Chemistry The Halogens and Noble Gases Online Mcqs Test

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Question 1

1. Reactivity of borazole is greter than that of benzene because

Answer

Borazole is polar compound

Answer

Borazole is nonpolar compound

Answer

Of localized electrons in it

Answer

Borazole is electron deficient compound

Question 2

2. Which is the gas among the following that reacts with H₂ is darkness?

Question 3

3. The element which has a simple cubic lattice in solid state is

Answer

None of these

Question 4

4. Which of the following is most volatile?

Question 5

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

Question 6

6. The alkali metals

Answer

Form salt like hydrides

Answer

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

Answer

Form salts which are predominantly covalent

Answer

Show increasing electro negativity from Li to Cs.

Question 7

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

Question 8

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

Answer

Mass number

Answer

Atomic number

Answer

Isotopic number

Answer

Atomic mass

Question 9

9. Freon-12 is used as a

Answer

Insecticide

Answer

Refrigerant

Question 10

10. Which one of the following properties is not correct for ozone?

Answer

It oxidizes potassium iodide

Answer

It cannot act as a bleaching agent

Answer

It oxidizes lead sulphides

Answer

It oxidizes mercury

Question 11

11. Which halogen have most corrosive action on skin?

Question 12

12. 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 13

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

Question 14

14. The density of nitrogen gas prepared from air is slightly greater than that of nitrogen prepared by a chemical reaction form a compound of nitrogen due to the presence of the following in aerial nitrogen.

Answer

Some nitrogen molecules analogous to O₂

Answer

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Question 15

15. Which is the most volatile compound?

Question 16

16. Which one among the following form maximum number of compounds?

Question 17

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

Answer

O > C > B > N

Answer

B > N > C > O

Answer

O > C > N > B

Answer

O > B > C > N

Question 18

18. HNO₂ acts as an/a

Answer

Oxidizing agent

Answer

Reducing agent

Answer

All the three

Question 19

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

Answer

Sodium amide

Answer

Sodium atoms

Answer

Sodium hydride

Answer

Solvated electrons

Question 20

20. Which one is the biggest ion?

Question 21

21. Which gives green colour in fireworks?

Question 22

22. When ammonia is heated with cupric oxide, a molecule of ammonia will

Answer

Gain 3 electrons

Answer

Lose 2 electrons

Answer

Gain 2 electrons

Answer

Lose 3 electrons

Question 23

23. Alkali metals are generally extracted by

Answer

Reduction methods

Answer

Double decomposition methods

Answer

Displacement methods

Answer

Electrolytic methods

Question 24

24. Mark the compound which does not exist

Question 25

25. Sodium chloride when heated with conc. H₂SO₄ and solid potassium dichromate gives

Answer

Chromous chloride

Answer

Chromic chloride

Answer

Chromyl chloride

Question 26

26. Sodium sulphates is solute in water but barium sulphates is insoluble because

Answer

Both a and b

Answer

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer

The lattice energy has no role to play in solubility

Answer

The lattice energy of BaSO₄ is more than its hydration energy

Question 27

27. According to the Periodic Law of elements, the variation in properties of elements is related to their

Answer

Atomic masses

Answer

Atomic numbers

Answer

Nuclear neutron-proton number rations

Answer

Nuclear masses

Question 28

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

Question 29

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

Question 30

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

Question 31

31. Which of the following metal is present in chlorophyll?

Question 32

32. Which of the following is most electronegative?

Question 33

33. Variable valency is characteristic of

Answer

Alkali metals

Answer

Transition elements

Question 34

34. Which shows maximum catenation property?

Question 35

35. Sea divers go deep in the sea water with a mixture of which of the following gases?

Answer

O₂ and CO₂

Answer

CO₂ and Ar

Answer

O₂ and Ar

Answer

O₂ and He

Question 36

36. The electronic configuration of metal M is 1s², 2s², 2p⁶, 3s¹. The formula of its oxide would be

Question 37

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

Answer

Strongest vanderwaal’s force

Answer

Dipole-dipole forces

Answer

H. bonding

Answer

None of these

Question 38

38. Which one of the following reactions is not associated with the Solvay process of manufacture of sodium carbonate?

Answer

CO₃ + H₂O → H₂CO₃

Answer

2NaOH + CO₂ → Na₂CO₃ + H₂O

Answer

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer

NH₃ + H₂CO₃ → NH₄HCO₃

Question 39

39. The difference of water molecules in gypsum and plaster of Paris is

Question 40

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

Question 41

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

Answer

Bond energy of fluorine is less than that of chlorine

Answer

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer

Electron affinity of chlorine is greater than that of fluorine

Answer

Fluorine does not form oxoacid

Question 42

42. The strongest reducing agent out of Na, K, Rb And Cs is

Question 43

43. Which element forms an ion with charge +3?

Question 44

44. Which of the following phosphorus is most reactive?

Answer

Scarlet phosphorus

Answer

Violet phosphorus

Answer

White phosphorus

Answer

Red phosphorus

Question 45

45. The substance not likely to contain CaCO₃ is

Answer

A marble states

Answer

Calcried gypsum

Answer

Sea shells

Question 46

46. Which of the following element has the maximum electron affinity?

Question 47

47. Which halogen acid is a liquid no room temperature?

Question 48

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

Question 49

49. Epsom salt is the hydrate of one of the following

Answer

Calcium sulphates

Answer

Magnesium sulphates

Answer

Ferrous ammonium sulphate

Answer

Magnesium ammonium phosphate

Question 50

50. Sea weeds are important source of

Question 51

51. P₂O₅ is heated with water to give

Answer

Phosphorous acid

Answer

Orthophosphoric acid

Answer

Hypo phosphorous acid

Answer

Hypo phosphoric acid

Question 52

52. The shape of gaseous SnCl₂ is

Answer

Tetrahedral

Question 53

53. Electron affinity depends on

Answer

Atomic size

Answer

Atomic size and nuclear charge both

Answer

Atomic number

Answer

Nuclear charge

Question 54

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

Answer

Free electrons

Answer

Atoms of sodium and chlorine

Answer

Free molecules

Question 55

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

Answer

9, 17, 35, 53

Answer

37, 19, 3, 55

Answer

1, 12, 30, 4, 62

Answer

12, 20, 56, 88

Question 56

56. Boron compounds behave as Lewis acid because of their

Answer

Ionization property

Answer

Acidic nature

Answer

Covalent nature

Answer

Electron deficiency

Question 57

57. Electron affinity of sulphur is

Answer

More than O but less than Se

Answer

Less than O but more than SE

Answer

Equal to O and Se

Answer

More than O and Se

Question 58

58. Halogens exist in the form of

Answer

Various forms

Answer

Monoatomic molecules

Answer

Cannot be predicted

Answer

Diatomic molecules

Question 59

59. Alkaline earth metals comes under

Answer

Transition elements

Answer

Inner transition elements

Answer

Representative elements

Question 60

60. The type of hybridization of born in diborane is

Answer

Sp-hybridisation

Answer

Sp³- hybridization

Answer

Sp²-hybridisation

Answer

Sp³d²-hybridisation

Question 61

61. The metal that dissolves in liquid ammonia, giving a dark blue coloured solution is

Question 62

62. Select the weakest acid among the following

Question 63

63. Electropositive character increase down the group due to

Answer

Increase in atomic size of elements

Answer

Decrease in electronegativity of the elements

Answer

Decrease in I.P

Answer

All of these

Question 64

64. Who reported first noble gas?

Answer

J.J Thomson

Answer

Frank land

Answer 126

Ca₃(PO₄)₂

Answer 127

High ionization potential

Answer 128

Low ionization potential

Answer 129

Large size

Answer 130

Low electron affinity

Answer 131

Monoatomic

Answer 132

All of these

Answer 133

Polyatomic

Answer 134

Developing interlocking needle like crystals of hydrated silicates

Answer 135

Converting sand into silici acid

Answer 136

Keeping it cool

Answer 137

Hydrating sand and gravel mixed with cement

Answer 138

Oxidizing agents

Answer 139

Drying agents

Answer 140

Reducing agents

Answer 141

Oxidizing as well as reducing agents

Answer 142

Iron and sulphur

Answer 143

Proton and silicon

Answer 144

Gallium and Germanium

Answer 145

Aluminum and silicon

Answer 146

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

Answer 147

None of these

Answer 148

There is no change in the nuclear charge

Answer 149

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

Answer 150

It hydrolyses the acid

Answer 151

It decomposes the acid

Answer 152

Acid forms hydrates with water

Answer 153

Acid decomposes water

Answer 154

Sodium azide

Answer 155

Sodium hydride

Answer 156

Sodium amide

Answer 157

Sodium nitride

Answer 158

Sodium silicate and lead silicate

Answer 159

Sodium silicate and aluminum borosilicate

Answer 160

Sodium silicate and calcium silicate

Answer 161

Sodium borosilicate and aluminum borosilicate

Answer 162

Expensive but easy to store in cylinder

Answer 163

Lighter than air and cheap to produce

Answer 164

Less dense then air and not flammable

Answer 165

Expense, but a very uncreative gas

Answer 166

Plaster of Paris

Answer 167

Epsom salt

Answer 168

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

Answer 169

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

Answer 170

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

Answer 171

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

Answer 172

Atoms linked by weak bonds

Answer 173

Single free atoms

Answer 174

Triatomic molecules

Answer 175

Diatomic molecules

Answer 176

Low charge density

Answer 177

Lower electro positivity

Answer 178

Low electronegativity

Answer 179

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

Answer 180

Magnesium reacts with cold water and liberates hydrogen

Answer 181

Sodium reduces CO₂ to carbon

Answer 182

Magnallium is one alloy of Mg and zinc

Answer 183

Crooke’s glass

Answer 184

Flint glass

Answer 185

Borosilicate glass

Answer 186

Soda glass

Answer 187

Heat of dissociation

Answer 188

Ionization potential

Answer 189

Heat of hydration

Answer 190

Electron affinity

Answer 191

Of the oxidation of H₂S gas by some acid radicals

Answer 192

Sulphur is present in the mixture as impurity

Answer 193

III group radicals are precipitated as hydroxides

Answer 194

IV group radicals are precipitated as sulphides

Answer 195

In the most readily available gas

Answer 196

Has the highest heat of vaporization

Answer 197

Has the lowest ionization enthalpy

Answer 198

Has the largest size

Answer 199

The fixation of picture

Answer 200

Developing picture

Answer 201

Picture printed

Answer 202

The colour of picture

Answer 203

Cage compound

Answer 204

Liquid crystal

Answer 205

Solid solution

Answer 206

Na₂Al(OH)₄

Answer 207

Al₂(OH)₄

Answer 208

Na₃AlO₃

Answer 209

Iodine solution

Answer 210

Atomic radius

Answer 211

Electro negativity

Answer 212

Ionization energy

Answer 213

Alkali metals

Answer 214

Inert gases

Answer 215

Alkaline earth metals

Answer 216

Phosphorus pentoxidse

Answer 217

Na₃PO₄

Answer 218

Active charcoal

Answer 219

Anhydrous calcium chloride

Answer 220

High ionization energy

Answer 221

Their ions are isoelectronic with noble gases

Answer 222

Low melting point

Answer 223

Low electronegativity

Answer 224

It is used as fire proof in textile

Answer 225

It is used in the formation white cement

Answer 226

It is used furniture polish

Answer 227

It is as filter for soap

Answer 228

Carbon dioxide

Answer 229

Sulphur dioxide

Answer 230

None of these

Answer 231

It decreases gradually down the group

Answer 232

It increases gradually down the group

Answer 233

Noble gases have o heat of vapourization

Answer 234

Phosphorus from phosphorite

Answer 235

Iron from haematite

Answer 236

Solvay process of sodium carbonate

Answer 237

Ordinary (soda lime) glass

Answer 238

Greater hardness of Li

Answer 239

Small size of lithium atom and Li⁺ ion

Answer 240

Hydration of Li⁺ ion

Answer 241

Extremely high electropositivity of Li

Answer 242

For preparing artificial

Answer 243

In form of foil for wrapping

Answer 244

As an oxidizer in metallurgy

Answer 245

As an abrasive in the form of abundum

Answer 246

Nitrogen trichloride

Answer 247

Phosphorus trichloride

Answer 248

Hyponitrous acid

Answer 249

Nitrosyl chloride

Answer 250

Carbonates of Ca, Ba, Sr are soluble in water

Answer 251

Basic carbonates of Mg and Cu are soluble in water

Answer 252

Li₂CO₃ is soluble in water

Answer 253

Carbonates of Na, K, NH₄ are soluble in water

Answer 254

Hydrolyzing agents

Answer 255

Reducing agents

Answer 256

Both oxidizing and reducing agents

Answer 257

Oxidizing agents

Answer 258

Carlo’s acid

Answer 259

Dithionic acid

Answer 260

Sulphurous acid

Answer 261

Pyrosulphuric acid

Answer 262

Hydration energy of ion

Answer 263

High atomic number

Answer 264

Energy dissociation

Answer 265

Electron affinity

Answer 266

Gypsum contains a lower percentage of calcium than plaster of pairs

Answer 267

Plaster of Pairs can be obtained by partial oxidation of gypsum

Answer 268

Gypsum is obtained by heating plaster of pairs

Answer 269

Plaster of Paris is obtained by partial oxidation of gypsum

Answer 270

Perchloric acid (CHIO₄) over hot silver oxide

Answer 271

Chlorine and oxygen over hot silver chlorate

Answer 272

Chlorine gas over hot HgO

Answer 273

Hydrogen chloride over phosphorus pentoxide

Answer 274

They are all diatomic and form univalent ions

Answer 275

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

Answer 276

They are all diatomic and form divalent ions

Answer 277

They are all capable of exhibiting several oxidation states

Answer 278

It has metallic bond

Answer 279

It is highly electronegative

Answer 280

Its molecule has a large size

Answer 281

It possess hydrogen bonding

Answer 282

Both have similar electronic configurations

Answer 283

Both are found together in nature

Answer 284

The ratio of their charge to size is nearly the same

Answer 285

Both have nearly the same size

Answer 286

Increases down the group

Answer 287

Remains unchanged

Answer 288

Variation is not regular

Answer 289

Decreases down the group

Answer 290

Their ionization potential is less than that of other elements

Answer 291

They contain only one electron in their outermost shell

Answer 292

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

Answer 293

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

Answer 294

Half-life of Rn is only 3-8 days

Answer 295

HE is used in producing very low temperatures

Answer 296

Ar is used in electric bulbs

Answer 297

Ne is obtained during radioactive disintegration

Answer 298

Ca and CO₂

Answer 299

Sodium hydride

Answer 300

Solvated electrons

Answer 301

Sodium atoms

Answer 302

Sodium amide

Answer 303

A sulphate

Answer 304

A carbonate

Answer 305

None of these

Answer 306

H₂B₄O₇

Answer 307

Lower ionization energies

Answer 308

Greater hardness

Answer 309

Highest boiling points

Answer 310

Smaller ionic radii

Answer 311

Bauxite contains maximum of Al

Answer 312

Bauxite is available in large quantity

Answer 313

Of easy extraction of Al from it

Answer 314

Bauxite is less impure

Answer 315

Orthophosphoric acid

Answer 316

Metaphosphoric acid

Answer 317

Hypo phosphorous acid

Answer 318

Pyro phosphoric acid

Answer 319

Absence of bond polarity

Answer 320

Multiple bond formation in the molecule

Answer 321

High bond energy

Answer 322

Short internuclear distance

Answer 323

Effective nuclear charge increases

Answer 324

Atomic number increases

Answer 325

Additive electrons are accommodated in new electron level

Answer 326

Atomic mass increases

Answer 327

Elemental Na is a strong oxidizing agent

Answer 328

Elemental Na is easily oxidized

Answer 329

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

Answer 330

Elemental Na is insoluble in NH₃

Answer 331

Entropy of solution formation

Answer 332

Hydration energies of cations

Answer 333

Inter ionic attraction

Answer 334

Lattice energies if solids

Answer 335

It is highly hygroscopic

Answer 336

It is covalent

Answer 337

It is very volatile

Answer 338

HCl is formed in moist air

Answer 339

Mixture of xenon and nitrogen

Answer 340

Mixture of argon and oxygen

Answer 341

Mixture of neon and oxygen

Answer 342

Mixture of helium and oxygen

Answer 343

Helium is much less soluble in blood than nitrogen

Answer 344

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

Answer 345

Nitrogen is highly soluble in water

Answer 346

Nitrogen is much less soluble in blood than helium

Answer 347

It has oxidation state of +4

Answer 348

It is a gas at room temperature

Answer 349

It forms RX₂

Answer 350

It forms R₂O₃

Answer 351

Tri-calcium silicate

Answer 352

Tetra calcium aluminoferrite

Answer 353

Tri-calcium aluminate

Answer 354

Diclacium silicate

Answer 355

Mercuric oxide

Answer 356

Potassium chlorate

Answer 357

Manganese dioxide

Answer 358

Lead nitrate

Answer 359

Small ionic size

Answer 360

Large atomic size

Answer 361

Metallic properties

Answer 362

Strongly bond valence electrons

Answer 363

To make a conducting solution of bauxite

Answer 364

To act as reducing agent

Answer 365

To protect the anodes

Answer 366

To increase Al production

Answer 367

Sodium sulphides

Answer 368

Sodiums sulphates

Answer 369

Sodium persulphate

Answer 370

Sodium thiosulphate

Answer 371

Covalent and liquid

Answer 372

Ionic and gas

Answer 373

Ionic and liquid

Answer 374

None of these

Answer 375

Hydration energy

Answer 376

Lattice energy

Answer 377

Electron affinity

Answer 378

Ionization energy

Answer 379

CaSO₄.2H₂O

Answer 380

CaSO₄. 1/2H₂O

Answer 381

CaSO₄. 3H₂O

Answer 382

Nitride ion

Answer 383

Sodium ion

Answer 384

Chloride ion

Answer 385

Fluoride ion

Answer 386

Strong oxidizing agents

Answer 387

Weak reducing agents

Answer 388

Weak oxidizing agents

Answer 389

Strong reducing agents

Answer 390

Tetrabasic

Answer 391

Hydrogenation

Answer 392

Chlorination

Answer 393

CaCN₂ + C

Answer 394

CaC₂ + C

Answer 395

Ca(CN)₂ + C

Answer 396

Alkali metals

Answer 397

Nitrogen family

Answer 398

Oxygen family

Answer 399

High covalent nature

Answer 400

High ∆H lattice

Answer 401

Small ionic size of Li⁺

Answer 402

Low ∆H lattice

Answer 403

Ionization energy

Answer 404

Boiling point

Answer 405

Atomic radius

Answer 406

Nitrous oxide

Answer 407

Dinitrogen tetraoxide

Answer 408

Nitric oxide

Answer 409

Nitrogen dioxide

Answer 410

Lattice energy solids

Answer 411

Hydration energies of cations

Answer 412

Inter – ionic attraction

Answer 413

Entropy of solution formation

Answer 414

Three layers have different densities

Answer 415

Three layers are maintained at different temperatures

Answer 416

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

Answer 417

There is special arrangement is cell to keep the layers separate

Answer 418

Potassium and magnesium

Answer 419

Magnesium and chlorine

Answer 420

Potassium only

Answer 421

Magnesium only

Answer 422

As a drying agent

Answer 423

In dentistry and surgery

Answer 424

In metallurgical process

Answer 425

As a plaster for walls

Answer 426

Antiferromagnetic

Answer 427

Diamagnetic

Answer 428

Ferromagnetic

Answer 429

Paramagnetic

Answer 430

None of these

Answer 431

Tetrahedral

Answer 432

Distorted octahedral

Answer 433

All the halogens have electronic configuration ns2P5

Answer 434

All are non-metals

Answer 435

They have high electron affinity and ionization energy

Answer 436

All the halogens react with noble gases to form their halides

Answer 437

Reaction with CO₂

Answer 438

Reaction with NaOH

Answer 439

Reaction with brine solution

Answer 440

Presence of NH₃

Answer 441

Prismatic sulphur

Answer 442

Plastic sulphur

Answer 443

Monoclinic sulphur

Answer 444

Rhombic sulphur

Answer 445

-2, +2, +6

Answer 446

+2, +4, +6

Answer 447

Keep away the sharks

Answer 448

Mark the ship lighter

Answer 449

Prevent puncturing by under sea rock

Answer 450

To prevent the action of water and salt

Answer 451

Low first ionization energy

Answer 452

High dissociation energy

Answer 453

Small size

Answer 454

Electrolysis of solution of calcium chloride in water

Answer 455

Reduction of calcium chloride with carbon

Answer 456

Electrolysis of molten anhydrous or fused calcium chloride

Answer 457

Roasting lime stone

Answer 458

Tetrahedral, acidic

Answer 459

Angular, disc

Answer 460

Linear acidic

Answer 461

Linear, basic

Answer 462

ns₂, nP₅

Answer 463

NS₂, nP₄

Answer 464

nS₂, nP₆

Answer 465

nS₂, nP₃

Answer 466

F₂ > Cl₂ > Br₂ > I₂

Answer 467

Cl₂ > Br₂ > I₂ > F₂

Answer 468

I₂ > Br₂ > Cl₂ > F₂

Answer 469

Br₂ > Cl₂ > F₂ > I₂

Answer 470

Hydration energy

Answer 471

High atomic number

Answer 472

Electron affinity

Answer 473

Energy dissociation

Answer 474

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

Answer 475

Sodium is the most abundant metallic element in sea water

Answer 476

Melting and boiling points of alkali metals decrease down the group

Answer 477

Ionic character of alkali metal halides decreases down the group

Answer 478

Calcium oxide

Answer 479

Hypochlorous acid

Answer 480

Kl has high m.p.

Answer 481

Kl is soluble in benzene

Answer 482

CaO has high m.p.

Answer 483

Lattice energy of CaO is much higher than that of Kl

Answer 484

Chalcopyrites

Answer 485

Highly soluble in water

Answer 486

Insoluble in water

Answer 487

Less soluble in water

Answer 488

Variable trend

Answer 489

Iron oxide

Answer 490

Ionization energy

Answer 491

Atomic radius

Answer 492

Boiling point

Answer 493

d-orbitals

Answer 494

p-orbitals

Answer 495

s-orbitals

Answer 496

Absorbs moisture and turn into liquid

Answer 497

Increases the water of crystallization

Answer 498

Absorbs moisture and remain solid

Answer 499

Loses water of crystallization

Answer 500

Marshall’s acid

Answer 501

None of these

Answer 502

Sulphuric acid

Answer 503

Carlo’s acid

Answer 504

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 505

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

Answer 506

Ozone is more reactive than dioxygen

Answer 507

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

Answer 508

Al belongs to third group

Answer 509

It cannot form a trimer

Answer 510

Al has high ionization energy

Answer 511

Higher co-ordination can be achieved by Al

Answer 512

Polymorphic

Answer 513

Metalloids

Answer 514

Radioactive

Answer 515

Non-metals

Answer 516

Precipitate Mg metal

Answer 517

Have no effect

Answer 518

Precipitate Mg

Answer 519

Leads to the dissolution of beryllium metal

Answer 520

It is more electropositive than sodium

Answer 521

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 522

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

Answer 523

It is a strong reducing agent

Answer 524

I₂>F₂>Br₂>U₂

Answer 525

I₂>Br₂>U₂>F₂

Answer 526

U₂>Br₂>I₂>F₂

Answer 527

F₂>Cl₂>Br₂>I2

Answer 528

Diamagnetic nature

Answer 529

High lattice energy of M²⁺ ions in the solid state

Answer 530

None of these of M²⁺ ions

Answer 531

High energies of hydration of M²⁺ in solution

Answer 532

Phosphorus

Answer 533

‘Li’ has a great tendency to form hydrates

Answer 534

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

Answer 535

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 536

‘Li’ is not effected by air

Answer 537

Cannot be predicted

Answer 538

Fluorine atom is smaller in size

Answer 539

Fluorine is highly reactive

Answer 540

HF is the weakest acid

Answer 541

HF molecules form intermolecular H-bonds

Answer 542

Alkali metals have ns’ configuring in outermost shells

Answer 543

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

Answer 544

Alkali metal atom has the smallest size in its period

Answer 545

Alkali metals do not reacts with metals

Answer 546

None of these

Answer 547

Iodine is a solid

Answer 548

Br is more reactive than Cl₂

Answer 549

Cl₂ is more insoluble in water

Answer 550

Non-metallic nature of fluorine

Answer 551

Small size of fluorine

Answer 552

More electro negativity of fluorine

Answer 553

More electron repulsion in fluorine

Answer 554

Coordinate

Answer 555

It has highest first ionization energy

Answer 556

It is more reactive than other halogens

Answer 557

It restricts to oxidation state – 1 only

Answer 558

It has highest electronegativity

Answer 559

It changes into calcium chloride and calcium chlorate

Answer 560

It absorbs moisture

Answer 561

It changes into CaCl₂ and Ca(OH)₂

Answer 562

It change into calcium hypochlorate

Answer 563

SO₃ is insoluble in H₂O

Answer 564

The reaction is quite slow

Answer 565

The reaction does not go to completion

Answer 566

The reaction is highly exothermic

Answer 567

Calcium carbonate

Answer 568

Calcium oxide

Answer 569

Sodium bicarbonate

Answer 570

Sodium carbonate

Answer 571

Strong acid and strong base

Answer 572

Weak acid and strong base

Answer 573

Strong acid and weak base

Answer 574

Weak acid and weak base

Answer 575

Higher I-P

Answer 576

Zero electron affinity

Answer 577

Large size

Answer 578

Haemoglobin

Answer 579

Chlorophyll

Answer 580

It is more reactive than other halogens

Answer 581

It restricts to oxidation state – 1 only

Answer 582

It has highest E.N

Answer 583

It has highest first I.E

Answer 584

Gaseous nature

Answer 585

High polarisability

Answer 586

Weak van der Waals forces between atoms

Answer 587

Sulphur tetrachloride

Answer 588

Thionyl chloride

Answer 589

Sulphuryl chloride

Answer 590

Sulphur monochloride

Answer 591

Dissolving out unreacted silver bromide

Answer 592

Converting silver halides to metallic silver

Answer 593

Reducing solubility of AgBr

Answer 594

Preventing overdeveloping and fogging

Answer 595

Carnallite

Answer 596

Common salt

Answer 597

Cl > F > Br

Answer 598

F > Cl > Br

Answer 599

Br > Cl > F

Answer 600

F > Br > Cl

Answer 601

Paper printing

Answer 602

Cloth printing

Answer 603

Glass printing

Answer 604

Leather printing

Answer 605

Melting point

Answer 606

First ionization energy

Answer 607

Ionic radius

Answer 608

Electro negativity

Answer 609

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

Answer 610

Noble gases are all dense gases

Answer 611

None of these

Answer 612

Noble gases will all burn in pure oxygen

Answer 613

Oxyborates

Answer 614

Mg > Na > Al > Si

Answer 615

Al > Mg > Na > Si

Answer 616

Na > Mg > Al > Si

Answer 617

Si > Mg > Al > Na

Answer 618

The first ionization energy

Answer 619

Ionic character of the compound

Answer 620

The basic character of the oxides

Answer 621

The stability of +2 oxidation state

Answer 622

Dissolving heavy salt in water

Answer 623

Removing impurities of calcium and magnesium form water

Answer 624

Prolonged electrolysis of water

Answer 625

Simple distillation of water

Answer 626

None of these

Answer 627

Light metals

Answer 628

Heavy metals

Answer 629

Noble gases

Answer 630

Radish brown

Answer 631

Bluish green

Answer 632

Colourless

Answer 633

It is used in soda water

Answer 634

It reacts with chlorine gas

Answer 635

It reacts with fats to form soap

Answer 636

It corrodes the organic tissues

Answer 637

Frank land and Lockyer

Answer 638

Rutherford

Answer 639

With inert gases

Answer 640

With halogens

Answer 641

None of these

Answer 642

With alkali metals

Answer 643

Both oxidized and reduced

Answer 644

None of these

Answer 645

Whole group consist of non-metals

Answer 646

There is a regular gradation of properties from top to bottom

Answer 647

Abrupt change of properties

Answer 648

Marked change of properties

Answer 649

As salts in ponds

Answer 650

In the atmosphere

Answer 651

Castner cell

Answer 652

Down’s cell

Answer 653

Solvay process

Answer 654

Castner Kellner cell

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

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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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Malik Tahir

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