Chemistry The Halogens and Noble Gases Online Mcqs Test

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Question 1

1. The metal used for making radiation shield is

Question 2

2. The noble gas He was discovered by

Answer

Frank land and Lockyer

Answer

Rutherford

Question 3

3. Identify the correct statement

Answer

Plaster of Pairs can be 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 Paris is obtained by partial oxidation of gypsum

Question 4

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

Question 5

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

Answer

The ratio of their charge to size is nearly the same

Answer

Both have similar electronic configurations

Answer

Both are found together in nature

Answer

Both have nearly the same size

Question 6

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

Answer

Angular, disc

Answer

Tetrahedral, acidic

Answer

Linear acidic

Answer

Linear, basic

Question 7

7. Which noble gas is used earth quake prediction?

Question 8

8. Which one is the weakest oxyacid of chlorine?

Question 9

9. Two elements whose electro negativities are 1.2 and 3.0, the bond formed between them would be

Answer

Coordinate

Question 10

10. On heating sodium metal in a current of dry ammonia, the compound formed is

Answer

Sodium amide

Answer

Sodium nitride

Answer

Sodium hydride

Answer

Sodium azide

Question 11

11. Hydrochloric acid at 25°C is

Answer

Ionic and liquid

Answer

Ionic and gas

Answer

None of these

Answer

Covalent and liquid

Question 12

12. Which oxide of nitrogen is obtained on heating ammonium nitrate at 250°C?

Answer

Nitrogen dioxide

Answer

Dinitrogen tetraoxide

Answer

Nitrous oxide

Answer

Nitric oxide

Question 13

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

Question 14

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

Answer

Strong acid and strong base

Answer

Strong acid and weak base

Answer

Weak acid and weak base

Answer

Weak acid and strong base

Question 15

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

Question 16

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

Question 17

17. XeF₄ on partial hydrolysis produces

Question 18

18. Which halogen is most electropositive?

Question 19

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

Answer

Ionization potential

Answer

Electron affinity

Answer

Heat of dissociation

Answer

Heat of hydration

Question 20

20. Mark the element which shows greatness inert pair effect

Question 21

21. The compounds of alkaline earth metals have the following magnetic nature

Answer

Antiferromagnetic

Answer

Ferromagnetic

Answer

Diamagnetic

Answer

Paramagnetic

Question 22

22. Bromine is obtained on a commercial scale from

Answer

Carnallite

Answer

Common salt

Question 23

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

Answer

With alkali metals

Answer

With inert gases

Answer

None of these

Answer

With halogens

Question 24

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

Answer

Large atomic size

Answer

Strongly bond valence electrons

Answer

Small ionic size

Answer

Metallic properties

Question 25

25. 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 26

26. The percentage of lead in lead pencil is

Question 27

27. Vander Waals forces are stronger in

Question 28

28. Electron affinity depends on

Answer

Atomic size and nuclear charge both

Answer

Atomic size

Answer

Nuclear charge

Answer

Atomic number

Question 29

29. The metal extracted by electrolysis of its fused salt is

Question 30

30. Point out the property which is not characteristic of alkali metals

Answer

Low melting point

Answer

Their ions are isoelectronic with noble gases

Answer

High ionization energy

Answer

Low electronegativity

Question 31

31. Which of the following alkaline earth metals is the strongest reducing agent?

Question 32

32. Bleaching powder reacts with a few drops of conc. HCl to give

Answer

Calcium oxide

Answer

Hypochlorous acid

Question 33

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

Question 34

34. The number of electrons that are paired in oxygen molecule are

Question 35

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

Answer

Small size of fluorine

Answer

Non-metallic nature of fluorine

Answer

More electro negativity of fluorine

Answer

More electron repulsion in fluorine

Question 36

36. Which of the following halogen does not exhibit positive oxidation state in its compounds?

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 hydride

Answer

Solvated electrons

Answer

Sodium amide

Answer

Sodium atoms

Question 38

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

Question 39

39. Mark the incorrect statement about the conductance semi-conductors in photoelectric cells and solar batteries. Semi conductors show

Answer

Decrease in resistance with increase in temperature

Answer

Different resistance under different circumstance

Answer

Decease in resistance with intensity of light

Answer

Increase in resistance with increase in temperature

Question 40

40. Action of caustic soda on aluminum hydroxide gives a compound having formula

Answer

Na₂Al(OH)₄

Answer

Al₂(OH)₄

Answer

Na₃AlO₃

Question 41

41. Several blocks of magnesium are fixed to the bottom of a ship to

Answer

Keep away the sharks

Answer

Prevent puncturing by under sea rock

Answer

Mark the ship lighter

Answer

To prevent the action of water and salt

Question 42

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

Question 43

43. The one which does not show variable valency is

Question 44

44. Hypo is used in photography for

Answer

Picture printed

Answer

The fixation of picture

Answer

The colour of picture

Answer

Developing picture

Question 45

45. The increase of Van der Waal’s forces in halogens is in the order of

Answer

Cl₂ > Br₂ > I₂ > F₂

Answer

I₂ > Br₂ > Cl₂ > F₂

Answer

Br₂ > Cl₂ > F₂ > I₂

Answer

F₂ > Cl₂ > Br₂ > I₂

Question 46

46. In the fractional distillation of liquid air, the gas that boils off last is

Question 47

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

Answer

Boiling point

Answer

Atomic radius

Answer

Ionization energy

Question 48

48. Indicate the correct statement

Answer

Alkali metals have ns’ configuring in outermost shells

Answer

Alkali metals do not reacts with metals

Answer

Alkali metal atom has the smallest size in its period

Answer

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

Question 49

49. Plaster of Paris is used

Answer

In dentistry and surgery

Answer

As a plaster for walls

Answer

In metallurgical process

Answer

As a drying agent

Question 50

50. Permonosulphuric acid is known as

Answer

Carlo’s acid

Answer

Marshall’s acid

Answer

None of these

Answer

Sulphuric acid

Question 51

51. Which of the following will liberate hydrogen by its reaction with hydrochloric acid?

Answer

Phosphorus

Question 52

52. Alkali metals displace hydrogen from water forming bases due to the reason that

Answer

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

Answer

They contain only one electron in their outermost shell

Answer

Their ionization potential is less than that of other elements

Answer

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

Question 53

53. In Solvay ammonia process, sodium bicarbonate is precipitated due to

Answer

Presence of NH₃

Answer

Reaction with CO₂

Answer

Reaction with brine solution

Answer

Reaction with NaOH

Question 54

54. Which one has highest electron affinity?

Question 55

55. What causes nitrogen to be chemically inert?

Answer

High bond energy

Answer

Multiple bond formation in the molecule

Answer

Short internuclear distance

Answer

Absence of bond polarity

Question 56

56. An atom with high electro negativity has

Answer

High ionization potential

Answer

Large size

Answer

Low electron affinity

Answer

Low ionization potential

Question 57

57. In the modern long form of the periodic table, elements are arranged in the increasing order of

Answer

Mass number

Answer

Atomic number

Answer

Atomic mass

Answer

Isotopic number

Question 58

58. Which gives green colour in fireworks?

Question 59

59. Which statement is correct?

Answer

None of these

Answer

Noble gases are all dense gases

Answer

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

Answer

Noble gases will all burn in pure oxygen

Question 60

60. Identify the correct statement

Answer

Elemental Na is easily oxidized

Answer

Elemental Na is insoluble in NH₃

Answer

Elemental Na is a strong oxidizing agent

Answer

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

Question 61

61. Phosphide ion has the electronic structure similar to that of

Answer

Nitride ion

Answer

Fluoride ion

Answer

Chloride ion

Answer

Sodium ion

Question 62

62. Calcium is obtained by

Answer

Roasting lime stone

Answer

Electrolysis of solution of calcium chloride in water

Answer

Reduction of calcium chloride with carbon

Answer

Electrolysis of molten anhydrous or fused calcium chloride

Question 63

63. Which of the noble gas has highest polarizabilities?

Question 64

64. Which one of the following has highest electropositive character?

Answer 139

Tetrabasic

Answer 140

Tetra calcium aluminoferrite

Answer 141

Tri-calcium silicate

Answer 142

Tri-calcium aluminate

Answer 143

Diclacium silicate

Answer 144

Sp-hybridisation

Answer 145

Sp³- hybridization

Answer 146

Sp²-hybridisation

Answer 147

Sp³d²-hybridisation

Answer 148

None of these

Answer 149

Chlorination

Answer 150

Hydrogenation

Answer 151

Frank land

Answer 152

J.J Thomson

Answer 153

Absorbs moisture and remain solid

Answer 154

Loses water of crystallization

Answer 155

Absorbs moisture and turn into liquid

Answer 156

Increases the water of crystallization

Answer 157

CaCN₂ + C

Answer 158

CaC₂ + C

Answer 159

Ca(CN)₂ + C

Answer 160

Solvay process

Answer 161

Castner Kellner cell

Answer 162

Down’s cell

Answer 163

Castner cell

Answer 164

Sodium silicate and aluminum borosilicate

Answer 165

Sodium borosilicate and aluminum borosilicate

Answer 166

Sodium silicate and lead silicate

Answer 167

Sodium silicate and calcium silicate

Answer 168

Red phosphorus

Answer 169

Violet phosphorus

Answer 170

White phosphorus

Answer 171

Scarlet phosphorus

Answer 172

Both a and b

Answer 173

The lattice energy has no role to play in solubility

Answer 174

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer 175

The lattice energy of BaSO₄ is more than its hydration energy

Answer 176

It change into calcium hypochlorate

Answer 177

It absorbs moisture

Answer 178

It changes into calcium chloride and calcium chlorate

Answer 179

It changes into CaCl₂ and Ca(OH)₂

Answer 180

Weak reducing agents

Answer 181

Strong oxidizing agents

Answer 182

Weak oxidizing agents

Answer 183

Strong reducing agents

Answer 184

Has the lowest ionization enthalpy

Answer 185

Has the highest heat of vaporization

Answer 186

Has the largest size

Answer 187

In the most readily available gas

Answer 188

Colourless

Answer 189

Radish brown

Answer 190

Bluish green

Answer 191

Carbon dioxide

Answer 192

Sulphur dioxide

Answer 193

Potassium and magnesium

Answer 194

Potassium only

Answer 195

Magnesium only

Answer 196

Magnesium and chlorine

Answer 197

It oxidizes mercury

Answer 198

It oxidizes potassium iodide

Answer 199

It oxidizes lead sulphides

Answer 200

It cannot act as a bleaching agent

Answer 201

Ar is used in electric bulbs

Answer 202

HE is used in producing very low temperatures

Answer 203

Half-life of Rn is only 3-8 days

Answer 204

Ne is obtained during radioactive disintegration

Answer 205

Alkali metals

Answer 206

Transition elements

Answer 207

They have high electron affinity and ionization energy

Answer 208

All the halogens have electronic configuration ns2P5

Answer 209

All the halogens react with noble gases to form their halides

Answer 210

All are non-metals

Answer 211

Form salt like hydrides

Answer 212

Form salts which are predominantly covalent

Answer 213

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

Answer 214

Show increasing electro negativity from Li to Cs.

Answer 215

Pyrosulphuric acid

Answer 216

Sulphurous acid

Answer 217

Carlo’s acid

Answer 218

Dithionic acid

Answer 219

Double decomposition methods

Answer 220

Displacement methods

Answer 221

Electrolytic methods

Answer 222

Reduction methods

Answer 223

Both oxidizing and reducing agents

Answer 224

Reducing agents

Answer 225

Hydrolyzing agents

Answer 226

Oxidizing agents

Answer 227

Chromic chloride

Answer 228

Chromous chloride

Answer 229

Chromyl chloride

Answer 230

‘Li’ has a great tendency to form hydrates

Answer 231

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

Answer 232

‘Li’ is not effected by air

Answer 233

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 234

Both oxidized and reduced

Answer 235

Highly soluble in water

Answer 236

Variable trend

Answer 237

Less soluble in water

Answer 238

Insoluble in water

Answer 239

Decrease in electronegativity of the elements

Answer 240

Increase in atomic size of elements

Answer 241

Decrease in I.P

Answer 242

All of these

Answer 243

Hydration energy of ion

Answer 244

High atomic number

Answer 245

Energy dissociation

Answer 246

Electron affinity

Answer 247

Sulphuryl chloride

Answer 248

Sulphur monochloride

Answer 249

Thionyl chloride

Answer 250

Sulphur tetrachloride

Answer 251

First ionization energy

Answer 252

Ionic radius

Answer 253

Electro negativity

Answer 254

Melting point

Answer 255

Greater hardness

Answer 256

Lower ionization energies

Answer 257

Highest boiling points

Answer 258

Smaller ionic radii

Answer 259

12, 20, 56, 88

Answer 260

37, 19, 3, 55

Answer 261

9, 17, 35, 53

Answer 262

1, 12, 30, 4, 62

Answer 263

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

Answer 264

Ozone is more reactive than dioxygen

Answer 265

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

Answer 266

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 267

I₂>Br₂>U₂>F₂

Answer 268

F₂>Cl₂>Br₂>I2

Answer 269

I₂>F₂>Br₂>U₂

Answer 270

U₂>Br₂>I₂>F₂

Answer 271

Active charcoal

Answer 272

Na₃PO₄

Answer 273

Phosphorus pentoxidse

Answer 274

Anhydrous calcium chloride

Answer 275

Simple distillation of water

Answer 276

Prolonged electrolysis of water

Answer 277

Dissolving heavy salt in water

Answer 278

Removing impurities of calcium and magnesium form water

Answer 279

Precipitate Mg metal

Answer 280

Have no effect

Answer 281

Leads to the dissolution of beryllium metal

Answer 282

Precipitate Mg

Answer 283

2NaOH + CO₂ → Na₂CO₃ + H₂O

Answer 284

CO₃ + H₂O → H₂CO₃

Answer 285

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer 286

NH₃ + H₂CO₃ → NH₄HCO₃

Answer 287

Noble gases

Answer 288

Heavy metals

Answer 289

Light metals

Answer 290

Zero electron affinity

Answer 291

Large size

Answer 292

Higher I-P

Answer 293

Atomic radius

Answer 294

Ionization energy

Answer 295

Boiling point

Answer 296

O > C > N > B

Answer 297

O > C > B > N

Answer 298

O > B > C > N

Answer 299

B > N > C > O

Answer 300

It possess hydrogen bonding

Answer 301

It has metallic bond

Answer 302

It is highly electronegative

Answer 303

Its molecule has a large size

Answer 304

Iron oxide

Answer 305

F > Cl > Br

Answer 306

Cl > F > Br

Answer 307

Br > Cl > F

Answer 308

F > Br > Cl

Answer 309

It is a strong reducing agent

Answer 310

It is more electropositive than sodium

Answer 311

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

Answer 312

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 313

Chalcopyrites

Answer 314

There is a regular gradation of properties from top to bottom

Answer 315

Marked change of properties

Answer 316

Abrupt change of properties

Answer 317

Whole group consist of non-metals

Answer 318

Phosphorus trichloride

Answer 319

Nitrogen trichloride

Answer 320

Hyponitrous acid

Answer 321

Nitrosyl chloride

Answer 322

s-orbitals

Answer 323

d-orbitals

Answer 324

p-orbitals

Answer 325

Inner transition elements

Answer 326

Transition elements

Answer 327

Representative elements

Answer 328

Ca₃(PO₄)₂

Answer 329

Ca and CO₂

Answer 330

Developing interlocking needle like crystals of hydrated silicates

Answer 331

Converting sand into silici acid

Answer 332

Keeping it cool

Answer 333

Hydrating sand and gravel mixed with cement

Answer 334

Energy dissociation

Answer 335

Hydration energy

Answer 336

Electron affinity

Answer 337

High atomic number

Answer 338

Of localized electrons in it

Answer 339

Borazole is nonpolar compound

Answer 340

Borazole is electron deficient compound

Answer 341

Borazole is polar compound

Answer 342

nS₂, nP₃

Answer 343

NS₂, nP₄

Answer 344

nS₂, nP₆

Answer 345

ns₂, nP₅

Answer 346

Converting silver halides to metallic silver

Answer 347

Dissolving out unreacted silver bromide

Answer 348

Reducing solubility of AgBr

Answer 349

Preventing overdeveloping and fogging

Answer 350

Phosphorous acid

Answer 351

Hypo phosphoric acid

Answer 352

Hypo phosphorous acid

Answer 353

Orthophosphoric acid

Answer 354

Atomic number increases

Answer 355

Effective nuclear charge increases

Answer 356

Additive electrons are accommodated in new electron level

Answer 357

Atomic mass increases

Answer 358

Plaster of Paris

Answer 359

Epsom salt

Answer 360

To protect the anodes

Answer 361

To make a conducting solution of bauxite

Answer 362

To increase Al production

Answer 363

To act as reducing agent

Answer 364

It decreases gradually down the group

Answer 365

None of these

Answer 366

Noble gases have o heat of vapourization

Answer 367

It increases gradually down the group

Answer 368

None of these

Answer 369

Free electrons

Answer 370

Free molecules

Answer 371

Atoms of sodium and chlorine

Answer 372

Calcium sulphates

Answer 373

Magnesium ammonium phosphate

Answer 374

Ferrous ammonium sulphate

Answer 375

Magnesium sulphates

Answer 376

Lower electro positivity

Answer 377

Low electronegativity

Answer 378

Low charge density

Answer 379

Non-metals

Answer 380

Radioactive

Answer 381

Polymorphic

Answer 382

Metalloids

Answer 383

Lead nitrate

Answer 384

Manganese dioxide

Answer 385

Mercuric oxide

Answer 386

Potassium chlorate

Answer 387

Monoatomic

Answer 388

Polyatomic

Answer 389

All of these

Answer 390

Ionic character of alkali metal halides decreases down the group

Answer 391

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

Answer 392

Melting and boiling points of alkali metals decrease down the group

Answer 393

Sodium is the most abundant metallic element in sea water

Answer 394

Tetrahedral

Answer 395

Greater hardness of Li

Answer 396

Small size of lithium atom and Li⁺ ion

Answer 397

Extremely high electropositivity of Li

Answer 398

Hydration of Li⁺ ion

Answer 399

Helium is much less soluble in blood than nitrogen

Answer 400

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

Answer 401

Nitrogen is much less soluble in blood than helium

Answer 402

Nitrogen is highly soluble in water

Answer 403

Lose 2 electrons

Answer 404

Gain 3 electrons

Answer 405

Gain 2 electrons

Answer 406

Lose 3 electrons

Answer 407

Nitrogen family

Answer 408

Oxygen family

Answer 409

Alkali metals

Answer 410

Monoclinic sulphur

Answer 411

Prismatic sulphur

Answer 412

Rhombic sulphur

Answer 413

Plastic sulphur

Answer 414

Mixture of argon and oxygen

Answer 415

Mixture of neon and oxygen

Answer 416

Mixture of xenon and nitrogen

Answer 417

Mixture of helium and oxygen

Answer 418

Chlorine gas over hot HgO

Answer 419

Perchloric acid (CHIO₄) over hot silver oxide

Answer 420

Chlorine and oxygen over hot silver chlorate

Answer 421

Hydrogen chloride over phosphorus pentoxide

Answer 422

Sodium reduces CO₂ to carbon

Answer 423

Magnesium reacts with cold water and liberates hydrogen

Answer 424

Magnallium is one alloy of Mg and zinc

Answer 425

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

Answer 426

Cage compound

Answer 427

Solid solution

Answer 428

Liquid crystal

Answer 429

Triatomic molecules

Answer 430

Single free atoms

Answer 431

Atoms linked by weak bonds

Answer 432

Diatomic molecules

Answer 433

Fluorine atom is smaller in size

Answer 434

Fluorine is highly reactive

Answer 435

HF is the weakest acid

Answer 436

HF molecules form intermolecular H-bonds

Answer 437

Decreases down the group

Answer 438

Variation is not regular

Answer 439

Increases down the group

Answer 440

Remains unchanged

Answer 441

Higher co-ordination can be achieved by Al

Answer 442

Al has high ionization energy

Answer 443

Al belongs to third group

Answer 444

It cannot form a trimer

Answer 445

III group radicals are precipitated as hydroxides

Answer 446

Sulphur is present in the mixture as impurity

Answer 447

IV group radicals are precipitated as sulphides

Answer 448

Of the oxidation of H₂S gas by some acid radicals

Answer 449

Oxidizing as well as reducing agents

Answer 450

Reducing agents

Answer 451

Drying agents

Answer 452

Oxidizing agents

Answer 453

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer 454

Electron affinity of chlorine is greater than that of fluorine

Answer 455

Bond energy of fluorine is less than that of chlorine

Answer 456

Fluorine does not form oxoacid

Answer 457

Equal to O and Se

Answer 458

Less than O but more than SE

Answer 459

More than O and Se

Answer 460

More than O but less than Se

Answer 461

Nuclear masses

Answer 462

Nuclear neutron-proton number rations

Answer 463

Atomic masses

Answer 464

Atomic numbers

Answer 465

Ordinary (soda lime) glass

Answer 466

Iron from haematite

Answer 467

Solvay process of sodium carbonate

Answer 468

Phosphorus from phosphorite

Answer 469

Sodium thiosulphate

Answer 470

Sodium persulphate

Answer 471

Sodium sulphides

Answer 472

Sodiums sulphates

Answer 473

Al > Mg > Na > Si

Answer 474

Si > Mg > Al > Na

Answer 475

Mg > Na > Al > Si

Answer 476

Na > Mg > Al > Si

Answer 477

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

Answer 478

They are all diatomic and form univalent ions

Answer 479

They are all diatomic and form divalent ions

Answer 480

They are all capable of exhibiting several oxidation states

Answer 481

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Answer 482

Some nitrogen molecules analogous to O₂

Answer 483

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

Answer 484

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

Answer 485

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

Answer 486

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

Answer 487

Refrigerant

Answer 488

Insecticide

Answer 489

Lattice energy

Answer 490

Hydration energy

Answer 491

Electron affinity

Answer 492

Ionization energy

Answer 493

Haemoglobin

Answer 494

Chlorophyll

Answer 495

It has highest electronegativity

Answer 496

It has highest first ionization energy

Answer 497

It is more reactive than other halogens

Answer 498

It restricts to oxidation state – 1 only

Answer 499

Dipole-dipole forces

Answer 500

None of these

Answer 501

Strongest vanderwaal’s force

Answer 502

H. bonding

Answer 503

Oxyborates

Answer 504

Kl has high m.p.

Answer 505

Lattice energy of CaO is much higher than that of Kl

Answer 506

CaO has high m.p.

Answer 507

Kl is soluble in benzene

Answer 508

Entropy of solution formation

Answer 509

Lattice energy solids

Answer 510

Inter – ionic attraction

Answer 511

Hydration energies of cations

Answer 512

Iodine solution

Answer 513

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

Answer 514

There is no change in the nuclear charge

Answer 515

None of these

Answer 516

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

Answer 517

The first ionization energy

Answer 518

The basic character of the oxides

Answer 519

The stability of +2 oxidation state

Answer 520

Ionic character of the compound

Answer 521

Sea shells

Answer 522

Calcried gypsum

Answer 523

A marble states

Answer 524

Bauxite is less impure

Answer 525

Bauxite is available in large quantity

Answer 526

Bauxite contains maximum of Al

Answer 527

Of easy extraction of Al from it

Answer 528

A carbonate

Answer 529

A sulphate

Answer 530

Li₂CO₃ is soluble in water

Answer 531

Carbonates of Ca, Ba, Sr are soluble in water

Answer 532

Basic carbonates of Mg and Cu are soluble in water

Answer 533

Carbonates of Na, K, NH₄ are soluble in water

Answer 534

High polarisability

Answer 535

Gaseous nature

Answer 536

Weak van der Waals forces between atoms

Answer 537

For preparing artificial

Answer 538

As an oxidizer in metallurgy

Answer 539

As an abrasive in the form of abundum

Answer 540

In form of foil for wrapping

Answer 541

Reducing agent

Answer 542

Oxidizing agent

Answer 543

All the three

Answer 544

None of these

Answer 545

H₂B₄O₇

Answer 546

It is used in the formation white cement

Answer 547

It is used as fire proof in textile

Answer 548

It is as filter for soap

Answer 549

It is used furniture polish

Answer 550

It is covalent

Answer 551

HCl is formed in moist air

Answer 552

It is very volatile

Answer 553

It is highly hygroscopic

Answer 554

Sodium bicarbonate

Answer 555

Calcium carbonate

Answer 556

Sodium carbonate

Answer 557

Calcium oxide

Answer 558

The reaction does not go to completion

Answer 559

The reaction is highly exothermic

Answer 560

SO₃ is insoluble in H₂O

Answer 561

The reaction is quite slow

Answer 562

Lighter than air and cheap to produce

Answer 563

Expensive but easy to store in cylinder

Answer 564

Expense, but a very uncreative gas

Answer 565

Less dense then air and not flammable

Answer 566

Sodium amide

Answer 567

Sodium atoms

Answer 568

Solvated electrons

Answer 569

Sodium hydride

Answer 570

Paper printing

Answer 571

Leather printing

Answer 572

Glass printing

Answer 573

Cloth printing

Answer 574

Ionization energy

Answer 575

Atomic radius

Answer 576

Electro negativity

Answer 577

None of these

Answer 578

Soda glass

Answer 579

Borosilicate glass

Answer 580

Crooke’s glass

Answer 581

Flint glass

Answer 582

Entropy of solution formation

Answer 583

Lattice energies if solids

Answer 584

Inter ionic attraction

Answer 585

Hydration energies of cations

Answer 586

Inert gases

Answer 587

Alkaline earth metals

Answer 588

Alkali metals

Answer 589

None of these

Answer 590

Cl₂ is more insoluble in water

Answer 591

Iodine is a solid

Answer 592

Br is more reactive than Cl₂

Answer 593

It has oxidation state of +4

Answer 594

It is a gas at room temperature

Answer 595

It forms RX₂

Answer 596

It forms R₂O₃

Answer 597

CaSO₄. 3H₂O

Answer 598

CaSO₄. 1/2H₂O

Answer 599

CaSO₄.2H₂O

Answer 600

In the atmosphere

Answer 601

As salts in ponds

Answer 602

Iron and sulphur

Answer 603

Aluminum and silicon

Answer 604

Proton and silicon

Answer 605

Gallium and Germanium

Answer 606

Diatomic molecules

Answer 607

Various forms

Answer 608

Cannot be predicted

Answer 609

Monoatomic molecules

Answer 610

None of these of M²⁺ ions

Answer 611

Diamagnetic nature

Answer 612

High lattice energy of M²⁺ ions in the solid state

Answer 613

High energies of hydration of M²⁺ in solution

Answer 614

+2, +4, +6

Answer 615

-2, +2, +6

Answer 616

It decomposes the acid

Answer 617

Acid decomposes water

Answer 618

It hydrolyses the acid

Answer 619

Acid forms hydrates with water

Answer 620

High covalent nature

Answer 621

High ∆H lattice

Answer 622

Small ionic size of Li⁺

Answer 623

Low ∆H lattice

Answer 624

Three layers have different densities

Answer 625

Three layers are maintained at different temperatures

Answer 626

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

Answer 627

There is special arrangement is cell to keep the layers separate

Answer 628

It reacts with fats to form soap

Answer 629

It is used in soda water

Answer 630

It corrodes the organic tissues

Answer 631

It reacts with chlorine gas

Answer 632

Hypo phosphorous acid

Answer 633

Pyro phosphoric acid

Answer 634

Orthophosphoric acid

Answer 635

Metaphosphoric acid

Answer 636

It restricts to oxidation state – 1 only

Answer 637

It is more reactive than other halogens

Answer 638

It has highest E.N

Answer 639

It has highest first I.E

Answer 640

CO₂ and Ar

Answer 641

O₂ and CO₂

Answer 642

O₂ and He

Answer 643

O₂ and Ar

Answer 644

Cannot be predicted

Answer 645

None of these

Answer 646

Tetrahedral

Answer 647

Distorted octahedral

Answer 648

Low first ionization energy

Answer 649

High dissociation energy

Answer 650

Small size

Answer 651

Covalent nature

Answer 652

Acidic nature

Answer 653

Ionization property

Answer 654

Electron deficiency

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

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

Key Preparation Tips:

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Malik Tahir

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