Chemistry The Halogens and Noble Gases Online Mcqs Test

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Question 1

1. The important ore of lead is

Answer

Chalcopyrites

Question 2

2. Mark the smallest atom

Question 3

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

Question 4

4. Which of the following oxides is peroxide?

Question 5

5. Beryllium is placed above magnesium in the second group. Beryllium dust, therefore, when added to MgCl₂ solution will

Answer

Have no effect

Answer

Precipitate Mg metal

Answer

Precipitate Mg

Answer

Leads to the dissolution of beryllium metal

Question 6

6. Which one boric acid is stable one?

Answer

H₂B₄O₇

Answer

None of these

Question 7

7. Which is the strongest acid?

Question 8

8. Point out the correct equation which represents the strong action of heat on calcium nitrate.

Question 9

9. Permonosulphuric acid is known as

Answer

None of these

Answer

Sulphuric acid

Answer

Carlo’s acid

Answer

Marshall’s acid

Question 10

10. In which of the following groups, when he is placed, its all properties are satisfied?

Answer

With inert gases

Answer

None of these

Answer

With halogens

Answer

With alkali metals

Question 11

11. Electron affinity depends on

Answer

Atomic size and nuclear charge both

Answer

Atomic size

Answer

Nuclear charge

Answer

Atomic number

Question 12

12. In which form boron exist mostly in nature

Answer

Oxyborates

Question 13

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

Answer

Weak acid and strong base

Answer

Weak acid and weak base

Answer

Strong acid and strong base

Answer

Strong acid and weak base

Question 14

14. The process associated with sodium carbonate manufacture is known as

Question 15

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

Question 16

16. The correct order of electron affinity of B, C, N, O is

Answer

B > N > C > O

Answer

O > B > C > N

Answer

O > C > B > N

Answer

O > C > N > B

Question 17

17. Which of the following is an inert gas?

Question 18

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

Answer

Small size of fluorine

Answer

More electro negativity of fluorine

Answer

Non-metallic nature of fluorine

Answer

More electron repulsion in fluorine

Question 19

19. Which of the following statements is not correct for a noble gas?

Answer

Ar is used in electric bulbs

Answer

Half-life of Rn is only 3-8 days

Answer

Ne is obtained during radioactive disintegration

Answer

HE is used in producing very low temperatures

Question 20

20. Which of the following has greatest reducing power?

Question 21

21. Calcium is obtained by

Answer

Electrolysis of molten anhydrous or fused calcium chloride

Answer

Electrolysis of solution of calcium chloride in water

Answer

Roasting lime stone

Answer

Reduction of calcium chloride with carbon

Question 22

22. Which of the following isoelectronic ions has the lowest ionization energy?

Question 23

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

Answer

It decreases gradually down the group

Answer

It increases gradually down the group

Answer

None of these

Answer

Noble gases have o heat of vapourization

Question 24

24. Bond angle is minimum for

Question 25

25. Variable valency is characteristic of

Answer

Transition elements

Answer

Alkali metals

Question 26

26. All halogen are

Answer

Reducing agents

Answer

Drying agents

Answer

Oxidizing as well as reducing agents

Answer

Oxidizing agents

Question 27

27. The halogen which has only one oxidation state is

Question 28

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

Answer

Highest boiling points

Answer

Smaller ionic radii

Answer

Greater hardness

Answer

Lower ionization energies

Question 29

29. The metal with highest electrical resistance at room temperature is

Question 30

30. The correct sequence of elements in the decreasing order of first ionization energy is

Answer

Al > Mg > Na > Si

Answer

Si > Mg > Al > Na

Answer

Na > Mg > Al > Si

Answer

Mg > Na > Al > Si

Question 31

31. The colour of I₂ in CCI₄ is

Answer

Colourless

Answer

Radish brown

Answer

Bluish green

Question 32

32. The last orbit of argon would have electrons

Question 33

33. Plaster of Paris is used

Answer

In metallurgical process

Answer

As a drying agent

Answer

In dentistry and surgery

Answer

As a plaster for walls

Question 34

34. Which noble gas is used in infilament bulbs to stop the filament burning out too quickly?

Question 35

35. I₂ is solid at room temperature because

Answer

It is highly electronegative

Answer

It possess hydrogen bonding

Answer

It has metallic bond

Answer

Its molecule has a large size

Question 36

36. The acid which has a peroxy linkage is

Answer

Pyrosulphuric acid

Answer

Sulphurous acid

Answer

Dithionic acid

Answer

Carlo’s acid

Question 37

37. Solution of sodium metal in liquid ammonia in strongly reducing due to the presence in the solution of the following

Answer

Sodium amide

Answer

Solvated electrons

Answer

Sodium hydride

Answer

Sodium atoms

Question 38

38. A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of

Answer

Sodium amide

Answer

Solvated electrons

Answer

Sodium atoms

Answer

Sodium hydride

Question 39

39. Nitrolim is

Answer

Ca(CN)₂ + C

Answer

CaC₂ + C

Answer

CaCN₂ + C

Question 40

40. Identify the correct statement

Answer

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

Answer

Elemental Na is insoluble in NH₃

Answer

Elemental Na is easily oxidized

Answer

Elemental Na is a strong oxidizing agent

Question 41

41. Pyrex glass is a mixture of

Answer

Sodium silicate and aluminum borosilicate

Answer

Sodium silicate and calcium silicate

Answer

Sodium borosilicate and aluminum borosilicate

Answer

Sodium silicate and lead silicate

Question 42

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

Answer

None of these

Question 43

43. The spectrum of helium is expected to be similar to that of

Question 44

44. Presence of which of the following salt increases the rate of setting of plaster of Paris.

Question 45

45. The atomic numbers of four elements are given below. Which one is an alkaline earth metal?

Question 46

46. Elements of which of the following groups will from anions most readily?

Answer

Alkali metals

Answer

Nitrogen family

Answer

Oxygen family

Question 47

47. Neon glows in discharge tube as

Question 48

48. What is the order of power of halogen as an oxidizing agent?

Answer

I₂>F₂>Br₂>U₂

Answer

U₂>Br₂>I₂>F₂

Answer

F₂>Cl₂>Br₂>I2

Answer

I₂>Br₂>U₂>F₂

Question 49

49. Which of the following sets of atomic numbers belong to that of the alkali metals?

Answer

12, 20, 56, 88

Answer

37, 19, 3, 55

Answer

9, 17, 35, 53

Answer

1, 12, 30, 4, 62

Question 50

50. Which halogen has application in medicines mostly?

Question 51

51. The noble gas He was discovered by

Answer

Frank land and Lockyer

Answer

Rutherford

Question 52

52. Which molecule has a coordinate covalent bond in its structure?

Question 53

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

Question 54

54. Aluminum (III) chloride forms a dimer because

Answer

Al belongs to third group

Answer

Higher co-ordination can be achieved by Al

Answer

It cannot form a trimer

Answer

Al has high ionization energy

Question 55

55. Number of elements present in 5th period is

Question 56

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

Answer

Sodiums sulphates

Answer

Sodium sulphides

Answer

Sodium persulphate

Answer

Sodium thiosulphate

Question 57

57. The metal used for making radiation shield is

Question 58

58. Common oxidation state of boron are

Question 59

59. All the elements of oxygen family are

Answer

Polymorphic

Answer

Non-metals

Answer

Radioactive

Answer

Metalloids

Question 60

60. Which of the following on heating at 125°C gives plaster of Paris?

Question 61

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

Answer

Soda glass

Answer

Borosilicate glass

Answer

Crooke’s glass

Answer

Flint glass

Question 62

62. Deliquescence is a process in which a solid

Answer

Absorbs moisture and remain solid

Answer

Increases the water of crystallization

Answer

Loses water of crystallization

Answer

Absorbs moisture and turn into liquid

Question 63

63. Which of the noble gas has highest polarizabilities?

Question 64

64. The ionization potential is lowest for the

Answer

Inert gases

Answer

Alkaline earth metals

Answer

Alkali metals

Answer 130

Mixture of argon and oxygen

Answer 131

Mixture of xenon and nitrogen

Answer 132

Mixture of neon and oxygen

Answer 133

Mixture of helium and oxygen

Answer 134

Hydration energies of cations

Answer 135

Entropy of solution formation

Answer 136

Lattice energies if solids

Answer 137

Inter ionic attraction

Answer 138

Effective nuclear charge increases

Answer 139

Additive electrons are accommodated in new electron level

Answer 140

Atomic number increases

Answer 141

Atomic mass increases

Answer 142

None of these

Answer 143

Iodine is a solid

Answer 144

Cl₂ is more insoluble in water

Answer 145

Br is more reactive than Cl₂

Answer 146

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

Answer 147

Alkali metals have ns’ configuring in outermost shells

Answer 148

Alkali metals do not reacts with metals

Answer 149

Alkali metal atom has the smallest size in its period

Answer 150

Nitrogen dioxide

Answer 151

Nitrous oxide

Answer 152

Dinitrogen tetraoxide

Answer 153

Nitric oxide

Answer 154

Lose 2 electrons

Answer 155

Lose 3 electrons

Answer 156

Gain 3 electrons

Answer 157

Gain 2 electrons

Answer 158

nS₂, nP₆

Answer 159

ns₂, nP₅

Answer 160

nS₂, nP₃

Answer 161

NS₂, nP₄

Answer 162

Iron oxide

Answer 163

Reducing agent

Answer 164

All the three

Answer 165

Oxidizing agent

Answer 166

Sodium hydride

Answer 167

Sodium azide

Answer 168

Sodium amide

Answer 169

Sodium nitride

Answer 170

None of these

Answer 171

Electro negativity

Answer 172

Atomic radius

Answer 173

Ionization energy

Answer 174

Reduction methods

Answer 175

Displacement methods

Answer 176

Double decomposition methods

Answer 177

Electrolytic methods

Answer 178

Li₂CO₃ is soluble in water

Answer 179

Carbonates of Ca, Ba, Sr are soluble in water

Answer 180

Basic carbonates of Mg and Cu are soluble in water

Answer 181

Carbonates of Na, K, NH₄ are soluble in water

Answer 182

They are all diatomic and form divalent ions

Answer 183

They are all capable of exhibiting several oxidation states

Answer 184

They are all diatomic and form univalent ions

Answer 185

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

Answer 186

Chloride ion

Answer 187

Fluoride ion

Answer 188

Nitride ion

Answer 189

Sodium ion

Answer 190

Variable trend

Answer 191

Highly soluble in water

Answer 192

Insoluble in water

Answer 193

Less soluble in water

Answer 194

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

Answer 195

Ozone is more reactive than dioxygen

Answer 196

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 197

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

Answer 198

Decrease in resistance with increase in temperature

Answer 199

Increase in resistance with increase in temperature

Answer 200

Decease in resistance with intensity of light

Answer 201

Different resistance under different circumstance

Answer 202

Transition elements

Answer 203

Inner transition elements

Answer 204

Representative elements

Answer 205

Phosphorus pentoxidse

Answer 206

Active charcoal

Answer 207

Na₃PO₄

Answer 208

Anhydrous calcium chloride

Answer 209

Abrupt change of properties

Answer 210

Marked change of properties

Answer 211

There is a regular gradation of properties from top to bottom

Answer 212

Whole group consist of non-metals

Answer 213

Chlorination

Answer 214

Hydrogenation

Answer 215

Both oxidized and reduced

Answer 216

Common salt

Answer 217

Carnallite

Answer 218

Refrigerant

Answer 219

Insecticide

Answer 220

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

Answer 221

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

Answer 222

Their ionization potential is less than that of other elements

Answer 223

They contain only one electron in their outermost shell

Answer 224

Plaster of Pairs can be obtained by partial oxidation of gypsum

Answer 225

Gypsum contains a lower percentage of calcium than plaster of pairs

Answer 226

Gypsum is obtained by heating plaster of pairs

Answer 227

Plaster of Paris is obtained by partial oxidation of gypsum

Answer 228

Hypo phosphorous acid

Answer 229

Hypo phosphoric acid

Answer 230

Orthophosphoric acid

Answer 231

Phosphorous acid

Answer 232

Cannot be predicted

Answer 233

Diatomic molecules

Answer 234

Monoatomic molecules

Answer 235

Various forms

Answer 236

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 237

It is a strong reducing agent

Answer 238

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

Answer 239

It is more electropositive than sodium

Answer 240

The lattice energy of BaSO₄ is more than its hydration energy

Answer 241

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer 242

The lattice energy has no role to play in solubility

Answer 243

Both a and b

Answer 244

Lead nitrate

Answer 245

Potassium chlorate

Answer 246

Manganese dioxide

Answer 247

Mercuric oxide

Answer 248

It has highest E.N

Answer 249

It restricts to oxidation state – 1 only

Answer 250

It is more reactive than other halogens

Answer 251

It has highest first I.E

Answer 252

Dissolving out unreacted silver bromide

Answer 253

Converting silver halides to metallic silver

Answer 254

Reducing solubility of AgBr

Answer 255

Preventing overdeveloping and fogging

Answer 256

Polyatomic

Answer 257

Monoatomic

Answer 258

All of these

Answer 259

Increases down the group

Answer 260

Decreases down the group

Answer 261

Remains unchanged

Answer 262

Variation is not regular

Answer 263

Solid solution

Answer 264

Liquid crystal

Answer 265

Cage compound

Answer 266

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

Answer 267

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

Answer 268

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

Answer 269

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

Answer 270

H. bonding

Answer 271

Dipole-dipole forces

Answer 272

None of these

Answer 273

Strongest vanderwaal’s force

Answer 274

Scarlet phosphorus

Answer 275

White phosphorus

Answer 276

Violet phosphorus

Answer 277

Red phosphorus

Answer 278

Kl has high m.p.

Answer 279

Lattice energy of CaO is much higher than that of Kl

Answer 280

Kl is soluble in benzene

Answer 281

CaO has high m.p.

Answer 282

Electron affinity

Answer 283

Heat of hydration

Answer 284

Heat of dissociation

Answer 285

Ionization potential

Answer 286

Thionyl chloride

Answer 287

Sulphur tetrachloride

Answer 288

Sulphur monochloride

Answer 289

Sulphuryl chloride

Answer 290

Hydration energy of ion

Answer 291

Electron affinity

Answer 292

High atomic number

Answer 293

Energy dissociation

Answer 294

Phosphorus trichloride

Answer 295

Hyponitrous acid

Answer 296

Nitrosyl chloride

Answer 297

Nitrogen trichloride

Answer 298

CaSO₄. 3H₂O

Answer 299

CaSO₄.2H₂O

Answer 300

CaSO₄. 1/2H₂O

Answer 301

Boiling point

Answer 302

Ionization energy

Answer 303

Atomic radius

Answer 304

O₂ and Ar

Answer 305

CO₂ and Ar

Answer 306

O₂ and CO₂

Answer 307

O₂ and He

Answer 308

Al₂(OH)₄

Answer 309

Na₂Al(OH)₄

Answer 310

Na₃AlO₃

Answer 311

Both are found together in nature

Answer 312

The ratio of their charge to size is nearly the same

Answer 313

Both have similar electronic configurations

Answer 314

Both have nearly the same size

Answer 315

Noble gases

Answer 316

Light metals

Answer 317

Heavy metals

Answer 318

Metaphosphoric acid

Answer 319

Orthophosphoric acid

Answer 320

Hypo phosphorous acid

Answer 321

Pyro phosphoric acid

Answer 322

Three layers are maintained at different temperatures

Answer 323

There is special arrangement is cell to keep the layers separate

Answer 324

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

Answer 325

Three layers have different densities

Answer 326

Expense, but a very uncreative gas

Answer 327

Lighter than air and cheap to produce

Answer 328

Less dense then air and not flammable

Answer 329

Expensive but easy to store in cylinder

Answer 330

Cannot be predicted

Answer 331

Ionic character of the compound

Answer 332

The first ionization energy

Answer 333

The basic character of the oxides

Answer 334

The stability of +2 oxidation state

Answer 335

Has the largest size

Answer 336

Has the highest heat of vaporization

Answer 337

In the most readily available gas

Answer 338

Has the lowest ionization enthalpy

Answer 339

It has highest first ionization energy

Answer 340

It has highest electronegativity

Answer 341

It restricts to oxidation state – 1 only

Answer 342

It is more reactive than other halogens

Answer 343

Tetrahedral

Answer 344

None of these

Answer 345

Distorted octahedral

Answer 346

Iron and sulphur

Answer 347

Proton and silicon

Answer 348

Aluminum and silicon

Answer 349

Gallium and Germanium

Answer 350

Show increasing electro negativity from Li to Cs.

Answer 351

Form salts which are predominantly covalent

Answer 352

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

Answer 353

Form salt like hydrides

Answer 354

Iodine solution

Answer 355

Br₂ > Cl₂ > F₂ > I₂

Answer 356

Cl₂ > Br₂ > I₂ > F₂

Answer 357

F₂ > Cl₂ > Br₂ > I₂

Answer 358

I₂ > Br₂ > Cl₂ > F₂

Answer 359

Tri-calcium silicate

Answer 360

Diclacium silicate

Answer 361

Tri-calcium aluminate

Answer 362

Tetra calcium aluminoferrite

Answer 363

Carbon dioxide

Answer 364

Sulphur dioxide

Answer 365

Coordinate

Answer 366

Inter – ionic attraction

Answer 367

Hydration energies of cations

Answer 368

Lattice energy solids

Answer 369

Entropy of solution formation

Answer 370

Calcium oxide

Answer 371

Hypochlorous acid

Answer 372

A carbonate

Answer 373

A sulphate

Answer 374

F > Cl > Br

Answer 375

F > Br > Cl

Answer 376

Cl > F > Br

Answer 377

Br > Cl > F

Answer 378

Nitrogen is much less soluble in blood than helium

Answer 379

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

Answer 380

Nitrogen is highly soluble in water

Answer 381

Helium is much less soluble in blood than nitrogen

Answer 382

Removing impurities of calcium and magnesium form water

Answer 383

Simple distillation of water

Answer 384

Dissolving heavy salt in water

Answer 385

Prolonged electrolysis of water

Answer 386

Atomic mass

Answer 387

Isotopic number

Answer 388

Atomic number

Answer 389

Mass number

Answer 390

Decrease in I.P

Answer 391

Decrease in electronegativity of the elements

Answer 392

All of these

Answer 393

Increase in atomic size of elements

Answer 394

None of these

Answer 395

To prevent the action of water and salt

Answer 396

Prevent puncturing by under sea rock

Answer 397

Mark the ship lighter

Answer 398

Keep away the sharks

Answer 399

Chlorophyll

Answer 400

Haemoglobin

Answer 401

Large size

Answer 402

High ionization potential

Answer 403

Low ionization potential

Answer 404

Low electron affinity

Answer 405

None of these

Answer 406

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

Answer 407

Noble gases are all dense gases

Answer 408

Noble gases will all burn in pure oxygen

Answer 409

Tetrabasic

Answer 410

Perchloric acid (CHIO₄) over hot silver oxide

Answer 411

Hydrogen chloride over phosphorus pentoxide

Answer 412

Chlorine gas over hot HgO

Answer 413

Chlorine and oxygen over hot silver chlorate

Answer 414

In the atmosphere

Answer 415

As salts in ponds

Answer 416

Sp³d²-hybridisation

Answer 417

Sp²-hybridisation

Answer 418

Sp-hybridisation

Answer 419

Sp³- hybridization

Answer 420

Chromous chloride

Answer 421

Chromic chloride

Answer 422

Chromyl chloride

Answer 423

HCl is formed in moist air

Answer 424

It is highly hygroscopic

Answer 425

It is very volatile

Answer 426

It is covalent

Answer 427

Ca₃(PO₄)₂

Answer 428

Presence of NH₃

Answer 429

Reaction with CO₂

Answer 430

Reaction with NaOH

Answer 431

Reaction with brine solution

Answer 432

Ionic and liquid

Answer 433

Covalent and liquid

Answer 434

None of these

Answer 435

Ionic and gas

Answer 436

Strong oxidizing agents

Answer 437

Weak reducing agents

Answer 438

Weak oxidizing agents

Answer 439

Strong reducing agents

Answer 440

High energies of hydration of M²⁺ in solution

Answer 441

None of these of M²⁺ ions

Answer 442

Diamagnetic nature

Answer 443

High lattice energy of M²⁺ ions in the solid state

Answer 444

Magnesium reacts with cold water and liberates hydrogen

Answer 445

Sodium reduces CO₂ to carbon

Answer 446

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

Answer 447

Magnallium is one alloy of Mg and zinc

Answer 448

Ca and CO₂

Answer 449

‘Li’ has a great tendency to form hydrates

Answer 450

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

Answer 451

‘Li’ is not effected by air

Answer 452

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 453

Converting sand into silici acid

Answer 454

Developing interlocking needle like crystals of hydrated silicates

Answer 455

Hydrating sand and gravel mixed with cement

Answer 456

Keeping it cool

Answer 457

Cloth printing

Answer 458

Leather printing

Answer 459

Glass printing

Answer 460

Paper printing

Answer 461

It reacts with chlorine gas

Answer 462

It corrodes the organic tissues

Answer 463

It reacts with fats to form soap

Answer 464

It is used in soda water

Answer 465

Ferrous ammonium sulphate

Answer 466

Magnesium sulphates

Answer 467

Calcium sulphates

Answer 468

Magnesium ammonium phosphate

Answer 469

Electron deficiency

Answer 470

Acidic nature

Answer 471

Covalent nature

Answer 472

Ionization property

Answer 473

Hydration energy

Answer 474

Ionization energy

Answer 475

Electron affinity

Answer 476

Lattice energy

Answer 477

Higher I-P

Answer 478

Large size

Answer 479

Zero electron affinity

Answer 480

Acid decomposes water

Answer 481

It decomposes the acid

Answer 482

It hydrolyses the acid

Answer 483

Acid forms hydrates with water

Answer 484

Low electronegativity

Answer 485

Low charge density

Answer 486

Lower electro positivity

Answer 487

Their ions are isoelectronic with noble gases

Answer 488

High ionization energy

Answer 489

Low melting point

Answer 490

Low electronegativity

Answer 491

As an oxidizer in metallurgy

Answer 492

In form of foil for wrapping

Answer 493

For preparing artificial

Answer 494

As an abrasive in the form of abundum

Answer 495

High dissociation energy

Answer 496

Low first ionization energy

Answer 497

Small size

Answer 498

Castner Kellner cell

Answer 499

Solvay process

Answer 500

Castner cell

Answer 501

Down’s cell

Answer 502

Low ∆H lattice

Answer 503

High covalent nature

Answer 504

Small ionic size of Li⁺

Answer 505

High ∆H lattice

Answer 506

To increase Al production

Answer 507

To protect the anodes

Answer 508

To act as reducing agent

Answer 509

To make a conducting solution of bauxite

Answer 510

Tetrahedral

Answer 511

HF is the weakest acid

Answer 512

Fluorine atom is smaller in size

Answer 513

Fluorine is highly reactive

Answer 514

HF molecules form intermolecular H-bonds

Answer 515

Hydration of Li⁺ ion

Answer 516

Extremely high electropositivity of Li

Answer 517

Greater hardness of Li

Answer 518

Small size of lithium atom and Li⁺ ion

Answer 519

Magnesium and chlorine

Answer 520

Potassium only

Answer 521

Potassium and magnesium

Answer 522

Magnesium only

Answer 523

NH₃ + H₂CO₃ → NH₄HCO₃

Answer 524

CO₃ + H₂O → H₂CO₃

Answer 525

2NaOH + CO₂ → Na₂CO₃ + H₂O

Answer 526

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer 527

Bauxite is available in large quantity

Answer 528

Bauxite is less impure

Answer 529

Bauxite contains maximum of Al

Answer 530

Of easy extraction of Al from it

Answer 531

p-orbitals

Answer 532

s-orbitals

Answer 533

d-orbitals

Answer 534

They have high electron affinity and ionization energy

Answer 535

All the halogens react with noble gases to form their halides

Answer 536

All are non-metals

Answer 537

All the halogens have electronic configuration ns2P5

Answer 538

Phosphorus

Answer 539

-2, +2, +6

Answer 540

+2, +4, +6

Answer 541

Of localized electrons in it

Answer 542

Borazole is polar compound

Answer 543

Borazole is nonpolar compound

Answer 544

Borazole is electron deficient compound

Answer 545

Reducing agents

Answer 546

Oxidizing agents

Answer 547

Hydrolyzing agents

Answer 548

Both oxidizing and reducing agents

Answer 549

It oxidizes mercury

Answer 550

It oxidizes potassium iodide

Answer 551

It cannot act as a bleaching agent

Answer 552

It oxidizes lead sulphides

Answer 553

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

Answer 554

Melting and boiling points of alkali metals decrease down the group

Answer 555

Ionic character of alkali metal halides decreases down the group

Answer 556

Sodium is the most abundant metallic element in sea water

Answer 557

Epsom salt

Answer 558

Plaster of Paris

Answer 559

Diatomic molecules

Answer 560

Atoms linked by weak bonds

Answer 561

Single free atoms

Answer 562

Triatomic molecules

Answer 563

Rhombic sulphur

Answer 564

Monoclinic sulphur

Answer 565

Prismatic sulphur

Answer 566

Plastic sulphur

Answer 567

Solvay process of sodium carbonate

Answer 568

Phosphorus from phosphorite

Answer 569

Iron from haematite

Answer 570

Ordinary (soda lime) glass

Answer 571

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Answer 572

Some nitrogen molecules analogous to O₂

Answer 573

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

Answer 574

There is no change in the nuclear charge

Answer 575

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

Answer 576

None of these

Answer 577

Strongly bond valence electrons

Answer 578

Large atomic size

Answer 579

Metallic properties

Answer 580

Small ionic size

Answer 581

Linear, basic

Answer 582

Tetrahedral, acidic

Answer 583

Angular, disc

Answer 584

Linear acidic

Answer 585

The fixation of picture

Answer 586

Developing picture

Answer 587

The colour of picture

Answer 588

Picture printed

Answer 589

It forms R₂O₃

Answer 590

It has oxidation state of +4

Answer 591

It is a gas at room temperature

Answer 592

It forms RX₂

Answer 593

More than O and Se

Answer 594

Less than O but more than SE

Answer 595

More than O but less than Se

Answer 596

Equal to O and Se

Answer 597

Gaseous nature

Answer 598

Weak van der Waals forces between atoms

Answer 599

High polarisability

Answer 600

Free molecules

Answer 601

Free electrons

Answer 602

Atoms of sodium and chlorine

Answer 603

Atomic radius

Answer 604

Ionization energy

Answer 605

Boiling point

Answer 606

Antiferromagnetic

Answer 607

Paramagnetic

Answer 608

Ferromagnetic

Answer 609

Diamagnetic

Answer 610

Atomic numbers

Answer 611

Atomic masses

Answer 612

Nuclear masses

Answer 613

Nuclear neutron-proton number rations

Answer 614

It absorbs moisture

Answer 615

It changes into calcium chloride and calcium chlorate

Answer 616

It changes into CaCl₂ and Ca(OH)₂

Answer 617

It change into calcium hypochlorate

Answer 618

Absence of bond polarity

Answer 619

Short internuclear distance

Answer 620

High bond energy

Answer 621

Multiple bond formation in the molecule

Answer 622

Electron affinity of chlorine is greater than that of fluorine

Answer 623

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer 624

Fluorine does not form oxoacid

Answer 625

Bond energy of fluorine is less than that of chlorine

Answer 626

It is used as fire proof in textile

Answer 627

It is as filter for soap

Answer 628

It is used in the formation white cement

Answer 629

It is used furniture polish

Answer 630

Calcried gypsum

Answer 631

A marble states

Answer 632

Sea shells

Answer 633

Electron affinity

Answer 634

Energy dissociation

Answer 635

High atomic number

Answer 636

Hydration energy

Answer 637

Frank land

Answer 638

J.J Thomson

Answer 639

The reaction is quite slow

Answer 640

The reaction is highly exothermic

Answer 641

SO₃ is insoluble in H₂O

Answer 642

The reaction does not go to completion

Answer 643

Electro negativity

Answer 644

First ionization energy

Answer 645

Melting point

Answer 646

Ionic radius

Answer 647

Sulphur is present in the mixture as impurity

Answer 648

IV group radicals are precipitated as sulphides

Answer 649

III group radicals are precipitated as hydroxides

Answer 650

Of the oxidation of H₂S gas by some acid radicals

Answer 651

Sodium bicarbonate

Answer 652

Calcium carbonate

Answer 653

Calcium oxide

Answer 654

Sodium carbonate

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

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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:

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