Chemistry The Halogens and Noble Gases Online Mcqs Test

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Question 1

1. Dilute hydrochloric acid solution cannot be concentrated by boiling beyond

Question 2

2. Common oxidation state of boron are

Question 3

3. An atom with high electro negativity has

Answer

Low ionization potential

Answer

Low electron affinity

Answer

Large size

Answer

High ionization potential

Question 4

4. Plaster of Paris is used

Answer

As a drying agent

Answer

In metallurgical process

Answer

In dentistry and surgery

Answer

As a plaster for walls

Question 5

5. In certain respects, lithium differs from other alkali metals. The main reason for this is

Answer

Hydration of Li⁺ ion

Answer

Extremely high electropositivity of Li

Answer

Small size of lithium atom and Li⁺ ion

Answer

Greater hardness of Li

Question 6

6. Electron affinity of sulphur is

Answer

More than O and Se

Answer

Less than O but more than SE

Answer

More than O but less than Se

Answer

Equal to O and Se

Question 7

7. Bromine is obtained on a commercial scale from

Answer

Carnallite

Answer

Common salt

Question 8

8. SO3 is not dissolve directly in H2O because

Answer

SO₃ is insoluble in H₂O

Answer

The reaction is highly exothermic

Answer

The reaction does not go to completion

Answer

The reaction is quite slow

Question 9

9. The noble gases consist of

Answer

Triatomic molecules

Answer

Atoms linked by weak bonds

Answer

Diatomic molecules

Answer

Single free atoms

Question 10

10. In the manufacture of bromine form sea water, the mother liquor containing bromides is treated with

Answer

Sulphur dioxide

Answer

Carbon dioxide

Question 11

11. Which of the following halogens dose not form oxy acid?

Question 12

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

Question 13

13. Which is the most volatile compound?

Question 14

14. Helium-oxygen mixture is used by deep sea divers in preference to nitrogen-oxygen mixture because

Answer

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

Answer

Nitrogen is much less soluble in blood than helium

Answer

Helium is much less soluble in blood than nitrogen

Answer

Nitrogen is highly soluble in water

Question 15

15. Boron compounds behave as Lewis acid because of their

Answer

Acidic nature

Answer

Covalent nature

Answer

Electron deficiency

Answer

Ionization property

Question 16

16. Halogens exist in the form of

Answer

Cannot be predicted

Answer

Various forms

Answer

Diatomic molecules

Answer

Monoatomic molecules

Question 17

17. Neon glows in discharge tube as

Question 18

18. 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 19

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

Answer

Ferromagnetic

Answer

Antiferromagnetic

Answer

Paramagnetic

Answer

Diamagnetic

Question 20

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

Answer

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer

Both a and b

Answer

The lattice energy of BaSO₄ is more than its hydration energy

Answer

The lattice energy has no role to play in solubility

Question 21

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

Answer

Greater hardness

Answer

Highest boiling points

Answer

Smaller ionic radii

Answer

Lower ionization energies

Question 22

22. Which of the following is acidic?

Question 23

23. The metal used for making radiation shield is

Question 24

24. The following has zero valency

Question 25

25. Which is true for an element R present in group 13 of the periodic table?

Answer

It is a gas at room temperature

Answer

It forms R₂O₃

Answer

It forms RX₂

Answer

It has oxidation state of +4

Question 26

26. Which of the noble gas has highest polarizabilities?

Question 27

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

Question 28

28. Which one of the following substances is used in the laboratory for a fast drying of neutral gases?

Answer

Active charcoal

Answer

Na₃PO₄

Answer

Anhydrous calcium chloride

Answer

Phosphorus pentoxidse

Question 29

29. Which one halogen can show only-1 oxidation state?

Question 30

30. Which is valence shell configuration of halogens?

Answer

ns₂, nP₅

Answer

nS₂, nP₃

Answer

NS₂, nP₄

Answer

nS₂, nP₆

Question 31

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

Answer

Decease in resistance with intensity of light

Answer

Decrease in resistance with increase in temperature

Answer

Different resistance under different circumstance

Answer

Increase in resistance with increase in temperature

Question 32

32. Indicate the correct statement

Answer

Alkali metal atom has the smallest size in its period

Answer

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

Answer

Alkali metals do not reacts with metals

Answer

Alkali metals have ns’ configuring in outermost shells

Question 33

33. Which one is the biggest ion?

Question 34

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

Answer

IV group radicals are precipitated as sulphides

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

Question 35

35. Which one of the halogen acid is a liquid?

Question 36

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

Answer

I₂>Br₂>U₂>F₂

Answer

F₂>Cl₂>Br₂>I2

Answer

I₂>F₂>Br₂>U₂

Answer

U₂>Br₂>I₂>F₂

Question 37

37. Sulphuric acid has great affinity for water because

Answer

Acid forms hydrates with water

Answer

It decomposes the acid

Answer

It hydrolyses the acid

Answer

Acid decomposes water

Question 38

38. Which of the following statements is incorrect?

Answer

Melting and boiling points of alkali metals decrease down the group

Answer

Ionic character of alkali metal halides decreases down the group

Answer

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

Answer

Sodium is the most abundant metallic element in sea water

Question 39

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

Answer

Precipitate Mg metal

Answer

Have no effect

Answer

Precipitate Mg

Answer

Leads to the dissolution of beryllium metal

Question 40

40. A Major constituent of Portland cement (except lime) is

Answer

Iron oxide

Question 41

41. Which of the following is not isoelectronic?

Question 42

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

Answer

Dissolving out unreacted silver bromide

Answer

Preventing overdeveloping and fogging

Answer

Converting silver halides to metallic silver

Answer

Reducing solubility of AgBr

Question 43

43. The most acidic of the following compounds is

Question 44

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

Answer

Calcium sulphates

Answer

Magnesium ammonium phosphate

Answer

Magnesium sulphates

Answer

Ferrous ammonium sulphate

Question 45

45. The alkali metals

Answer

Form salts which are predominantly covalent

Answer

Form salt like hydrides

Answer

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

Answer

Show increasing electro negativity from Li to Cs.

Question 46

46. Limestone is not used in which of the following manufacturing processes?

Answer

Iron from haematite

Answer

Ordinary (soda lime) glass

Answer

Phosphorus from phosphorite

Answer

Solvay process of sodium carbonate

Question 47

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

Answer

Bauxite contains maximum of Al

Answer

Bauxite is less impure

Answer

Of easy extraction of Al from it

Answer

Bauxite is available in large quantity

Question 48

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

Question 49

49. Sea weeds are important source of

Question 50

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

Answer

In the atmosphere

Answer

As salts in ponds

Question 51

51. Which one of the following reacts with hemoglobin to form carboxuhaemoglobin?

Question 52

52. Mark the correct statement

Answer

None of these

Answer

Br is more reactive than Cl₂

Answer

Cl₂ is more insoluble in water

Answer

Iodine is a solid

Question 53

53. Which is true about the electro negativity order of the following?

Question 54

54. Which halogen has application in medicines mostly?

Question 55

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

Answer

Highly soluble in water

Answer

Variable trend

Answer

Less soluble in water

Answer

Insoluble in water

Question 56

56. On heating quick lime with coke in an electric furnace, we get

Answer

Ca and CO₂

Question 57

57. 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 58

58. The halogen that is most easily reduced is

Question 59

59. If one liter of air is passed repeatedly over heated copper and magnesium till no further reduction in volume takes place, the volume finally obtained would be approximately

Question 60

60. Which of the following has greatest reducing power?

Question 61

61. LiF is insoluble in water, while NaF and KF are soluble. This is due to

Answer

Small ionic size of Li⁺

Answer

High covalent nature

Answer

High ∆H lattice

Answer

Low ∆H lattice

Question 62

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

Question 63

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

Answer

Lattice energy solids

Answer

Entropy of solution formation

Answer

Inter – ionic attraction

Answer

Hydration energies of cations

Question 64

64. Which reason best accounts for the use of helium in modern airships?

Answer

Lighter than air and cheap to produce

Answer

Expense, but a very uncreative gas

Answer

Less dense then air and not flammable

Answer

Expensive but easy to store in cylinder

Answer 145

Bond energy of fluorine is less than that of chlorine

Answer 146

Fluorine does not form oxoacid

Answer 147

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer 148

Electron affinity of chlorine is greater than that of fluorine

Answer 149

CO₃ + H₂O → H₂CO₃

Answer 150

NH₃ + H₂CO₃ → NH₄HCO₃

Answer 151

2NaOH + CO₂ → Na₂CO₃ + H₂O

Answer 152

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer 153

Hypo phosphoric acid

Answer 154

Hypo phosphorous acid

Answer 155

Phosphorous acid

Answer 156

Orthophosphoric acid

Answer 157

Coordinate

Answer 158

Lattice energy

Answer 159

Hydration energy

Answer 160

Ionization energy

Answer 161

Electron affinity

Answer 162

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

Answer 163

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

Answer 164

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

Answer 165

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

Answer 166

Boiling point

Answer 167

Ionization energy

Answer 168

Atomic radius

Answer 169

Low electronegativity

Answer 170

Low charge density

Answer 171

Lower electro positivity

Answer 172

Proton and silicon

Answer 173

Gallium and Germanium

Answer 174

Iron and sulphur

Answer 175

Aluminum and silicon

Answer 176

Carbonates of Ca, Ba, Sr are soluble in water

Answer 177

Li₂CO₃ is soluble in water

Answer 178

Carbonates of Na, K, NH₄ are soluble in water

Answer 179

Basic carbonates of Mg and Cu are soluble in water

Answer 180

Sodium hydride

Answer 181

Sodium amide

Answer 182

Solvated electrons

Answer 183

Sodium atoms

Answer 184

Al belongs to third group

Answer 185

Higher co-ordination can be achieved by Al

Answer 186

Al has high ionization energy

Answer 187

It cannot form a trimer

Answer 188

Tetrahedral

Answer 189

Na₃AlO₃

Answer 190

Na₂Al(OH)₄

Answer 191

Al₂(OH)₄

Answer 192

Oxygen family

Answer 193

Alkali metals

Answer 194

Nitrogen family

Answer 195

Loses water of crystallization

Answer 196

Absorbs moisture and remain solid

Answer 197

Absorbs moisture and turn into liquid

Answer 198

Increases the water of crystallization

Answer 199

All of these

Answer 200

Polyatomic

Answer 201

Monoatomic

Answer 202

Variation is not regular

Answer 203

Increases down the group

Answer 204

Remains unchanged

Answer 205

Decreases down the group

Answer 206

Metallic properties

Answer 207

Strongly bond valence electrons

Answer 208

Small ionic size

Answer 209

Large atomic size

Answer 210

Sodium reduces CO₂ to carbon

Answer 211

Magnallium is one alloy of Mg and zinc

Answer 212

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

Answer 213

Magnesium reacts with cold water and liberates hydrogen

Answer 214

Zero electron affinity

Answer 215

Higher I-P

Answer 216

Large size

Answer 217

HF molecules form intermolecular H-bonds

Answer 218

HF is the weakest acid

Answer 219

Fluorine is highly reactive

Answer 220

Fluorine atom is smaller in size

Answer 221

Ionic and liquid

Answer 222

None of these

Answer 223

Covalent and liquid

Answer 224

Ionic and gas

Answer 225

Borazole is nonpolar compound

Answer 226

Borazole is electron deficient compound

Answer 227

Borazole is polar compound

Answer 228

Of localized electrons in it

Answer 229

Noble gases are all dense gases

Answer 230

None of these

Answer 231

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

Answer 232

Noble gases will all burn in pure oxygen

Answer 233

Kl has high m.p.

Answer 234

Kl is soluble in benzene

Answer 235

CaO has high m.p.

Answer 236

Lattice energy of CaO is much higher than that of Kl

Answer 237

Electro negativity

Answer 238

Atomic radius

Answer 239

Ionization energy

Answer 240

None of these

Answer 241

With halogens

Answer 242

With inert gases

Answer 243

With alkali metals

Answer 244

Reducing agents

Answer 245

Oxidizing as well as reducing agents

Answer 246

Drying agents

Answer 247

Oxidizing agents

Answer 248

None of these

Answer 249

H₂B₄O₇

Answer 250

Gain 3 electrons

Answer 251

Lose 2 electrons

Answer 252

Gain 2 electrons

Answer 253

Lose 3 electrons

Answer 254

Abrupt change of properties

Answer 255

Whole group consist of non-metals

Answer 256

There is a regular gradation of properties from top to bottom

Answer 257

Marked change of properties

Answer 258

Calcried gypsum

Answer 259

Sea shells

Answer 260

A marble states

Answer 261

It is highly electronegative

Answer 262

Its molecule has a large size

Answer 263

It possess hydrogen bonding

Answer 264

It has metallic bond

Answer 265

Glass printing

Answer 266

Cloth printing

Answer 267

Leather printing

Answer 268

Paper printing

Answer 269

Al > Mg > Na > Si

Answer 270

Si > Mg > Al > Na

Answer 271

Mg > Na > Al > Si

Answer 272

Na > Mg > Al > Si

Answer 273

Nitric oxide

Answer 274

Dinitrogen tetraoxide

Answer 275

Nitrous oxide

Answer 276

Nitrogen dioxide

Answer 277

+2, +4, +6

Answer 278

-2, +2, +6

Answer 279

O > C > B > N

Answer 280

B > N > C > O

Answer 281

O > B > C > N

Answer 282

O > C > N > B

Answer 283

Cage compound

Answer 284

Liquid crystal

Answer 285

Solid solution

Answer 286

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

Answer 287

They are all diatomic and form divalent ions

Answer 288

They are all capable of exhibiting several oxidation states

Answer 289

They are all diatomic and form univalent ions

Answer 290

Oxyborates

Answer 291

Roasting lime stone

Answer 292

Reduction of calcium chloride with carbon

Answer 293

Electrolysis of molten anhydrous or fused calcium chloride

Answer 294

Electrolysis of solution of calcium chloride in water

Answer 295

Mixture of neon and oxygen

Answer 296

Mixture of helium and oxygen

Answer 297

Mixture of argon and oxygen

Answer 298

Mixture of xenon and nitrogen

Answer 299

None of these of M²⁺ ions

Answer 300

High energies of hydration of M²⁺ in solution

Answer 301

Diamagnetic nature

Answer 302

High lattice energy of M²⁺ ions in the solid state

Answer 303

It restricts to oxidation state – 1 only

Answer 304

It has highest E.N

Answer 305

It has highest first I.E

Answer 306

It is more reactive than other halogens

Answer 307

CaCN₂ + C

Answer 308

Ca(CN)₂ + C

Answer 309

CaC₂ + C

Answer 310

Phosphorus

Answer 311

Melting point

Answer 312

Ionic radius

Answer 313

Electro negativity

Answer 314

First ionization energy

Answer 315

Iodine solution

Answer 316

Marshall’s acid

Answer 317

None of these

Answer 318

Sulphuric acid

Answer 319

Carlo’s acid

Answer 320

O₂ and CO₂

Answer 321

O₂ and He

Answer 322

CO₂ and Ar

Answer 323

O₂ and Ar

Answer 324

Radioactive

Answer 325

Metalloids

Answer 326

Non-metals

Answer 327

Polymorphic

Answer 328

The colour of picture

Answer 329

The fixation of picture

Answer 330

Developing picture

Answer 331

Picture printed

Answer 332

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

Answer 333

They contain only one electron in their outermost shell

Answer 334

Their ionization potential is less than that of other elements

Answer 335

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

Answer 336

None of these

Answer 337

Some nitrogen molecules analogous to O₂

Answer 338

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Answer 339

Has the highest heat of vaporization

Answer 340

Has the largest size

Answer 341

In the most readily available gas

Answer 342

Has the lowest ionization enthalpy

Answer 343

It restricts to oxidation state – 1 only

Answer 344

It has highest first ionization energy

Answer 345

It is more reactive than other halogens

Answer 346

It has highest electronegativity

Answer 347

9, 17, 35, 53

Answer 348

12, 20, 56, 88

Answer 349

37, 19, 3, 55

Answer 350

1, 12, 30, 4, 62

Answer 351

None of these

Answer 352

HCl is formed in moist air

Answer 353

It is highly hygroscopic

Answer 354

It is very volatile

Answer 355

It is covalent

Answer 356

J.J Thomson

Answer 357

Frank land

Answer 358

The ratio of their charge to size is nearly the same

Answer 359

Both are found together in nature

Answer 360

Both have nearly the same size

Answer 361

Both have similar electronic configurations

Answer 362

Calcium oxide

Answer 363

Hypochlorous acid

Answer 364

Cannot be predicted

Answer 365

Ozone is more reactive than dioxygen

Answer 366

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

Answer 367

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 368

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

Answer 369

Magnesium and chlorine

Answer 370

Potassium only

Answer 371

Potassium and magnesium

Answer 372

Magnesium only

Answer 373

High polarisability

Answer 374

Weak van der Waals forces between atoms

Answer 375

Gaseous nature

Answer 376

Double decomposition methods

Answer 377

Reduction methods

Answer 378

Electrolytic methods

Answer 379

Displacement methods

Answer 380

It is used as fire proof in textile

Answer 381

It is used furniture polish

Answer 382

It is as filter for soap

Answer 383

It is used in the formation white cement

Answer 384

It decreases gradually down the group

Answer 385

Noble gases have o heat of vapourization

Answer 386

It increases gradually down the group

Answer 387

None of these

Answer 388

p-orbitals

Answer 389

s-orbitals

Answer 390

d-orbitals

Answer 391

Short internuclear distance

Answer 392

Absence of bond polarity

Answer 393

Multiple bond formation in the molecule

Answer 394

High bond energy

Answer 395

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 396

It is a strong reducing agent

Answer 397

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

Answer 398

It is more electropositive than sodium

Answer 399

Calcium oxide

Answer 400

Sodium carbonate

Answer 401

Sodium bicarbonate

Answer 402

Calcium carbonate

Answer 403

‘Li’ is not effected by air

Answer 404

‘Li’ has a great tendency to form hydrates

Answer 405

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

Answer 406

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 407

Pyrosulphuric acid

Answer 408

Dithionic acid

Answer 409

Sulphurous acid

Answer 410

Carlo’s acid

Answer 411

It reacts with chlorine gas

Answer 412

It is used in soda water

Answer 413

It reacts with fats to form soap

Answer 414

It corrodes the organic tissues

Answer 415

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

Answer 416

Elemental Na is a strong oxidizing agent

Answer 417

Elemental Na is easily oxidized

Answer 418

Elemental Na is insoluble in NH₃

Answer 419

Half-life of Rn is only 3-8 days

Answer 420

HE is used in producing very low temperatures

Answer 421

Ne is obtained during radioactive disintegration

Answer 422

Ar is used in electric bulbs

Answer 423

Ionization energy

Answer 424

Atomic radius

Answer 425

Boiling point

Answer 426

Sodium atoms

Answer 427

Sodium amide

Answer 428

Sodium hydride

Answer 429

Solvated electrons

Answer 430

Distorted octahedral

Answer 431

None of these

Answer 432

Tetrahedral

Answer 433

Weak acid and weak base

Answer 434

Strong acid and strong base

Answer 435

Strong acid and weak base

Answer 436

Weak acid and strong base

Answer 437

Bluish green

Answer 438

Radish brown

Answer 439

Colourless

Answer 440

Both oxidized and reduced

Answer 441

Reducing agents

Answer 442

Both oxidizing and reducing agents

Answer 443

Hydrolyzing agents

Answer 444

Oxidizing agents

Answer 445

Sulphur monochloride

Answer 446

Thionyl chloride

Answer 447

Sulphuryl chloride

Answer 448

Sulphur tetrachloride

Answer 449

Rhombic sulphur

Answer 450

Prismatic sulphur

Answer 451

Monoclinic sulphur

Answer 452

Plastic sulphur

Answer 453

Small size

Answer 454

Low first ionization energy

Answer 455

High dissociation energy

Answer 456

Hypo phosphorous acid

Answer 457

Pyro phosphoric acid

Answer 458

Orthophosphoric acid

Answer 459

Metaphosphoric acid

Answer 460

Keeping it cool

Answer 461

Hydrating sand and gravel mixed with cement

Answer 462

Developing interlocking needle like crystals of hydrated silicates

Answer 463

Converting sand into silici acid

Answer 464

All the halogens react with noble gases to form their halides

Answer 465

All are non-metals

Answer 466

All the halogens have electronic configuration ns2P5

Answer 467

They have high electron affinity and ionization energy

Answer 468

Cl₂ > Br₂ > I₂ > F₂

Answer 469

F₂ > Cl₂ > Br₂ > I₂

Answer 470

Br₂ > Cl₂ > F₂ > I₂

Answer 471

I₂ > Br₂ > Cl₂ > F₂

Answer 472

Electron affinity

Answer 473

Heat of dissociation

Answer 474

Ionization potential

Answer 475

Heat of hydration

Answer 476

Hyponitrous acid

Answer 477

Nitrosyl chloride

Answer 478

Nitrogen trichloride

Answer 479

Phosphorus trichloride

Answer 480

Diclacium silicate

Answer 481

Tri-calcium silicate

Answer 482

Tri-calcium aluminate

Answer 483

Tetra calcium aluminoferrite

Answer 484

Alkaline earth metals

Answer 485

Alkali metals

Answer 486

Inert gases

Answer 487

Free electrons

Answer 488

Free molecules

Answer 489

Atoms of sodium and chlorine

Answer 490

There is special arrangement is cell to keep the layers separate

Answer 491

Three layers have different densities

Answer 492

Three layers are maintained at different temperatures

Answer 493

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

Answer 494

To prevent the action of water and salt

Answer 495

Mark the ship lighter

Answer 496

Keep away the sharks

Answer 497

Prevent puncturing by under sea rock

Answer 498

Ca₃(PO₄)₂

Answer 499

Ionic character of the compound

Answer 500

The first ionization energy

Answer 501

The basic character of the oxides

Answer 502

The stability of +2 oxidation state

Answer 503

None of these

Answer 504

Low melting point

Answer 505

High ionization energy

Answer 506

Their ions are isoelectronic with noble gases

Answer 507

Low electronegativity

Answer 508

It oxidizes lead sulphides

Answer 509

It cannot act as a bleaching agent

Answer 510

It oxidizes potassium iodide

Answer 511

It oxidizes mercury

Answer 512

Effective nuclear charge increases

Answer 513

Atomic mass increases

Answer 514

Atomic number increases

Answer 515

Additive electrons are accommodated in new electron level

Answer 516

Gypsum contains a lower percentage of calcium than plaster of pairs

Answer 517

Plaster of Pairs can be obtained by partial oxidation of gypsum

Answer 518

Plaster of Paris is obtained by partial oxidation of gypsum

Answer 519

Gypsum is obtained by heating plaster of pairs

Answer 520

Potassium chlorate

Answer 521

Manganese dioxide

Answer 522

Mercuric oxide

Answer 523

Lead nitrate

Answer 524

Plaster of Paris

Answer 525

Epsom salt

Answer 526

It absorbs moisture

Answer 527

It change into calcium hypochlorate

Answer 528

It changes into CaCl₂ and Ca(OH)₂

Answer 529

It changes into calcium chloride and calcium chlorate

Answer 530

Sodium persulphate

Answer 531

Sodium thiosulphate

Answer 532

Sodiums sulphates

Answer 533

Sodium sulphides

Answer 534

White phosphorus

Answer 535

Violet phosphorus

Answer 536

Red phosphorus

Answer 537

Scarlet phosphorus

Answer 538

A sulphate

Answer 539

A carbonate

Answer 540

Transition elements

Answer 541

Alkali metals

Answer 542

Tetrahedral, acidic

Answer 543

Linear, basic

Answer 544

Angular, disc

Answer 545

Linear acidic

Answer 546

Castner Kellner cell

Answer 547

Solvay process

Answer 548

Castner cell

Answer 549

Down’s cell

Answer 550

Chromous chloride

Answer 551

Chromyl chloride

Answer 552

Chromic chloride

Answer 553

Atomic numbers

Answer 554

Nuclear neutron-proton number rations

Answer 555

Atomic masses

Answer 556

Nuclear masses

Answer 557

Borosilicate glass

Answer 558

Flint glass

Answer 559

Soda glass

Answer 560

Crooke’s glass

Answer 561

Haemoglobin

Answer 562

Chlorophyll

Answer 563

Energy dissociation

Answer 564

Electron affinity

Answer 565

Hydration energy

Answer 566

High atomic number

Answer 567

All the three

Answer 568

Oxidizing agent

Answer 569

Reducing agent

Answer 570

Noble gases

Answer 571

Heavy metals

Answer 572

Light metals

Answer 573

Electron affinity

Answer 574

High atomic number

Answer 575

Energy dissociation

Answer 576

Hydration energy of ion

Answer 577

Chlorine and oxygen over hot silver chlorate

Answer 578

Hydrogen chloride over phosphorus pentoxide

Answer 579

Chlorine gas over hot HgO

Answer 580

Perchloric acid (CHIO₄) over hot silver oxide

Answer 581

To increase Al production

Answer 582

To act as reducing agent

Answer 583

To protect the anodes

Answer 584

To make a conducting solution of bauxite

Answer 585

Sp-hybridisation

Answer 586

Sp³- hybridization

Answer 587

Sp³d²-hybridisation

Answer 588

Sp²-hybridisation

Answer 589

Strongest vanderwaal’s force

Answer 590

H. bonding

Answer 591

None of these

Answer 592

Dipole-dipole forces

Answer 593

F > Cl > Br

Answer 594

Br > Cl > F

Answer 595

F > Br > Cl

Answer 596

Cl > F > Br

Answer 597

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

Answer 598

None of these

Answer 599

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

Answer 600

There is no change in the nuclear charge

Answer 601

CaSO₄. 1/2H₂O

Answer 602

CaSO₄.2H₂O

Answer 603

CaSO₄. 3H₂O

Answer 604

Tetrabasic

Answer 605

Dissolving heavy salt in water

Answer 606

Prolonged electrolysis of water

Answer 607

Removing impurities of calcium and magnesium form water

Answer 608

Simple distillation of water

Answer 609

Fluoride ion

Answer 610

Sodium ion

Answer 611

Chloride ion

Answer 612

Nitride ion

Answer 613

In form of foil for wrapping

Answer 614

As an abrasive in the form of abundum

Answer 615

As an oxidizer in metallurgy

Answer 616

For preparing artificial

Answer 617

Atomic size

Answer 618

Nuclear charge

Answer 619

Atomic size and nuclear charge both

Answer 620

Atomic number

Answer 621

Sodium silicate and aluminum borosilicate

Answer 622

Sodium silicate and lead silicate

Answer 623

Sodium silicate and calcium silicate

Answer 624

Sodium borosilicate and aluminum borosilicate

Answer 625

Atomic number

Answer 626

Mass number

Answer 627

Atomic mass

Answer 628

Isotopic number

Answer 629

Sodium amide

Answer 630

Sodium nitride

Answer 631

Sodium hydride

Answer 632

Sodium azide

Answer 633

Non-metallic nature of fluorine

Answer 634

Small size of fluorine

Answer 635

More electro negativity of fluorine

Answer 636

More electron repulsion in fluorine

Answer 637

Frank land and Lockyer

Answer 638

Rutherford

Answer 639

Chlorination

Answer 640

Hydrogenation

Answer 641

Insecticide

Answer 642

Refrigerant

Answer 643

Chalcopyrites

Answer 644

Inner transition elements

Answer 645

Representative elements

Answer 646

Transition elements

Answer 647

Strong reducing agents

Answer 648

Weak reducing agents

Answer 649

Strong oxidizing agents

Answer 650

Weak oxidizing agents

Answer 651

Hydration energies of cations

Answer 652

Lattice energies if solids

Answer 653

Inter ionic attraction

Answer 654

Entropy of solution formation

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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