Chemistry The Halogens and Noble Gases Online Mcqs Test

Q: How can I prepare for Chemistry The Halogens and Noble Gases Online Mcqs Test?

You can prepare for Chemistry The Halogens and Noble Gases Online Mcqs Test by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. The oxidizing power of halogens depends upon various factors. Which are not the correct reasons?

Answer

Electron affinity

Answer

Hydration energy of ion

Answer

High atomic number

Answer

Energy dissociation

Question 2

2. The solubilities of carbonates decrease down the magnesium group due to a decrease in

Answer

Hydration energies of cations

Answer

Entropy of solution formation

Answer

Lattice energies if solids

Answer

Inter ionic attraction

Question 3

3. A clathrate may be defined as a

Answer

Cage compound

Answer

Liquid crystal

Answer

Solid solution

Question 4

4. The last orbit of argon would have electrons

Question 5

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

Question 6

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

Question 7

7. The lowest boiling point of helium is due to its

Answer

Weak van der Waals forces between atoms

Answer

Gaseous nature

Answer

High polarisability

Question 8

8. The percentage of lead in lead pencil is

Question 9

9. Sulphuric acid has great affinity for water because

Answer

Acid decomposes water

Answer

It decomposes the acid

Answer

Acid forms hydrates with water

Answer

It hydrolyses the acid

Question 10

10. Among noble gases (from He to Xe) only xenon reacts with fluorine to form stable xenon fluorides because xenon

Answer

Has the lowest ionization enthalpy

Answer

Has the largest size

Answer

In the most readily available gas

Answer

Has the highest heat of vaporization

Question 11

11. Which one halogen is radioactive?

Question 12

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

Answer

High ∆H lattice

Answer

Small ionic size of Li⁺

Answer

High covalent nature

Answer

Low ∆H lattice

Question 13

13. Which of the following is not isoelectronic?

Question 14

14. Which of the following statements is incorrect?

Answer

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

Answer

Sodium is the most abundant metallic element in sea water

Answer

Melting and boiling points of alkali metals decrease down the group

Answer

Ionic character of alkali metal halides decreases down the group

Question 15

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

Question 16

16. Which one is hygroscopic in nature?

Question 17

17. P₂O₅ is heated with water to give

Answer

Orthophosphoric acid

Answer

Hypo phosphoric acid

Answer

Hypo phosphorous acid

Answer

Phosphorous acid

Question 18

18. The halogen having highest electron affinity is

Question 19

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

Answer

Paramagnetic

Answer

Ferromagnetic

Answer

Diamagnetic

Answer

Antiferromagnetic

Question 20

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

Answer

Less dense then air and not flammable

Answer

Lighter than air and cheap to produce

Answer

Expensive but easy to store in cylinder

Answer

Expense, but a very uncreative gas

Question 21

21. When K₂O is added to water, the solution is basic because it contains a significant concentration of

Question 22

22. Which is not correct reason about the oxidizing power of halogens depending on various factors?

Answer

Electron affinity

Answer

Energy dissociation

Answer

High atomic number

Answer

Hydration energy

Question 23

23. Pyrex glass is a mixture of

Answer

Sodium silicate and aluminum borosilicate

Answer

Sodium silicate and lead silicate

Answer

Sodium borosilicate and aluminum borosilicate

Answer

Sodium silicate and calcium silicate

Question 24

24. The elements with atomic numbers 9, 17, 35, 53, 85 and all

Answer

Light metals

Answer

Heavy metals

Answer

Noble gases

Question 25

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

Answer

Precipitate Mg

Answer

Have no effect

Answer

Leads to the dissolution of beryllium metal

Answer

Precipitate Mg metal

Question 26

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

Question 27

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

Answer

Nitrogen is highly soluble in water

Answer

Nitrogen is much less soluble in blood than helium

Answer

Helium is much less soluble in blood than nitrogen

Answer

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

Question 28

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

Question 29

29. What is the atomic number (Z) of the noble gas that reacts with fluorine?

Question 30

30. Mg is an important component of which biomolecule occurring extensively in living world?

Answer

Chlorophyll

Answer

Haemoglobin

Question 31

31. Match List I with List II and select the answer using the codes given below:

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

Answer

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

Answer

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

Answer

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

Answer

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

Question 32

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

Answer

Strong acid and strong base

Answer

Weak acid and strong base

Answer

Strong acid and weak base

Answer

Weak acid and weak base

Question 33

33. Mark the correct statement

Answer

None of these

Answer

Iodine is a solid

Answer

Br is more reactive than Cl₂

Answer

Cl₂ is more insoluble in water

Question 34

34. Which halogen is most electropositive?

Question 35

35. Plaster of Paris is used

Answer

As a drying agent

Answer

In metallurgical process

Answer

As a plaster for walls

Answer

In dentistry and surgery

Question 36

36. White enamel of our teeth is

Answer

Ca₃(PO₄)₂

Question 37

37. The atomic radius increases as we move down a group because

Answer

Additive electrons are accommodated in new electron level

Answer

Atomic number increases

Answer

Effective nuclear charge increases

Answer

Atomic mass increases

Question 38

38. Sulphuric acid reacts with PCl₅ to give

Answer

Sulphur tetrachloride

Answer

Thionyl chloride

Answer

Sulphur monochloride

Answer

Sulphuryl chloride

Question 39

39. The noble gas He was discovered by

Answer

Frank land and Lockyer

Answer

Rutherford

Question 40

40. All the elements of oxygen family are

Answer

Radioactive

Answer

Metalloids

Answer

Non-metals

Answer

Polymorphic

Question 41

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

Question 42

42. Among the halogens the rare element is

Question 43

43. Which is valence shell configuration of halogens?

Answer

nS₂, nP₆

Answer

nS₂, nP₃

Answer

NS₂, nP₄

Answer

ns₂, nP₅

Question 44

44. Halogens exist in the form of

Answer

Various forms

Answer

Diatomic molecules

Answer

Cannot be predicted

Answer

Monoatomic molecules

Question 45

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

Answer

Sodium ion

Answer

Chloride ion

Answer

Nitride ion

Answer

Fluoride ion

Question 46

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

Question 47

47. Which one of the following properties of alkali metals increases in magnitude as the atomic number rises?

Answer

Melting point

Answer

First ionization energy

Answer

Ionic radius

Answer

Electro negativity

Question 48

48. How does the ionization energy of 1st group elements vary?

Answer

Decreases down the group

Answer

Increases down the group

Answer

Remains unchanged

Answer

Variation is not regular

Question 49

49. Which of the following has highest dipole moment?

Question 50

50. Among noble gases xenon gives compounds due to

Answer

Higher I-P

Answer

Zero electron affinity

Answer

Large size

Question 51

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

Question 52

52. In curing cement plasters, water is sprinkled from time to time. This helps is

Answer

Developing interlocking needle like crystals of hydrated silicates

Answer

Converting sand into silici acid

Answer

Keeping it cool

Answer

Hydrating sand and gravel mixed with cement

Question 53

53. The one which does not show variable valency is

Question 54

54. Which statement is true about IV A group

Answer

Marked change of properties

Answer

Whole group consist of non-metals

Answer

Abrupt change of properties

Answer

There is a regular gradation of properties from top to bottom

Question 55

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

Question 56

56. Strongest reducing agent is

Question 57

57. Boron compounds behave as Lewis acid because of their

Answer

Ionization property

Answer

Acidic nature

Answer

Electron deficiency

Answer

Covalent nature

Question 58

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

Answer

Na₃AlO₃

Answer

Na₂Al(OH)₄

Answer

Al₂(OH)₄

Question 59

59. Eka-aluminum and Eka-silicon are known as

Answer

Iron and sulphur

Answer

Proton and silicon

Answer

Aluminum and silicon

Answer

Gallium and Germanium

Question 60

60. 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 61

61. The shape of gaseous SnCl₂ is

Answer

Tetrahedral

Question 62

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

Answer

None of these

Question 63

63. Which of the following is most electronegative?

Question 64

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

Answer

Isotopic number

Answer

Mass number

Answer

Atomic number

Answer

Atomic mass

Answer 147

Chromous chloride

Answer 148

Chromic chloride

Answer 149

Chromyl chloride

Answer 150

Removing impurities of calcium and magnesium form water

Answer 151

Simple distillation of water

Answer 152

Prolonged electrolysis of water

Answer 153

Dissolving heavy salt in water

Answer 154

Iodine solution

Answer 155

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer 156

2NaOH + CO₂ → Na₂CO₃ + H₂O

Answer 157

NH₃ + H₂CO₃ → NH₄HCO₃

Answer 158

CO₃ + H₂O → H₂CO₃

Answer 159

There is no change in the nuclear charge

Answer 160

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

Answer 161

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

Answer 162

None of these

Answer 163

Chalcopyrites

Answer 164

Ionization energy

Answer 165

Atomic radius

Answer 166

Electro negativity

Answer 167

Oxidizing agents

Answer 168

Drying agents

Answer 169

Oxidizing as well as reducing agents

Answer 170

Reducing agents

Answer 171

It is highly hygroscopic

Answer 172

It is very volatile

Answer 173

HCl is formed in moist air

Answer 174

It is covalent

Answer 175

Metallic properties

Answer 176

Large atomic size

Answer 177

Strongly bond valence electrons

Answer 178

Small ionic size

Answer 179

Noble gases are all dense gases

Answer 180

Noble gases will all burn in pure oxygen

Answer 181

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

Answer 182

None of these

Answer 183

Sulphurous acid

Answer 184

Dithionic acid

Answer 185

Carlo’s acid

Answer 186

Pyrosulphuric acid

Answer 187

Na > Mg > Al > Si

Answer 188

Si > Mg > Al > Na

Answer 189

Mg > Na > Al > Si

Answer 190

Al > Mg > Na > Si

Answer 191

Radish brown

Answer 192

Colourless

Answer 193

Bluish green

Answer 194

It is a strong reducing agent

Answer 195

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

Answer 196

It is more electropositive than sodium

Answer 197

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 198

Displacement methods

Answer 199

Electrolytic methods

Answer 200

Double decomposition methods

Answer 201

Reduction methods

Answer 202

It forms R₂O₃

Answer 203

It has oxidation state of +4

Answer 204

It forms RX₂

Answer 205

It is a gas at room temperature

Answer 206

It is as filter for soap

Answer 207

It is used as fire proof in textile

Answer 208

It is used furniture polish

Answer 209

It is used in the formation white cement

Answer 210

Decrease in electronegativity of the elements

Answer 211

Increase in atomic size of elements

Answer 212

All of these

Answer 213

Decrease in I.P

Answer 214

Carbon dioxide

Answer 215

Sulphur dioxide

Answer 216

All of these

Answer 217

Polyatomic

Answer 218

Monoatomic

Answer 219

Plaster of Pairs can be obtained by partial oxidation of gypsum

Answer 220

Plaster of Paris is obtained by partial oxidation of gypsum

Answer 221

Gypsum is obtained by heating plaster of pairs

Answer 222

Gypsum contains a lower percentage of calcium than plaster of pairs

Answer 223

High dissociation energy

Answer 224

Small size

Answer 225

Low first ionization energy

Answer 226

Cannot be predicted

Answer 227

Mercuric oxide

Answer 228

Manganese dioxide

Answer 229

Lead nitrate

Answer 230

Potassium chlorate

Answer 231

Mixture of xenon and nitrogen

Answer 232

Mixture of argon and oxygen

Answer 233

Mixture of helium and oxygen

Answer 234

Mixture of neon and oxygen

Answer 235

Refrigerant

Answer 236

Insecticide

Answer 237

Transition elements

Answer 238

Inner transition elements

Answer 239

Representative elements

Answer 240

It increases gradually down the group

Answer 241

None of these

Answer 242

It decreases gradually down the group

Answer 243

Noble gases have o heat of vapourization

Answer 244

37, 19, 3, 55

Answer 245

1, 12, 30, 4, 62

Answer 246

12, 20, 56, 88

Answer 247

9, 17, 35, 53

Answer 248

Coordinate

Answer 249

Oxidizing agent

Answer 250

All the three

Answer 251

Reducing agent

Answer 252

Borazole is nonpolar compound

Answer 253

Of localized electrons in it

Answer 254

Borazole is polar compound

Answer 255

Borazole is electron deficient compound

Answer 256

Transition elements

Answer 257

Alkali metals

Answer 258

Common salt

Answer 259

Carnallite

Answer 260

Nitrogen trichloride

Answer 261

Phosphorus trichloride

Answer 262

Nitrosyl chloride

Answer 263

Hyponitrous acid

Answer 264

High energies of hydration of M²⁺ in solution

Answer 265

None of these of M²⁺ ions

Answer 266

Diamagnetic nature

Answer 267

High lattice energy of M²⁺ ions in the solid state

Answer 268

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

Answer 269

Ozone is more reactive than dioxygen

Answer 270

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 271

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

Answer 272

+2, +4, +6

Answer 273

-2, +2, +6

Answer 274

Phosphorus

Answer 275

Low electron affinity

Answer 276

Large size

Answer 277

High ionization potential

Answer 278

Low ionization potential

Answer 279

Gain 2 electrons

Answer 280

Lose 3 electrons

Answer 281

Gain 3 electrons

Answer 282

Lose 2 electrons

Answer 283

O₂ and He

Answer 284

CO₂ and Ar

Answer 285

O₂ and Ar

Answer 286

O₂ and CO₂

Answer 287

Form salt like hydrides

Answer 288

Form salts which are predominantly covalent

Answer 289

Show increasing electro negativity from Li to Cs.

Answer 290

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

Answer 291

Atomic radius

Answer 292

Boiling point

Answer 293

Ionization energy

Answer 294

Insoluble in water

Answer 295

Highly soluble in water

Answer 296

Less soluble in water

Answer 297

Variable trend

Answer 298

Sp³d²-hybridisation

Answer 299

Sp³- hybridization

Answer 300

Sp²-hybridisation

Answer 301

Sp-hybridisation

Answer 302

Tetrabasic

Answer 303

Plastic sulphur

Answer 304

Monoclinic sulphur

Answer 305

Rhombic sulphur

Answer 306

Prismatic sulphur

Answer 307

SO₃ is insoluble in H₂O

Answer 308

The reaction is quite slow

Answer 309

The reaction does not go to completion

Answer 310

The reaction is highly exothermic

Answer 311

It restricts to oxidation state – 1 only

Answer 312

It has highest electronegativity

Answer 313

It has highest first ionization energy

Answer 314

It is more reactive than other halogens

Answer 315

It has metallic bond

Answer 316

It is highly electronegative

Answer 317

Its molecule has a large size

Answer 318

It possess hydrogen bonding

Answer 319

H₂B₄O₇

Answer 320

None of these

Answer 321

Free electrons

Answer 322

Free molecules

Answer 323

Atoms of sodium and chlorine

Answer 324

Hypo phosphorous acid

Answer 325

Pyro phosphoric acid

Answer 326

Metaphosphoric acid

Answer 327

Orthophosphoric acid

Answer 328

Three layers are maintained at different temperatures

Answer 329

There is special arrangement is cell to keep the layers separate

Answer 330

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

Answer 331

Three layers have different densities

Answer 332

U₂>Br₂>I₂>F₂

Answer 333

I₂>Br₂>U₂>F₂

Answer 334

F₂>Cl₂>Br₂>I2

Answer 335

I₂>F₂>Br₂>U₂

Answer 336

Roasting lime stone

Answer 337

Electrolysis of solution of calcium chloride in water

Answer 338

Reduction of calcium chloride with carbon

Answer 339

Electrolysis of molten anhydrous or fused calcium chloride

Answer 340

Atomic radius

Answer 341

Boiling point

Answer 342

Ionization energy

Answer 343

Both oxidized and reduced

Answer 344

To protect the anodes

Answer 345

To increase Al production

Answer 346

To make a conducting solution of bauxite

Answer 347

To act as reducing agent

Answer 348

Decease in resistance with intensity of light

Answer 349

Increase in resistance with increase in temperature

Answer 350

Decrease in resistance with increase in temperature

Answer 351

Different resistance under different circumstance

Answer 352

Small size of fluorine

Answer 353

More electron repulsion in fluorine

Answer 354

Non-metallic nature of fluorine

Answer 355

More electro negativity of fluorine

Answer 356

Hydrogenation

Answer 357

Chlorination

Answer 358

Sodium nitride

Answer 359

Sodium amide

Answer 360

Sodium hydride

Answer 361

Sodium azide

Answer 362

Atomic size

Answer 363

Atomic size and nuclear charge both

Answer 364

Nuclear charge

Answer 365

Atomic number

Answer 366

Oxygen family

Answer 367

Alkali metals

Answer 368

Nitrogen family

Answer 369

Sodium carbonate

Answer 370

Calcium carbonate

Answer 371

Calcium oxide

Answer 372

Sodium bicarbonate

Answer 373

Triatomic molecules

Answer 374

Atoms linked by weak bonds

Answer 375

Diatomic molecules

Answer 376

Single free atoms

Answer 377

It is more reactive than other halogens

Answer 378

It has highest E.N

Answer 379

It restricts to oxidation state – 1 only

Answer 380

It has highest first I.E

Answer 381

CaSO₄. 3H₂O

Answer 382

CaSO₄. 1/2H₂O

Answer 383

CaSO₄.2H₂O

Answer 384

Potassium and magnesium

Answer 385

Potassium only

Answer 386

Magnesium and chlorine

Answer 387

Magnesium only

Answer 388

Their ionization potential is less than that of other elements

Answer 389

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

Answer 390

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

Answer 391

They contain only one electron in their outermost shell

Answer 392

Sodium amide

Answer 393

Sodium hydride

Answer 394

Sodium atoms

Answer 395

Solvated electrons

Answer 396

Iron oxide

Answer 397

A carbonate

Answer 398

A sulphate

Answer 399

Bauxite is available in large quantity

Answer 400

Of easy extraction of Al from it

Answer 401

Bauxite contains maximum of Al

Answer 402

Bauxite is less impure

Answer 403

Dissolving out unreacted silver bromide

Answer 404

Preventing overdeveloping and fogging

Answer 405

Reducing solubility of AgBr

Answer 406

Converting silver halides to metallic silver

Answer 407

Linear acidic

Answer 408

Angular, disc

Answer 409

Tetrahedral, acidic

Answer 410

Linear, basic

Answer 411

Sodiums sulphates

Answer 412

Sodium persulphate

Answer 413

Sodium thiosulphate

Answer 414

Sodium sulphides

Answer 415

Diclacium silicate

Answer 416

Tri-calcium silicate

Answer 417

Tetra calcium aluminoferrite

Answer 418

Tri-calcium aluminate

Answer 419

Weak reducing agents

Answer 420

Weak oxidizing agents

Answer 421

Strong oxidizing agents

Answer 422

Strong reducing agents

Answer 423

Lower ionization energies

Answer 424

Greater hardness

Answer 425

Highest boiling points

Answer 426

Smaller ionic radii

Answer 427

The lattice energy has no role to play in solubility

Answer 428

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer 429

Both a and b

Answer 430

The lattice energy of BaSO₄ is more than its hydration energy

Answer 431

It is used in soda water

Answer 432

It corrodes the organic tissues

Answer 433

It reacts with fats to form soap

Answer 434

It reacts with chlorine gas

Answer 435

Lower electro positivity

Answer 436

Low charge density

Answer 437

Low electronegativity

Answer 438

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Answer 439

Some nitrogen molecules analogous to O₂

Answer 440

None of these

Answer 441

J.J Thomson

Answer 442

Frank land

Answer 443

Iron from haematite

Answer 444

Ordinary (soda lime) glass

Answer 445

Solvay process of sodium carbonate

Answer 446

Phosphorus from phosphorite

Answer 447

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer 448

Bond energy of fluorine is less than that of chlorine

Answer 449

Fluorine does not form oxoacid

Answer 450

Electron affinity of chlorine is greater than that of fluorine

Answer 451

Half-life of Rn is only 3-8 days

Answer 452

Ar is used in electric bulbs

Answer 453

Ne is obtained during radioactive disintegration

Answer 454

HE is used in producing very low temperatures

Answer 455

Distorted octahedral

Answer 456

Tetrahedral

Answer 457

None of these

Answer 458

Sodium atoms

Answer 459

Sodium amide

Answer 460

Sodium hydride

Answer 461

Solvated electrons

Answer 462

Ferrous ammonium sulphate

Answer 463

Magnesium ammonium phosphate

Answer 464

Calcium sulphates

Answer 465

Magnesium sulphates

Answer 466

For preparing artificial

Answer 467

As an abrasive in the form of abundum

Answer 468

In form of foil for wrapping

Answer 469

As an oxidizer in metallurgy

Answer 470

O > C > N > B

Answer 471

O > C > B > N

Answer 472

O > B > C > N

Answer 473

B > N > C > O

Answer 474

High bond energy

Answer 475

Absence of bond polarity

Answer 476

Multiple bond formation in the molecule

Answer 477

Short internuclear distance

Answer 478

The colour of picture

Answer 479

Picture printed

Answer 480

Developing picture

Answer 481

The fixation of picture

Answer 482

Oxyborates

Answer 483

CaCN₂ + C

Answer 484

CaC₂ + C

Answer 485

Ca(CN)₂ + C

Answer 486

Absorbs moisture and turn into liquid

Answer 487

Loses water of crystallization

Answer 488

Absorbs moisture and remain solid

Answer 489

Increases the water of crystallization

Answer 490

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

Answer 491

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 492

‘Li’ has a great tendency to form hydrates

Answer 493

‘Li’ is not effected by air

Answer 494

Elemental Na is insoluble in NH₃

Answer 495

Elemental Na is a strong oxidizing agent

Answer 496

Elemental Na is easily oxidized

Answer 497

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

Answer 498

Plaster of Paris

Answer 499

Epsom salt

Answer 500

Higher co-ordination can be achieved by Al

Answer 501

Al has high ionization energy

Answer 502

Al belongs to third group

Answer 503

It cannot form a trimer

Answer 504

Ionization energy

Answer 505

Lattice energy

Answer 506

Hydration energy

Answer 507

Electron affinity

Answer 508

Alkali metal atom has the smallest size in its period

Answer 509

Alkali metals do not reacts with metals

Answer 510

Alkali metals have ns’ configuring in outermost shells

Answer 511

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

Answer 512

Chlorine gas over hot HgO

Answer 513

Chlorine and oxygen over hot silver chlorate

Answer 514

Hydrogen chloride over phosphorus pentoxide

Answer 515

Perchloric acid (CHIO₄) over hot silver oxide

Answer 516

Lattice energy solids

Answer 517

Hydration energies of cations

Answer 518

Entropy of solution formation

Answer 519

Inter – ionic attraction

Answer 520

I₂ > Br₂ > Cl₂ > F₂

Answer 521

Cl₂ > Br₂ > I₂ > F₂

Answer 522

F₂ > Cl₂ > Br₂ > I₂

Answer 523

Br₂ > Cl₂ > F₂ > I₂

Answer 524

Heat of dissociation

Answer 525

Heat of hydration

Answer 526

Electron affinity

Answer 527

Ionization potential

Answer 528

Crooke’s glass

Answer 529

Borosilicate glass

Answer 530

Soda glass

Answer 531

Flint glass

Answer 532

Hypochlorous acid

Answer 533

Calcium oxide

Answer 534

p-orbitals

Answer 535

s-orbitals

Answer 536

d-orbitals

Answer 537

Atomic numbers

Answer 538

Nuclear neutron-proton number rations

Answer 539

Nuclear masses

Answer 540

Atomic masses

Answer 541

None of these

Answer 542

With halogens

Answer 543

With alkali metals

Answer 544

With inert gases

Answer 545

Ionic character of the compound

Answer 546

The stability of +2 oxidation state

Answer 547

The first ionization energy

Answer 548

The basic character of the oxides

Answer 549

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

Answer 550

Magnallium is one alloy of Mg and zinc

Answer 551

Magnesium reacts with cold water and liberates hydrogen

Answer 552

Sodium reduces CO₂ to carbon

Answer 553

Paper printing

Answer 554

Cloth printing

Answer 555

Leather printing

Answer 556

Glass printing

Answer 557

F > Cl > Br

Answer 558

F > Br > Cl

Answer 559

Br > Cl > F

Answer 560

Cl > F > Br

Answer 561

Ionic and gas

Answer 562

Covalent and liquid

Answer 563

None of these

Answer 564

Ionic and liquid

Answer 565

Down’s cell

Answer 566

Castner cell

Answer 567

Solvay process

Answer 568

Castner Kellner cell

Answer 569

A marble states

Answer 570

Calcried gypsum

Answer 571

Sea shells

Answer 572

None of these

Answer 573

Marshall’s acid

Answer 574

Carlo’s acid

Answer 575

Sulphuric acid

Answer 576

Inert gases

Answer 577

Alkaline earth metals

Answer 578

Alkali metals

Answer 579

None of these

Answer 580

Fluorine atom is smaller in size

Answer 581

Fluorine is highly reactive

Answer 582

HF is the weakest acid

Answer 583

HF molecules form intermolecular H-bonds

Answer 584

Oxidizing agents

Answer 585

Hydrolyzing agents

Answer 586

Both oxidizing and reducing agents

Answer 587

Reducing agents

Answer 588

Violet phosphorus

Answer 589

Scarlet phosphorus

Answer 590

Red phosphorus

Answer 591

White phosphorus

Answer 592

As salts in ponds

Answer 593

In the atmosphere

Answer 594

None of these

Answer 595

Dipole-dipole forces

Answer 596

H. bonding

Answer 597

Strongest vanderwaal’s force

Answer 598

Lattice energy of CaO is much higher than that of Kl

Answer 599

Kl is soluble in benzene

Answer 600

CaO has high m.p.

Answer 601

Kl has high m.p.

Answer 602

Ca and CO₂

Answer 603

Both have nearly the same size

Answer 604

Both are found together in nature

Answer 605

The ratio of their charge to size is nearly the same

Answer 606

Both have similar electronic configurations

Answer 607

They are all diatomic and form divalent ions

Answer 608

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

Answer 609

They are all diatomic and form univalent ions

Answer 610

They are all capable of exhibiting several oxidation states

Answer 611

Small size of lithium atom and Li⁺ ion

Answer 612

Hydration of Li⁺ ion

Answer 613

Extremely high electropositivity of Li

Answer 614

Greater hardness of Li

Answer 615

Equal to O and Se

Answer 616

More than O and Se

Answer 617

More than O but less than Se

Answer 618

Less than O but more than SE

Answer 619

Their ions are isoelectronic with noble gases

Answer 620

Low electronegativity

Answer 621

High ionization energy

Answer 622

Low melting point

Answer 623

All the halogens have electronic configuration ns2P5

Answer 624

All are non-metals

Answer 625

They have high electron affinity and ionization energy

Answer 626

All the halogens react with noble gases to form their halides

Answer 627

Sulphur is present in the mixture as impurity

Answer 628

III group radicals are precipitated as hydroxides

Answer 629

IV group radicals are precipitated as sulphides

Answer 630

Of the oxidation of H₂S gas by some acid radicals

Answer 631

Reaction with NaOH

Answer 632

Presence of NH₃

Answer 633

Reaction with CO₂

Answer 634

Reaction with brine solution

Answer 635

It oxidizes mercury

Answer 636

It oxidizes lead sulphides

Answer 637

It cannot act as a bleaching agent

Answer 638

It oxidizes potassium iodide

Answer 639

Anhydrous calcium chloride

Answer 640

Na₃PO₄

Answer 641

Active charcoal

Answer 642

Phosphorus pentoxidse

Answer 643

Prevent puncturing by under sea rock

Answer 644

To prevent the action of water and salt

Answer 645

Mark the ship lighter

Answer 646

Keep away the sharks

Answer 647

Basic carbonates of Mg and Cu are soluble in water

Answer 648

Carbonates of Ca, Ba, Sr are soluble in water

Answer 649

Carbonates of Na, K, NH₄ are soluble in water

Answer 650

Li₂CO₃ is soluble in water

Answer 651

Nitrous oxide

Answer 652

Nitric oxide

Answer 653

Dinitrogen tetraoxide

Answer 654

Nitrogen dioxide

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

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

Chemistry

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

Key Preparation Tips:

More Related Resources

Malik Tahir

2 Comments

Leave a Reply Cancel reply

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:

More Related Resources

Latest Updates

Malik Tahir

2 Comments

Leave a Reply Cancel reply