂ > Cl₂ > F₂

Answer 648

F₂ > Cl₂ > Br₂ > I₂

Answer 649

Cl₂ > Br₂ > I₂ > F₂

Answer 650

Br₂ > Cl₂ > F₂ > I₂

Answer 651

With alkali metals

Answer 652

With inert gases

Answer 653

None of these

Answer 654

With halogens

Total Questions:	330
Time Allowed:	80 Minutes
Total Marks:	330
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

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

Chemistry The Halogens and Noble Gases Online Mcqs Test

Important Chemistry The Halogens and Noble Gases Question and Answer

Chemistry The Halogens and Noble Gases Practice Test Online With Explanation

Chemistry

How to Score High in Chemistry The Halogens and Noble Gases Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Malik Tahir

2 Comments

Leave a Reply Cancel reply

Important Chemistry The Halogens and Noble Gases Question and Answer

Chemistry The Halogens and Noble Gases Practice Test Online With Explanation

Chemistry

How to Score High in Chemistry The Halogens and Noble Gases Online Mcqs Test?

Key Preparation Tips:

More Related Resources

Latest Updates

Malik Tahir

2 Comments

Leave a Reply Cancel reply