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

Answer

Calcium oxide

Answer

Sodium bicarbonate

Answer

Calcium carbonate

Answer

Sodium carbonate

Question 2

2. Which of the following statements is incorrect?

Answer

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

Answer

Ionic character of alkali metal halides decreases down the group

Answer

Sodium is the most abundant metallic element in sea water

Answer

Melting and boiling points of alkali metals decrease down the group

Question 3

3. SO3 is not dissolve directly in H2O because

Answer

The reaction is quite slow

Answer

The reaction is highly exothermic

Answer

The reaction does not go to completion

Answer

SO₃ is insoluble in H₂O

Question 4

4. Orthophosphoric acid is

Answer

Tetrabasic

Question 5

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

Question 6

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

Question 7

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

Question 8

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

Question 9

9. Which of the following is most electronegative?

Question 10

10. Mark the correct statement

Answer

Iodine is a solid

Answer

Br is more reactive than Cl₂

Answer

None of these

Answer

Cl₂ is more insoluble in water

Question 11

11. Aluminum (III) chloride forms a dimer because

Answer

It cannot form a trimer

Answer

Al has high ionization energy

Answer

Higher co-ordination can be achieved by Al

Answer

Al belongs to third group

Question 12

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

Answer

Strong acid and strong base

Answer

Weak acid and weak base

Answer

Weak acid and strong base

Answer

Strong acid and weak base

Question 13

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

Question 14

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

Answer

Variable trend

Answer

Insoluble in water

Answer

Less soluble in water

Answer

Highly soluble in water

Question 15

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

Answer

None of these

Question 16

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

Question 17

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

Answer

Tetrahedral, acidic

Answer

Angular, disc

Answer

Linear acidic

Answer

Linear, basic

Question 18

18. Neon glows in discharge tube as

Question 19

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

Answer

None of these

Question 20

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

Answer

Hydrating sand and gravel mixed with cement

Answer

Keeping it cool

Answer

Developing interlocking needle like crystals of hydrated silicates

Answer

Converting sand into silici acid

Question 21

21. 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?

Question 22

22. The bleaching action of chlorine is due to

Answer

Chlorination

Answer

Hydrogenation

Question 23

23. Heavy water is obtained by

Answer

Dissolving heavy salt in water

Answer

Simple distillation of water

Answer

Removing impurities of calcium and magnesium form water

Answer

Prolonged electrolysis of water

Question 24

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

Answer

Of easy extraction of Al from it

Answer

Bauxite contains maximum of Al

Answer

Bauxite is available in large quantity

Answer

Bauxite is less impure

Question 25

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

Answer

As salts in ponds

Answer

In the atmosphere

Question 26

26. The shape of gaseous SnCl₂ is

Answer

Tetrahedral

Question 27

27. The noble gases consist of

Answer

Diatomic molecules

Answer

Atoms linked by weak bonds

Answer

Triatomic molecules

Answer

Single free atoms

Question 28

28. Who reported first noble gas?

Answer

Frank land

Answer

J.J Thomson

Question 29

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

Question 30

30. Mark the nitrate which decomposes differently on heating

Question 31

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

Answer

Hydration energies of cations

Answer

Lattice energy solids

Answer

Inter – ionic attraction

Answer

Entropy of solution formation

Question 32

32. Which shows maximum catenation property?

Question 33

33. Alkaline earth metals comes under

Answer

Inner transition elements

Answer

Representative elements

Answer

Transition elements

Question 34

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

Answer

Lower ionization energies

Answer

Highest boiling points

Answer

Smaller ionic radii

Answer

Greater hardness

Question 35

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

Answer

Light metals

Answer

Noble gases

Answer

Heavy metals

Question 36

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

Question 37

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

Question 38

38. XeF₄ on partial hydrolysis produces

Question 39

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

Question 40

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

Answer

Small ionic size

Answer

Strongly bond valence electrons

Answer

Large atomic size

Answer

Metallic properties

Question 41

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

Answer

Electron affinity

Answer

Heat of dissociation

Answer

Heat of hydration

Answer

Ionization potential

Question 42

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

Question 43

43. The ionization potential is lowest for the

Answer

Alkali metals

Answer

Alkaline earth metals

Answer

Inert gases

Question 44

44. HNO₂ acts as an/a

Answer

Reducing agent

Answer

All the three

Answer

Oxidizing agent

Question 45

45. Which of the following has greatest reducing power?

Question 46

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

Question 47

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

Question 48

48. Which of the following is most volatile?

Question 49

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

Answer

Energy dissociation

Answer

Hydration energy of ion

Answer

Electron affinity

Answer

High atomic number

Question 50

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

Question 51

51. 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

Question 52

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

Answer

There is no change in the nuclear charge

Answer

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

Answer

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

Answer

None of these

Question 53

53. Bromine is obtained on a commercial scale from

Answer

Common salt

Answer

Carnallite

Question 54

54. The halogen that is most easily reduced is

Question 55

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

Answer

Both have nearly the same size

Answer

Both have similar electronic configurations

Answer

The ratio of their charge to size is nearly the same

Answer

Both are found together in nature

Question 56

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

Answer

Nitrosyl chloride

Answer

Nitrogen trichloride

Answer

Hyponitrous acid

Answer

Phosphorus trichloride

Question 57

57. Sea weeds are important source of

Question 58

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

Answer

Crooke’s glass

Answer

Flint glass

Answer

Borosilicate glass

Answer

Soda glass

Question 59

59. Hypo is used in photography for

Answer

Developing picture

Answer

The colour of picture

Answer

Picture printed

Answer

The fixation of picture

Question 60

60. The halogen having highest electron affinity is

Question 61

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

Question 62

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

Answer

Lead nitrate

Answer

Potassium chlorate

Answer

Manganese dioxide

Answer

Mercuric oxide

Question 63

63. Identify the correct statement

Answer

Gypsum contains a lower percentage of calcium than plaster of pairs

Answer

Gypsum is obtained by heating plaster of pairs

Answer

Plaster of Pairs can be obtained by partial oxidation of gypsum

Answer

Plaster of Paris is obtained by partial oxidation of gypsum

Question 64

64. Which of the following phosphorus is most reactive?

Answer

Red phosphorus

Answer

Violet phosphorus

Answer

Scarlet phosphorus

Answer

White phosphorus

Answer 125

Weak van der Waals forces between atoms

Answer 126

High polarisability

Answer 127

Gaseous nature

Answer 128

A carbonate

Answer 129

A sulphate

Answer 130

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

Answer 131

Helium is much less soluble in blood than nitrogen

Answer 132

Nitrogen is much less soluble in blood than helium

Answer 133

Nitrogen is highly soluble in water

Answer 134

None of these

Answer 135

Ionic and gas

Answer 136

Covalent and liquid

Answer 137

Ionic and liquid

Answer 138

Chalcopyrites

Answer 139

Kl has high m.p.

Answer 140

Kl is soluble in benzene

Answer 141

Lattice energy of CaO is much higher than that of Kl

Answer 142

CaO has high m.p.

Answer 143

Perchloric acid (CHIO₄) over hot silver oxide

Answer 144

Chlorine and oxygen over hot silver chlorate

Answer 145

Chlorine gas over hot HgO

Answer 146

Hydrogen chloride over phosphorus pentoxide

Answer 147

Polymorphic

Answer 148

Radioactive

Answer 149

Non-metals

Answer 150

Metalloids

Answer 151

Ca₃(PO₄)₂

Answer 152

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

Answer 153

Show increasing electro negativity from Li to Cs.

Answer 154

Form salts which are predominantly covalent

Answer 155

Form salt like hydrides

Answer 156

Elemental Na is insoluble in NH₃

Answer 157

Elemental Na is a strong oxidizing agent

Answer 158

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

Answer 159

Elemental Na is easily oxidized

Answer 160

Epsom salt

Answer 161

Plaster of Paris

Answer 162

High energies of hydration of M²⁺ in solution

Answer 163

None of these of M²⁺ ions

Answer 164

Diamagnetic nature

Answer 165

High lattice energy of M²⁺ ions in the solid state

Answer 166

With alkali metals

Answer 167

None of these

Answer 168

With halogens

Answer 169

With inert gases

Answer 170

Small size

Answer 171

Low first ionization energy

Answer 172

High dissociation energy

Answer 173

Magnesium only

Answer 174

Potassium and magnesium

Answer 175

Potassium only

Answer 176

Magnesium and chlorine

Answer 177

Sodium thiosulphate

Answer 178

Sodium sulphides

Answer 179

Sodiums sulphates

Answer 180

Sodium persulphate

Answer 181

Oxygen family

Answer 182

Nitrogen family

Answer 183

Alkali metals

Answer 184

Half-life of Rn is only 3-8 days

Answer 185

Ne is obtained during radioactive disintegration

Answer 186

HE is used in producing very low temperatures

Answer 187

Ar is used in electric bulbs

Answer 188

Sp-hybridisation

Answer 189

Sp³- hybridization

Answer 190

Sp³d²-hybridisation

Answer 191

Sp²-hybridisation

Answer 192

Sulphur dioxide

Answer 193

Carbon dioxide

Answer 194

More than O and Se

Answer 195

More than O but less than Se

Answer 196

Less than O but more than SE

Answer 197

Equal to O and Se

Answer 198

Atomic radius

Answer 199

Ionization energy

Answer 200

Electro negativity

Answer 201

The lattice energy has no role to play in solubility

Answer 202

The lattice energy of BaSO₄ is more than its hydration energy

Answer 203

Both a and b

Answer 204

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer 205

Absorbs moisture and turn into liquid

Answer 206

Loses water of crystallization

Answer 207

Absorbs moisture and remain solid

Answer 208

Increases the water of crystallization

Answer 209

Lower electro positivity

Answer 210

Low electronegativity

Answer 211

Low charge density

Answer 212

Prismatic sulphur

Answer 213

Plastic sulphur

Answer 214

Monoclinic sulphur

Answer 215

Rhombic sulphur

Answer 216

Calcium oxide

Answer 217

Hypochlorous acid

Answer 218

+2, +4, +6

Answer 219

-2, +2, +6

Answer 220

Na > Mg > Al > Si

Answer 221

Mg > Na > Al > Si

Answer 222

Si > Mg > Al > Na

Answer 223

Al > Mg > Na > Si

Answer 224

Iron and sulphur

Answer 225

Aluminum and silicon

Answer 226

Gallium and Germanium

Answer 227

Proton and silicon

Answer 228

Hypo phosphorous acid

Answer 229

Orthophosphoric acid

Answer 230

Hypo phosphoric acid

Answer 231

Phosphorous acid

Answer 232

Melting point

Answer 233

Electro negativity

Answer 234

Ionic radius

Answer 235

First ionization energy

Answer 236

All of these

Answer 237

Monoatomic

Answer 238

Polyatomic

Answer 239

High atomic number

Answer 240

Electron affinity

Answer 241

Hydration energy

Answer 242

Energy dissociation

Answer 243

H. bonding

Answer 244

Dipole-dipole forces

Answer 245

Strongest vanderwaal’s force

Answer 246

None of these

Answer 247

A marble states

Answer 248

Calcried gypsum

Answer 249

Sea shells

Answer 250

Bluish green

Answer 251

Radish brown

Answer 252

Colourless

Answer 253

Sodium borosilicate and aluminum borosilicate

Answer 254

Sodium silicate and lead silicate

Answer 255

Sodium silicate and aluminum borosilicate

Answer 256

Sodium silicate and calcium silicate

Answer 257

All the halogens have electronic configuration ns2P5

Answer 258

They have high electron affinity and ionization energy

Answer 259

All are non-metals

Answer 260

All the halogens react with noble gases to form their halides

Answer 261

CaSO₄. 1/2H₂O

Answer 262

CaSO₄. 3H₂O

Answer 263

CaSO₄.2H₂O

Answer 264

Variation is not regular

Answer 265

Remains unchanged

Answer 266

Decreases down the group

Answer 267

Increases down the group

Answer 268

Atoms of sodium and chlorine

Answer 269

Free molecules

Answer 270

Free electrons

Answer 271

Strong oxidizing agents

Answer 272

Strong reducing agents

Answer 273

Weak reducing agents

Answer 274

Weak oxidizing agents

Answer 275

Alkali metals

Answer 276

Transition elements

Answer 277

Atomic size and nuclear charge both

Answer 278

Atomic number

Answer 279

Nuclear charge

Answer 280

Atomic size

Answer 281

I₂>Br₂>U₂>F₂

Answer 282

I₂>F₂>Br₂>U₂

Answer 283

U₂>Br₂>I₂>F₂

Answer 284

F₂>Cl₂>Br₂>I2

Answer 285

Ca(CN)₂ + C

Answer 286

CaC₂ + C

Answer 287

CaCN₂ + C

Answer 288

Cl₂ > Br₂ > I₂ > F₂

Answer 289

F₂ > Cl₂ > Br₂ > I₂

Answer 290

Br₂ > Cl₂ > F₂ > I₂

Answer 291

I₂ > Br₂ > Cl₂ > F₂

Answer 292

Effective nuclear charge increases

Answer 293

Additive electrons are accommodated in new electron level

Answer 294

Atomic mass increases

Answer 295

Atomic number increases

Answer 296

Liquid crystal

Answer 297

Solid solution

Answer 298

Cage compound

Answer 299

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

Answer 300

None of these

Answer 301

Noble gases are all dense gases

Answer 302

Noble gases will all burn in pure oxygen

Answer 303

nS₂, nP₃

Answer 304

NS₂, nP₄

Answer 305

nS₂, nP₆

Answer 306

ns₂, nP₅

Answer 307

Large size

Answer 308

Higher I-P

Answer 309

Zero electron affinity

Answer 310

Decease in resistance with intensity of light

Answer 311

Decrease in resistance with increase in temperature

Answer 312

Different resistance under different circumstance

Answer 313

Increase in resistance with increase in temperature

Answer 314

Both oxidized and reduced

Answer 315

Leather printing

Answer 316

Glass printing

Answer 317

Paper printing

Answer 318

Cloth printing

Answer 319

Displacement methods

Answer 320

Double decomposition methods

Answer 321

Electrolytic methods

Answer 322

Reduction methods

Answer 323

As a plaster for walls

Answer 324

As a drying agent

Answer 325

In dentistry and surgery

Answer 326

In metallurgical process

Answer 327

None of these

Answer 328

Sodium reduces CO₂ to carbon

Answer 329

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

Answer 330

Magnesium reacts with cold water and liberates hydrogen

Answer 331

Magnallium is one alloy of Mg and zinc

Answer 332

Hydration energies of cations

Answer 333

Entropy of solution formation

Answer 334

Lattice energies if solids

Answer 335

Inter ionic attraction

Answer 336

For preparing artificial

Answer 337

In form of foil for wrapping

Answer 338

As an oxidizer in metallurgy

Answer 339

As an abrasive in the form of abundum

Answer 340

Hydrolyzing agents

Answer 341

Oxidizing agents

Answer 342

Both oxidizing and reducing agents

Answer 343

Reducing agents

Answer 344

Solvated electrons

Answer 345

Sodium amide

Answer 346

Sodium hydride

Answer 347

Sodium atoms

Answer 348

F > Br > Cl

Answer 349

Cl > F > Br

Answer 350

Br > Cl > F

Answer 351

F > Cl > Br

Answer 352

It has highest electronegativity

Answer 353

It is more reactive than other halogens

Answer 354

It has highest first ionization energy

Answer 355

It restricts to oxidation state – 1 only

Answer 356

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

Answer 357

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

Answer 358

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

Answer 359

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

Answer 360

Carlo’s acid

Answer 361

None of these

Answer 362

Marshall’s acid

Answer 363

Sulphuric acid

Answer 364

High covalent nature

Answer 365

High ∆H lattice

Answer 366

Small ionic size of Li⁺

Answer 367

Low ∆H lattice

Answer 368

Iron oxide

Answer 369

1, 12, 30, 4, 62

Answer 370

37, 19, 3, 55

Answer 371

12, 20, 56, 88

Answer 372

9, 17, 35, 53

Answer 373

Low ionization potential

Answer 374

Large size

Answer 375

Low electron affinity

Answer 376

High ionization potential

Answer 377

Sulphur monochloride

Answer 378

Sulphuryl chloride

Answer 379

Thionyl chloride

Answer 380

Sulphur tetrachloride

Answer 381

Oxyborates

Answer 382

Alkali metal atom has the smallest size in its period

Answer 383

Alkali metals do not reacts with metals

Answer 384

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

Answer 385

Alkali metals have ns’ configuring in outermost shells

Answer 386

HF is the weakest acid

Answer 387

HF molecules form intermolecular H-bonds

Answer 388

Fluorine is highly reactive

Answer 389

Fluorine atom is smaller in size

Answer 390

None of these

Answer 391

H₂B₄O₇

Answer 392

Lattice energy

Answer 393

Hydration energy

Answer 394

Ionization energy

Answer 395

Electron affinity

Answer 396

Reaction with NaOH

Answer 397

Presence of NH₃

Answer 398

Reaction with CO₂

Answer 399

Reaction with brine solution

Answer 400

Short internuclear distance

Answer 401

High bond energy

Answer 402

Multiple bond formation in the molecule

Answer 403

Absence of bond polarity

Answer 404

It is a strong reducing agent

Answer 405

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 406

It is more electropositive than sodium

Answer 407

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

Answer 408

Cannot be predicted

Answer 409

Oxidizing as well as reducing agents

Answer 410

Oxidizing agents

Answer 411

Reducing agents

Answer 412

Drying agents

Answer 413

It reacts with fats to form soap

Answer 414

It corrodes the organic tissues

Answer 415

It reacts with chlorine gas

Answer 416

It is used in soda water

Answer 417

It has oxidation state of +4

Answer 418

It forms RX₂

Answer 419

It is a gas at room temperature

Answer 420

It forms R₂O₃

Answer 421

Refrigerant

Answer 422

Insecticide

Answer 423

It is as filter for soap

Answer 424

It is used in the formation white cement

Answer 425

It is used as fire proof in textile

Answer 426

It is used furniture polish

Answer 427

Have no effect

Answer 428

Leads to the dissolution of beryllium metal

Answer 429

Precipitate Mg

Answer 430

Precipitate Mg metal

Answer 431

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

Answer 432

Their ionization potential is less than that of other elements

Answer 433

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

Answer 434

They contain only one electron in their outermost shell

Answer 435

Nitrous oxide

Answer 436

Dinitrogen tetraoxide

Answer 437

Nitric oxide

Answer 438

Nitrogen dioxide

Answer 439

Its molecule has a large size

Answer 440

It is highly electronegative

Answer 441

It has metallic bond

Answer 442

It possess hydrogen bonding

Answer 443

Boiling point

Answer 444

Ionization energy

Answer 445

Atomic radius

Answer 446

Carbonates of Ca, Ba, Sr are soluble in water

Answer 447

Li₂CO₃ is soluble in water

Answer 448

Basic carbonates of Mg and Cu are soluble in water

Answer 449

Carbonates of Na, K, NH₄ are soluble in water

Answer 450

Nuclear neutron-proton number rations

Answer 451

Atomic masses

Answer 452

Atomic numbers

Answer 453

Nuclear masses

Answer 454

Coordinate

Answer 455

The first ionization energy

Answer 456

Ionic character of the compound

Answer 457

The stability of +2 oxidation state

Answer 458

The basic character of the oxides

Answer 459

Diamagnetic

Answer 460

Antiferromagnetic

Answer 461

Ferromagnetic

Answer 462

Paramagnetic

Answer 463

Sodium ion

Answer 464

Nitride ion

Answer 465

Chloride ion

Answer 466

Fluoride ion

Answer 467

Tri-calcium aluminate

Answer 468

Tetra calcium aluminoferrite

Answer 469

Diclacium silicate

Answer 470

Tri-calcium silicate

Answer 471

Al₂(OH)₄

Answer 472

Na₂Al(OH)₄

Answer 473

Na₃AlO₃

Answer 474

Low melting point

Answer 475

Their ions are isoelectronic with noble gases

Answer 476

High ionization energy

Answer 477

Low electronegativity

Answer 478

Ozone is more reactive than dioxygen

Answer 479

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

Answer 480

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 481

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

Answer 482

It hydrolyses the acid

Answer 483

It decomposes the acid

Answer 484

Acid decomposes water

Answer 485

Acid forms hydrates with water

Answer 486

Calcium sulphates

Answer 487

Magnesium ammonium phosphate

Answer 488

Ferrous ammonium sulphate

Answer 489

Magnesium sulphates

Answer 490

It cannot act as a bleaching agent

Answer 491

It oxidizes potassium iodide

Answer 492

It oxidizes lead sulphides

Answer 493

It oxidizes mercury

Answer 494

Converting silver halides to metallic silver

Answer 495

Preventing overdeveloping and fogging

Answer 496

Dissolving out unreacted silver bromide

Answer 497

Reducing solubility of AgBr

Answer 498

O > C > N > B

Answer 499

O > B > C > N

Answer 500

B > N > C > O

Answer 501

O > C > B > N

Answer 502

To act as reducing agent

Answer 503

To protect the anodes

Answer 504

To increase Al production

Answer 505

To make a conducting solution of bauxite

Answer 506

Three layers are maintained at different temperatures

Answer 507

Three layers have different densities

Answer 508

There is special arrangement is cell to keep the layers separate

Answer 509

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

Answer 510

Iodine solution

Answer 511

Down’s cell

Answer 512

Castner Kellner cell

Answer 513

Castner cell

Answer 514

Solvay process

Answer 515

Mixture of argon and oxygen

Answer 516

Mixture of helium and oxygen

Answer 517

Mixture of xenon and nitrogen

Answer 518

Mixture of neon and oxygen

Answer 519

Gain 3 electrons

Answer 520

Gain 2 electrons

Answer 521

Lose 3 electrons

Answer 522

Lose 2 electrons

Answer 523

Acidic nature

Answer 524

Ionization property

Answer 525

Covalent nature

Answer 526

Electron deficiency

Answer 527

‘Li’ has a great tendency to form hydrates

Answer 528

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

Answer 529

‘Li’ is not effected by air

Answer 530

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 531

Pyro phosphoric acid

Answer 532

Hypo phosphorous acid

Answer 533

Metaphosphoric acid

Answer 534

Orthophosphoric acid

Answer 535

Chromous chloride

Answer 536

Chromyl chloride

Answer 537

Chromic chloride

Answer 538

Noble gases have o heat of vapourization

Answer 539

None of these

Answer 540

It decreases gradually down the group

Answer 541

It increases gradually down the group

Answer 542

Has the largest size

Answer 543

Has the lowest ionization enthalpy

Answer 544

Has the highest heat of vaporization

Answer 545

In the most readily available gas

Answer 546

Carlo’s acid

Answer 547

Pyrosulphuric acid

Answer 548

Dithionic acid

Answer 549

Sulphurous acid

Answer 550

Electrolysis of solution of calcium chloride in water

Answer 551

Electrolysis of molten anhydrous or fused calcium chloride

Answer 552

Roasting lime stone

Answer 553

Reduction of calcium chloride with carbon

Answer 554

d-orbitals

Answer 555

s-orbitals

Answer 556

p-orbitals

Answer 557

Frank land and Lockyer

Answer 558

Rutherford

Answer 559

Haemoglobin

Answer 560

Chlorophyll

Answer 561

Sodium hydride

Answer 562

Sodium nitride

Answer 563

Sodium amide

Answer 564

Sodium azide

Answer 565

Mark the ship lighter

Answer 566

Prevent puncturing by under sea rock

Answer 567

To prevent the action of water and salt

Answer 568

Keep away the sharks

Answer 569

It is very volatile

Answer 570

HCl is formed in moist air

Answer 571

It is highly hygroscopic

Answer 572

It is covalent

Answer 573

Tetrahedral

Answer 574

None of these

Answer 575

Distorted octahedral

Answer 576

Less dense then air and not flammable

Answer 577

Lighter than air and cheap to produce

Answer 578

Expensive but easy to store in cylinder

Answer 579

Expense, but a very uncreative gas

Answer 580

Phosphorus

Answer 581

There is a regular gradation of properties from top to bottom

Answer 582

Abrupt change of properties

Answer 583

Marked change of properties

Answer 584

Whole group consist of non-metals

Answer 585

It restricts to oxidation state – 1 only

Answer 586

It has highest first I.E

Answer 587

It has highest E.N

Answer 588

It is more reactive than other halogens

Answer 589

Phosphorus pentoxidse

Answer 590

Na₃PO₄

Answer 591

Active charcoal

Answer 592

Anhydrous calcium chloride

Answer 593

NH₃ + H₂CO₃ → NH₄HCO₃

Answer 594

CO₃ + H₂O → H₂CO₃

Answer 595

2NaOH + CO₂ → Na₂CO₃ + H₂O

Answer 596

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer 597

Boiling point

Answer 598

Atomic radius

Answer 599

Ionization energy

Answer 600

It change into calcium hypochlorate

Answer 601

It changes into calcium chloride and calcium chlorate

Answer 602

It changes into CaCl₂ and Ca(OH)₂

Answer 603

It absorbs moisture

Answer 604

Some nitrogen molecules analogous to O₂

Answer 605

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Answer 606

IV group radicals are precipitated as sulphides

Answer 607

Of the oxidation of H₂S gas by some acid radicals

Answer 608

III group radicals are precipitated as hydroxides

Answer 609

Sulphur is present in the mixture as impurity

Answer 610

Isotopic number

Answer 611

Atomic number

Answer 612

Atomic mass

Answer 613

Mass number

Answer 614

All of these

Answer 615

Increase in atomic size of elements

Answer 616

Decrease in electronegativity of the elements

Answer 617

Decrease in I.P

Answer 618

O₂ and He

Answer 619

CO₂ and Ar

Answer 620

O₂ and Ar

Answer 621

O₂ and CO₂

Answer 622

Ca and CO₂

Answer 623

Borazole is nonpolar compound

Answer 624

Borazole is electron deficient compound

Answer 625

Of localized electrons in it

Answer 626

Borazole is polar compound

Answer 627

Greater hardness of Li

Answer 628

Small size of lithium atom and Li⁺ ion

Answer 629

Extremely high electropositivity of Li

Answer 630

Hydration of Li⁺ ion

Answer 631

Cannot be predicted

Answer 632

Diatomic molecules

Answer 633

Monoatomic molecules

Answer 634

Various forms

Answer 635

Sodium amide

Answer 636

Sodium atoms

Answer 637

Sodium hydride

Answer 638

Solvated electrons

Answer 639

Phosphorus from phosphorite

Answer 640

Ordinary (soda lime) glass

Answer 641

Solvay process of sodium carbonate

Answer 642

Iron from haematite

Answer 643

Fluorine does not form oxoacid

Answer 644

Bond energy of fluorine is less than that of chlorine

Answer 645

Electron affinity of chlorine is greater than that of fluorine

Answer 646

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer 647

They are all diatomic and form univalent ions

Answer 648

They are all capable of exhibiting several oxidation states

Answer 649

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

Answer 650

They are all diatomic and form divalent ions

Answer 651

More electro negativity of fluorine

Answer 652

More electron repulsion in fluorine

Answer 653

Small size of fluorine

Answer 654

Non-metallic nature of fluorine

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