Chemistry The Halogens and Noble Gases Online Mcqs Test

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Question 1

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

Question 2

2. The halogen which reacts spontaneously with Au(s) to produce Au³⁺ is:

Question 3

3. Strongest reducing agent is

Question 4

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

Answer

Potassium chlorate

Answer

Mercuric oxide

Answer

Manganese dioxide

Answer

Lead nitrate

Question 5

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

Answer

Their ions are isoelectronic with noble gases

Answer

High ionization energy

Answer

Low melting point

Answer

Low electronegativity

Question 6

6. Choose a set which has both member from the same periods of periodic table

Question 7

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

Answer

Dinitrogen tetraoxide

Answer

Nitrous oxide

Answer

Nitrogen dioxide

Answer

Nitric oxide

Question 8

8. Air is not a commercial source of which noble gas

Question 9

9. XeF₄ involves which hybridization

Question 10

10. Among the halogens the rare element is

Question 11

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

Answer

Ionization energy

Answer

Atomic radius

Answer

Boiling point

Question 12

12. Cl₂O₇ is best prepared by passing by

Answer

Perchloric acid (CHIO₄) over hot silver oxide

Answer

Chlorine and oxygen over hot silver chlorate

Answer

Hydrogen chloride over phosphorus pentoxide

Answer

Chlorine gas over hot HgO

Question 13

13. The halogen which has only one oxidation state is

Question 14

14. Alkaline earth metals show standard electrode potential values which are very similar to their alkali metals due to

Answer

High energies of hydration of M²⁺ in solution

Answer

Diamagnetic nature

Answer

None of these of M²⁺ ions

Answer

High lattice energy of M²⁺ ions in the solid state

Question 15

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

Answer

Sodium amide

Answer

Sodium hydride

Answer

Sodium nitride

Answer

Sodium azide

Question 16

16. Boron compounds behave as Lewis acid because of their

Answer

Ionization property

Answer

Covalent nature

Answer

Acidic nature

Answer

Electron deficiency

Question 17

17. Orthophosphoric acid is

Answer

Tetrabasic

Question 18

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

Question 19

19. Which shows maximum catenation property?

Question 20

20. SO3 is not dissolve directly in H2O because

Answer

SO₃ is insoluble in H₂O

Answer

The reaction is quite slow

Answer

The reaction does not go to completion

Answer

The reaction is highly exothermic

Question 21

21. The last orbit of argon would have electrons

Question 22

22. The shape of gaseous SnCl₂ is

Answer

Tetrahedral

Question 23

23. Which one is the weakest oxyacid of chlorine?

Question 24

24. Which gives green colour in fireworks?

Question 25

25. Deliquescence is a process in which a solid

Answer

Increases the water of crystallization

Answer

Loses water of crystallization

Answer

Absorbs moisture and turn into liquid

Answer

Absorbs moisture and remain solid

Question 26

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

Question 27

27. Which of the following statements is incorrect about halogens?

Answer

All are non-metals

Answer

All the halogens react with noble gases to form their halides

Answer

They have high electron affinity and ionization energy

Answer

All the halogens have electronic configuration ns2P5

Question 28

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

Answer

Reaction with CO₂

Answer

Presence of NH₃

Answer

Reaction with brine solution

Answer

Reaction with NaOH

Question 29

29. Aluminum (III) chloride forms a dimer because

Answer

It cannot form a trimer

Answer

Al belongs to third group

Answer

Higher co-ordination can be achieved by Al

Answer

Al has high ionization energy

Question 30

30. Aqueous NaCl solution is electrolyzed using platinum electrodes. What is the product formed at cathode?

Question 31

31. Sometimes a yellow turbidity appears while passing H₂S gas even in the absence of II group radicals. This is because

Answer

III group radicals are precipitated as hydroxides

Answer

Sulphur is present in the mixture as impurity

Answer

Of the oxidation of H₂S gas by some acid radicals

Answer

IV group radicals are precipitated as sulphides

Question 32

32. Which of the following is correct?

Answer

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

Answer

Sodium reduces CO₂ to carbon

Answer

Magnesium reacts with cold water and liberates hydrogen

Answer

Magnallium is one alloy of Mg and zinc

Question 33

33. Neon glows in discharge tube as

Question 34

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

Question 35

35. The ionization potential is lowest for the

Answer

Alkali metals

Answer

Alkaline earth metals

Answer

Inert gases

Question 36

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

Question 37

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

Question 38

38. For two ionic solids CaO and Kl, identify the wrong statement among the following?

Answer

Kl has high m.p.

Answer

CaO has high m.p.

Answer

Lattice energy of CaO is much higher than that of Kl

Answer

Kl is soluble in benzene

Question 39

39. Which of the following is an inert gas?

Question 40

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

Answer

Borazole is electron deficient compound

Answer

Of localized electrons in it

Answer

Borazole is nonpolar compound

Answer

Borazole is polar compound

Question 41

41. The most abundant inert gas in the atmosphere is

Question 42

42. Plaster of Paris is used

Answer

In dentistry and surgery

Answer

As a drying agent

Answer

In metallurgical process

Answer

As a plaster for walls

Question 43

43. Keeping in view the uses of Al, mark the incorrect statement. Al is used

Answer

As an oxidizer in metallurgy

Answer

For preparing artificial

Answer

In form of foil for wrapping

Answer

As an abrasive in the form of abundum

Question 44

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

Answer

CO₃ + H₂O → H₂CO₃

Answer

NH₃ + H₂CO₃ → NH₄HCO₃

Answer

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer

2NaOH + CO₂ → Na₂CO₃ + H₂O

Question 45

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

Answer

Atomic numbers

Answer

Nuclear masses

Answer

Nuclear neutron-proton number rations

Answer

Atomic masses

Question 46

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

Question 47

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

Answer

Prevent puncturing by under sea rock

Answer

Keep away the sharks

Answer

Mark the ship lighter

Answer

To prevent the action of water and salt

Question 48

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

Question 49

49. Which one has highest electron affinity?

Question 50

50. What causes nitrogen to be chemically inert?

Answer

Absence of bond polarity

Answer

Multiple bond formation in the molecule

Answer

Short internuclear distance

Answer

High bond energy

Question 51

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

Question 52

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

Question 53

53. The bleaching action of chlorine is due to

Answer

Chlorination

Answer

Hydrogenation

Question 54

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

Answer

Heat of hydration

Answer

Heat of dissociation

Answer

Electron affinity

Answer

Ionization potential

Question 55

55. Bleaching powder loses its power on keeping for a long time because

Answer

It changes into CaCl₂ and Ca(OH)₂

Answer

It absorbs moisture

Answer

It changes into calcium chloride and calcium chlorate

Answer

It change into calcium hypochlorate

Question 56

56. Inert pair effect plays an important role in case of

Question 57

57. Which statement is correct about halogens?

Answer

They are all diatomic and form univalent ions

Answer

They are all capable of exhibiting several oxidation states

Answer

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

Answer

They are all diatomic and form divalent ions

Question 58

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

Question 59

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

Answer

Free molecules

Answer

Free electrons

Answer

Atoms of sodium and chlorine

Question 60

60. Which of the following is most electronegative?

Question 61

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

Question 62

62. As a fixing agent in photography, sodium thiosulphate is used for

Answer

Reducing solubility of AgBr

Answer

Converting silver halides to metallic silver

Answer

Preventing overdeveloping and fogging

Answer

Dissolving out unreacted silver bromide

Question 63

63. Calcium is obtained by

Answer

Electrolysis of solution of calcium chloride in water

Answer

Reduction of calcium chloride with carbon

Answer

Roasting lime stone

Answer

Electrolysis of molten anhydrous or fused calcium chloride

Question 64

64. Mark the smallest atom

Answer 122

Liquid crystal

Answer 123

Cage compound

Answer 124

Solid solution

Answer 125

Atomic number

Answer 126

Atomic size

Answer 127

Atomic size and nuclear charge both

Answer 128

Nuclear charge

Answer 129

d-orbitals

Answer 130

s-orbitals

Answer 131

p-orbitals

Answer 132

Transition elements

Answer 133

Alkali metals

Answer 134

White phosphorus

Answer 135

Violet phosphorus

Answer 136

Scarlet phosphorus

Answer 137

Red phosphorus

Answer 138

To increase Al production

Answer 139

To act as reducing agent

Answer 140

To make a conducting solution of bauxite

Answer 141

To protect the anodes

Answer 142

Transition elements

Answer 143

Inner transition elements

Answer 144

Representative elements

Answer 145

Remains unchanged

Answer 146

Decreases down the group

Answer 147

Variation is not regular

Answer 148

Increases down the group

Answer 149

Insecticide

Answer 150

Refrigerant

Answer 151

Bond energy of fluorine is less than that of chlorine

Answer 152

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer 153

Fluorine does not form oxoacid

Answer 154

Electron affinity of chlorine is greater than that of fluorine

Answer 155

Alkali metals have ns’ configuring in outermost shells

Answer 156

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

Answer 157

Alkali metals do not reacts with metals

Answer 158

Alkali metal atom has the smallest size in its period

Answer 159

There is no change in the nuclear charge

Answer 160

None of these

Answer 161

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

Answer 162

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

Answer 163

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

Answer 164

They contain only one electron in their outermost shell

Answer 165

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

Answer 166

Their ionization potential is less than that of other elements

Answer 167

Weak van der Waals forces between atoms

Answer 168

High polarisability

Answer 169

Gaseous nature

Answer 170

Sodium atoms

Answer 171

Sodium amide

Answer 172

Sodium hydride

Answer 173

Solvated electrons

Answer 174

High ∆H lattice

Answer 175

Small ionic size of Li⁺

Answer 176

High covalent nature

Answer 177

Low ∆H lattice

Answer 178

Entropy of solution formation

Answer 179

Inter – ionic attraction

Answer 180

Lattice energy solids

Answer 181

Hydration energies of cations

Answer 182

Cannot be predicted

Answer 183

Effective nuclear charge increases

Answer 184

Atomic number increases

Answer 185

Atomic mass increases

Answer 186

Additive electrons are accommodated in new electron level

Answer 187

Chromic chloride

Answer 188

Chromous chloride

Answer 189

Chromyl chloride

Answer 190

CaSO₄. 3H₂O

Answer 191

CaSO₄.2H₂O

Answer 192

CaSO₄. 1/2H₂O

Answer 193

J.J Thomson

Answer 194

Frank land

Answer 195

Has the lowest ionization enthalpy

Answer 196

Has the largest size

Answer 197

In the most readily available gas

Answer 198

Has the highest heat of vaporization

Answer 199

Solvay process of sodium carbonate

Answer 200

Phosphorus from phosphorite

Answer 201

Iron from haematite

Answer 202

Ordinary (soda lime) glass

Answer 203

Picture printed

Answer 204

Developing picture

Answer 205

The fixation of picture

Answer 206

The colour of picture

Answer 207

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 208

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

Answer 209

Ozone is more reactive than dioxygen

Answer 210

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

Answer 211

Reducing agents

Answer 212

Both oxidizing and reducing agents

Answer 213

Hydrolyzing agents

Answer 214

Oxidizing agents

Answer 215

Sodium silicate and calcium silicate

Answer 216

Sodium silicate and aluminum borosilicate

Answer 217

Sodium silicate and lead silicate

Answer 218

Sodium borosilicate and aluminum borosilicate

Answer 219

Lower electro positivity

Answer 220

Low charge density

Answer 221

Low electronegativity

Answer 222

Decrease in I.P

Answer 223

Increase in atomic size of elements

Answer 224

All of these

Answer 225

Decrease in electronegativity of the elements

Answer 226

Lighter than air and cheap to produce

Answer 227

Less dense then air and not flammable

Answer 228

Expensive but easy to store in cylinder

Answer 229

Expense, but a very uncreative gas

Answer 230

More than O and Se

Answer 231

More than O but less than Se

Answer 232

Equal to O and Se

Answer 233

Less than O but more than SE

Answer 234

Ca and CO₂

Answer 235

Ionization energy

Answer 236

Boiling point

Answer 237

Atomic radius

Answer 238

A marble states

Answer 239

Sea shells

Answer 240

Calcried gypsum

Answer 241

Sp³d²-hybridisation

Answer 242

Sp-hybridisation

Answer 243

Sp³- hybridization

Answer 244

Sp²-hybridisation

Answer 245

Electron affinity

Answer 246

Lattice energy

Answer 247

Hydration energy

Answer 248

Ionization energy

Answer 249

It has highest first I.E

Answer 250

It is more reactive than other halogens

Answer 251

It has highest E.N

Answer 252

It restricts to oxidation state – 1 only

Answer 253

Phosphorus

Answer 254

Phosphorus pentoxidse

Answer 255

Na₃PO₄

Answer 256

Anhydrous calcium chloride

Answer 257

Active charcoal

Answer 258

With inert gases

Answer 259

With alkali metals

Answer 260

With halogens

Answer 261

None of these

Answer 262

Nitrogen family

Answer 263

Alkali metals

Answer 264

Oxygen family

Answer 265

Metalloids

Answer 266

Polymorphic

Answer 267

Radioactive

Answer 268

Non-metals

Answer 269

Both oxidized and reduced

Answer 270

Weak oxidizing agents

Answer 271

Strong oxidizing agents

Answer 272

Weak reducing agents

Answer 273

Strong reducing agents

Answer 274

It is used in soda water

Answer 275

It reacts with fats to form soap

Answer 276

It reacts with chlorine gas

Answer 277

It corrodes the organic tissues

Answer 278

It is a gas at room temperature

Answer 279

It forms R₂O₃

Answer 280

It has oxidation state of +4

Answer 281

It forms RX₂

Answer 282

Its molecule has a large size

Answer 283

It has metallic bond

Answer 284

It possess hydrogen bonding

Answer 285

It is highly electronegative

Answer 286

CaC₂ + C

Answer 287

Ca(CN)₂ + C

Answer 288

CaCN₂ + C

Answer 289

-2, +2, +6

Answer 290

+2, +4, +6

Answer 291

‘Li’ is not effected by air

Answer 292

‘Li’ has a great tendency to form hydrates

Answer 293

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

Answer 294

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 295

Hydration energy

Answer 296

Energy dissociation

Answer 297

Electron affinity

Answer 298

High atomic number

Answer 299

O > B > C > N

Answer 300

B > N > C > O

Answer 301

O > C > N > B

Answer 302

O > C > B > N

Answer 303

Elemental Na is insoluble in NH₃

Answer 304

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

Answer 305

Elemental Na is easily oxidized

Answer 306

Elemental Na is a strong oxidizing agent

Answer 307

Hydration of Li⁺ ion

Answer 308

Greater hardness of Li

Answer 309

Extremely high electropositivity of Li

Answer 310

Small size of lithium atom and Li⁺ ion

Answer 311

Plaster of Paris

Answer 312

Epsom salt

Answer 313

HCl is formed in moist air

Answer 314

It is covalent

Answer 315

It is highly hygroscopic

Answer 316

It is very volatile

Answer 317

Carnallite

Answer 318

Common salt

Answer 319

37, 19, 3, 55

Answer 320

9, 17, 35, 53

Answer 321

12, 20, 56, 88

Answer 322

1, 12, 30, 4, 62

Answer 323

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

Answer 324

Form salt like hydrides

Answer 325

Show increasing electro negativity from Li to Cs.

Answer 326

Form salts which are predominantly covalent

Answer 327

Oxyborates

Answer 328

Triatomic molecules

Answer 329

Atoms linked by weak bonds

Answer 330

Single free atoms

Answer 331

Diatomic molecules

Answer 332

Large size

Answer 333

Higher I-P

Answer 334

Zero electron affinity

Answer 335

Noble gases have o heat of vapourization

Answer 336

It decreases gradually down the group

Answer 337

It increases gradually down the group

Answer 338

None of these

Answer 339

Hydration energies of cations

Answer 340

Lattice energies if solids

Answer 341

Entropy of solution formation

Answer 342

Inter ionic attraction

Answer 343

Magnesium ammonium phosphate

Answer 344

Magnesium sulphates

Answer 345

Calcium sulphates

Answer 346

Ferrous ammonium sulphate

Answer 347

There is special arrangement is cell to keep the layers separate

Answer 348

Three layers are maintained at different temperatures

Answer 349

Three layers have different densities

Answer 350

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

Answer 351

None of these

Answer 352

Sulphurous acid

Answer 353

Pyrosulphuric acid

Answer 354

Carlo’s acid

Answer 355

Dithionic acid

Answer 356

Br > Cl > F

Answer 357

F > Br > Cl

Answer 358

Cl > F > Br

Answer 359

F > Cl > Br

Answer 360

Precipitate Mg metal

Answer 361

Have no effect

Answer 362

Leads to the dissolution of beryllium metal

Answer 363

Precipitate Mg

Answer 364

Hydrating sand and gravel mixed with cement

Answer 365

Converting sand into silici acid

Answer 366

Developing interlocking needle like crystals of hydrated silicates

Answer 367

Keeping it cool

Answer 368

F₂ > Cl₂ > Br₂ > I₂

Answer 369

I₂ > Br₂ > Cl₂ > F₂

Answer 370

Br₂ > Cl₂ > F₂ > I₂

Answer 371

Cl₂ > Br₂ > I₂ > F₂

Answer 372

Fluorine is highly reactive

Answer 373

HF molecules form intermolecular H-bonds

Answer 374

Fluorine atom is smaller in size

Answer 375

HF is the weakest acid

Answer 376

Energy dissociation

Answer 377

High atomic number

Answer 378

Hydration energy of ion

Answer 379

Electron affinity

Answer 380

Electrolytic methods

Answer 381

Reduction methods

Answer 382

Displacement methods

Answer 383

Double decomposition methods

Answer 384

NS₂, nP₄

Answer 385

nS₂, nP₆

Answer 386

nS₂, nP₃

Answer 387

ns₂, nP₅

Answer 388

H. bonding

Answer 389

Strongest vanderwaal’s force

Answer 390

None of these

Answer 391

Dipole-dipole forces

Answer 392

Decrease in resistance with increase in temperature

Answer 393

Decease in resistance with intensity of light

Answer 394

Increase in resistance with increase in temperature

Answer 395

Different resistance under different circumstance

Answer 396

Acid decomposes water

Answer 397

Acid forms hydrates with water

Answer 398

It hydrolyses the acid

Answer 399

It decomposes the acid

Answer 400

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

Answer 401

Noble gases are all dense gases

Answer 402

Noble gases will all burn in pure oxygen

Answer 403

None of these

Answer 404

It is used as fire proof in textile

Answer 405

It is used in the formation white cement

Answer 406

It is as filter for soap

Answer 407

It is used furniture polish

Answer 408

Plaster of Paris is obtained by partial oxidation of gypsum

Answer 409

Gypsum contains a lower percentage of calcium than plaster of pairs

Answer 410

Gypsum is obtained by heating plaster of pairs

Answer 411

Plaster of Pairs can be obtained by partial oxidation of gypsum

Answer 412

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

Answer 413

Ionic character of alkali metal halides decreases down the group

Answer 414

Sodium is the most abundant metallic element in sea water

Answer 415

Melting and boiling points of alkali metals decrease down the group

Answer 416

Ca₃(PO₄)₂

Answer 417

Sulphur dioxide

Answer 418

Carbon dioxide

Answer 419

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer 420

The lattice energy of BaSO₄ is more than its hydration energy

Answer 421

Both a and b

Answer 422

The lattice energy has no role to play in solubility

Answer 423

None of these

Answer 424

Bauxite is less impure

Answer 425

Bauxite is available in large quantity

Answer 426

Bauxite contains maximum of Al

Answer 427

Of easy extraction of Al from it

Answer 428

Tetrahedral, acidic

Answer 429

Linear, basic

Answer 430

Angular, disc

Answer 431

Linear acidic

Answer 432

Some nitrogen molecules analogous to O₂

Answer 433

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Answer 434

Diamagnetic

Answer 435

Antiferromagnetic

Answer 436

Paramagnetic

Answer 437

Ferromagnetic

Answer 438

Br is more reactive than Cl₂

Answer 439

Iodine is a solid

Answer 440

None of these

Answer 441

Cl₂ is more insoluble in water

Answer 442

Atomic radius

Answer 443

Electro negativity

Answer 444

Ionization energy

Answer 445

Hypo phosphorous acid

Answer 446

Pyro phosphoric acid

Answer 447

Metaphosphoric acid

Answer 448

Orthophosphoric acid

Answer 449

The first ionization energy

Answer 450

Ionic character of the compound

Answer 451

The basic character of the oxides

Answer 452

The stability of +2 oxidation state

Answer 453

Heavy metals

Answer 454

Noble gases

Answer 455

Light metals

Answer 456

Half-life of Rn is only 3-8 days

Answer 457

HE is used in producing very low temperatures

Answer 458

Ar is used in electric bulbs

Answer 459

Ne is obtained during radioactive disintegration

Answer 460

There is a regular gradation of properties from top to bottom

Answer 461

Marked change of properties

Answer 462

Abrupt change of properties

Answer 463

Whole group consist of non-metals

Answer 464

Various forms

Answer 465

Diatomic molecules

Answer 466

Monoatomic molecules

Answer 467

Cannot be predicted

Answer 468

Ionic and liquid

Answer 469

None of these

Answer 470

Ionic and gas

Answer 471

Covalent and liquid

Answer 472

Chalcopyrites

Answer 473

O₂ and He

Answer 474

O₂ and Ar

Answer 475

O₂ and CO₂

Answer 476

CO₂ and Ar

Answer 477

In the atmosphere

Answer 478

As salts in ponds

Answer 479

It oxidizes lead sulphides

Answer 480

It cannot act as a bleaching agent

Answer 481

It oxidizes potassium iodide

Answer 482

It oxidizes mercury

Answer 483

Na₃AlO₃

Answer 484

Na₂Al(OH)₄

Answer 485

Al₂(OH)₄

Answer 486

Solvated electrons

Answer 487

Sodium amide

Answer 488

Sodium hydride

Answer 489

Sodium atoms

Answer 490

Sodium persulphate

Answer 491

Sodiums sulphates

Answer 492

Sodium sulphides

Answer 493

Sodium thiosulphate

Answer 494

Drying agents

Answer 495

Oxidizing agents

Answer 496

Reducing agents

Answer 497

Oxidizing as well as reducing agents

Answer 498

Monoatomic

Answer 499

Polyatomic

Answer 500

All of these

Answer 501

Variable trend

Answer 502

Highly soluble in water

Answer 503

Insoluble in water

Answer 504

Less soluble in water

Answer 505

Tetrahedral

Answer 506

None of these

Answer 507

Distorted octahedral

Answer 508

Thionyl chloride

Answer 509

Sulphur monochloride

Answer 510

Sulphur tetrachloride

Answer 511

Sulphuryl chloride

Answer 512

Large size

Answer 513

High ionization potential

Answer 514

Low ionization potential

Answer 515

Low electron affinity

Answer 516

Reducing agent

Answer 517

All the three

Answer 518

Oxidizing agent

Answer 519

Smaller ionic radii

Answer 520

Greater hardness

Answer 521

Lower ionization energies

Answer 522

Highest boiling points

Answer 523

Phosphorous acid

Answer 524

Hypo phosphorous acid

Answer 525

Hypo phosphoric acid

Answer 526

Orthophosphoric acid

Answer 527

Nitrogen is highly soluble in water

Answer 528

Nitrogen is much less soluble in blood than helium

Answer 529

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

Answer 530

Helium is much less soluble in blood than nitrogen

Answer 531

The ratio of their charge to size is nearly the same

Answer 532

Both are found together in nature

Answer 533

Both have similar electronic configurations

Answer 534

Both have nearly the same size

Answer 535

None of these

Answer 536

Weak acid and weak base

Answer 537

Weak acid and strong base

Answer 538

Strong acid and weak base

Answer 539

Strong acid and strong base

Answer 540

Gain 2 electrons

Answer 541

Lose 2 electrons

Answer 542

Lose 3 electrons

Answer 543

Gain 3 electrons

Answer 544

It is a strong reducing agent

Answer 545

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 546

It is more electropositive than sodium

Answer 547

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

Answer 548

Prolonged electrolysis of water

Answer 549

Dissolving heavy salt in water

Answer 550

Simple distillation of water

Answer 551

Removing impurities of calcium and magnesium form water

Answer 552

U₂>Br₂>I₂>F₂

Answer 553

I₂>Br₂>U₂>F₂

Answer 554

I₂>F₂>Br₂>U₂

Answer 555

F₂>Cl₂>Br₂>I2

Answer 556

Nitrosyl chloride

Answer 557

Phosphorus trichloride

Answer 558

Hyponitrous acid

Answer 559

Nitrogen trichloride

Answer 560

A sulphate

Answer 561

A carbonate

Answer 562

Calcium oxide

Answer 563

Hypochlorous acid

Answer 564

Castner Kellner cell

Answer 565

Down’s cell

Answer 566

Castner cell

Answer 567

Solvay process

Answer 568

Coordinate

Answer 569

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

Answer 570

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

Answer 571

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

Answer 572

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

Answer 573

Strongly bond valence electrons

Answer 574

Small ionic size

Answer 575

Large atomic size

Answer 576

Metallic properties

Answer 577

Si > Mg > Al > Na

Answer 578

Mg > Na > Al > Si

Answer 579

Na > Mg > Al > Si

Answer 580

Al > Mg > Na > Si

Answer 581

Calcium carbonate

Answer 582

Sodium bicarbonate

Answer 583

Calcium oxide

Answer 584

Sodium carbonate

Answer 585

It has highest electronegativity

Answer 586

It restricts to oxidation state – 1 only

Answer 587

It is more reactive than other halogens

Answer 588

It has highest first ionization energy

Answer 589

Carbonates of Na, K, NH₄ are soluble in water

Answer 590

Carbonates of Ca, Ba, Sr are soluble in water

Answer 591

Basic carbonates of Mg and Cu are soluble in water

Answer 592

Li₂CO₃ is soluble in water

Answer 593

Small size of fluorine

Answer 594

Non-metallic nature of fluorine

Answer 595

More electro negativity of fluorine

Answer 596

More electron repulsion in fluorine

Answer 597

Mass number

Answer 598

Atomic number

Answer 599

Atomic mass

Answer 600

Isotopic number

Answer 601

Prismatic sulphur

Answer 602

Rhombic sulphur

Answer 603

Monoclinic sulphur

Answer 604

Plastic sulphur

Answer 605

Mixture of argon and oxygen

Answer 606

Mixture of neon and oxygen

Answer 607

Mixture of xenon and nitrogen

Answer 608

Mixture of helium and oxygen

Answer 609

H₂B₄O₇

Answer 610

None of these

Answer 611

Nitride ion

Answer 612

Chloride ion

Answer 613

Sodium ion

Answer 614

Fluoride ion

Answer 615

Tri-calcium silicate

Answer 616

Diclacium silicate

Answer 617

Tri-calcium aluminate

Answer 618

Tetra calcium aluminoferrite

Answer 619

Iron oxide

Answer 620

Iodine solution

Answer 621

Electro negativity

Answer 622

Melting point

Answer 623

First ionization energy

Answer 624

Ionic radius

Answer 625

Potassium and magnesium

Answer 626

Magnesium and chlorine

Answer 627

Potassium only

Answer 628

Magnesium only

Answer 629

Flint glass

Answer 630

Soda glass

Answer 631

Crooke’s glass

Answer 632

Borosilicate glass

Answer 633

Colourless

Answer 634

Radish brown

Answer 635

Bluish green

Answer 636

Haemoglobin

Answer 637

Chlorophyll

Answer 638

Aluminum and silicon

Answer 639

Proton and silicon

Answer 640

Gallium and Germanium

Answer 641

Iron and sulphur

Answer 642

Cloth printing

Answer 643

Glass printing

Answer 644

Leather printing

Answer 645

Paper printing

Answer 646

Sulphuric acid

Answer 647

Carlo’s acid

Answer 648

Marshall’s acid

Answer 649

None of these

Answer 650

Frank land and Lockyer

Answer 651

Rutherford

Answer 652

Low first ionization energy

Answer 653

Small size

Answer 654

High dissociation energy

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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Malik Tahir

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