Chemistry The Halogens and Noble Gases Online Mcqs Test

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Question 1

1. The oxide of which of the following elements will be acidic in character

Question 2

2. When a colourless gas is passed through bromine water only decolourisation takes place the gas is

Question 3

3. Which of the noble gas has highest polarizabilities?

Question 4

4. Which of the following compounds is explosive in nature?

Answer

Phosphorus trichloride

Answer

Hyponitrous acid

Answer

Nitrosyl chloride

Answer

Nitrogen trichloride

Question 5

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

Answer

It changes into CaCl₂ and Ca(OH)₂

Answer

It change into calcium hypochlorate

Answer

It changes into calcium chloride and calcium chlorate

Answer

It absorbs moisture

Question 6

6. Mark the element which shows only one oxidation state is its compounds

Question 7

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

Question 8

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

Question 9

9. Which one has highest electron affinity?

Question 10

10. Because of its small size and due to restriction of its valence shell to an octet fluorine differs from other halogens, which behavior of fluorine is incorrect?

Answer

It restricts to oxidation state – 1 only

Answer

It has highest first I.E

Answer

It has highest E.N

Answer

It is more reactive than other halogens

Question 11

11. The following has zero valency

Question 12

12. Mark the correct statement

Answer

Iodine is a solid

Answer

Cl₂ is more insoluble in water

Answer

Br is more reactive than Cl₂

Answer

None of these

Question 13

13. Freon-12 is used as a

Answer

Insecticide

Answer

Refrigerant

Question 14

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

Question 15

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

Question 16

16. I₂ is solid at room temperature because

Answer

It has metallic bond

Answer

It possess hydrogen bonding

Answer

It is highly electronegative

Answer

Its molecule has a large size

Question 17

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

Answer

Converting silver halides to metallic silver

Answer

Reducing solubility of AgBr

Answer

Dissolving out unreacted silver bromide

Answer

Preventing overdeveloping and fogging

Question 18

18. Strongest reducing agent is

Question 19

19. Which of the following is most electronegative?

Question 20

20. What causes nitrogen to be chemically inert?

Answer

Short internuclear distance

Answer

Absence of bond polarity

Answer

Multiple bond formation in the molecule

Answer

High bond energy

Question 21

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

Answer

Hydration of Li⁺ ion

Answer

Greater hardness of Li

Answer

Small size of lithium atom and Li⁺ ion

Answer

Extremely high electropositivity of Li

Question 22

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

Answer

1, 12, 30, 4, 62

Answer

9, 17, 35, 53

Answer

12, 20, 56, 88

Answer

37, 19, 3, 55

Question 23

23. The halogen which has only one oxidation state is

Question 24

24. Which one of these is most reactive?

Question 25

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

Answer

Phosphorus

Question 26

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

Question 27

27. Fluorine differs from other halogens due to

Answer

High dissociation energy

Answer

Small size

Answer

Low first ionization energy

Question 28

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

Question 29

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

Answer

Bauxite is less impure

Answer

Bauxite is available in large quantity

Answer

Bauxite contains maximum of Al

Answer

Of easy extraction of Al from it

Question 30

30. Which statement is correct about halogens?

Answer

They are all diatomic and form univalent ions

Answer

They are all diatomic and form divalent ions

Answer

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

Answer

They are all capable of exhibiting several oxidation states

Question 31

31. The noble gas forming the maximum number of compounds

Question 32

32. Which of the following has highest dipole moment?

Question 33

33. In the Hoop’s process for refining of Al the fused materials form three different layers and they remain separated during electrolysis also. This is because

Answer

Three layers are maintained at different temperatures

Answer

There is special arrangement is cell to keep the layers separate

Answer

Three layers have different densities

Answer

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

Question 34

34. Variable valency is characteristic of

Answer

Alkali metals

Answer

Transition elements

Question 35

35. Electron affinity depends on

Answer

Nuclear charge

Answer

Atomic size

Answer

Atomic number

Answer

Atomic size and nuclear charge both

Question 36

36. The atomic numbers of four elements are given below. Which one is an alkaline earth metal?

Question 37

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

Answer

Phosphorus from phosphorite

Answer

Iron from haematite

Answer

Ordinary (soda lime) glass

Answer

Solvay process of sodium carbonate

Question 38

38. Identify the correct statement

Answer

Gypsum is obtained by heating plaster of pairs

Answer

Plaster of Paris is obtained by partial oxidation of gypsum

Answer

Plaster of Pairs can be obtained by partial oxidation of gypsum

Answer

Gypsum contains a lower percentage of calcium than plaster of pairs

Question 39

39. Electropositive character increase down the group due to

Answer

Increase in atomic size of elements

Answer

Decrease in I.P

Answer

Decrease in electronegativity of the elements

Answer

All of these

Question 40

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

Question 41

41. Polyanion formation is maximum in

Question 42

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

Answer

Converting sand into silici acid

Answer

Hydrating sand and gravel mixed with cement

Answer

Developing interlocking needle like crystals of hydrated silicates

Answer

Keeping it cool

Question 43

43. Which of the following is most volatile?

Question 44

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

Answer

Anhydrous calcium chloride

Answer

Active charcoal

Answer

Na₃PO₄

Answer

Phosphorus pentoxidse

Question 45

45. Among the fluorides listed below the one which does not exist?

Question 46

46. Which of the following statements is not correct for a noble gas?

Answer

Ne is obtained during radioactive disintegration

Answer

HE is used in producing very low temperatures

Answer

Half-life of Rn is only 3-8 days

Answer

Ar is used in electric bulbs

Question 47

47. Pyrex glass is a mixture of

Answer

Sodium silicate and lead silicate

Answer

Sodium silicate and calcium silicate

Answer

Sodium silicate and aluminum borosilicate

Answer

Sodium borosilicate and aluminum borosilicate

Question 48

48. 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 has oxidation state of +4

Answer

It forms R₂O₃

Answer

It forms RX₂

Question 49

49. Crystalline form of sulphur stale at room temperature is

Answer

Plastic sulphur

Answer

Prismatic sulphur

Answer

Rhombic sulphur

Answer

Monoclinic sulphur

Question 50

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

Question 51

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

Answer

Smaller ionic radii

Answer

Lower ionization energies

Answer

Greater hardness

Answer

Highest boiling points

Question 52

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

Answer

Nuclear masses

Answer

Atomic masses

Answer

Atomic numbers

Answer

Nuclear neutron-proton number rations

Question 53

53. The name of CaSO₄. ½ H₂O is

Answer

Epsom salt

Answer

Plaster of Paris

Question 54

54. Point out the correct equation which represents the strong action of heat on calcium nitrate.

Question 55

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

Question 56

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

Answer

Iron oxide

Question 57

57. Calico printing means

Answer

Cloth printing

Answer

Glass printing

Answer

Paper printing

Answer

Leather printing

Question 58

58. The halogen having highest electron affinity is

Question 59

59. Solution of sodium metal in liquid ammonia in strongly reducing due to the presence in the solution of the following

Answer

Sodium atoms

Answer

Solvated electrons

Answer

Sodium amide

Answer

Sodium hydride

Question 60

60. The type of hybridization of born in diborane is

Answer

Sp³- hybridization

Answer

Sp³d²-hybridisation

Answer

Sp-hybridisation

Answer

Sp²-hybridisation

Question 61

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

Question 62

62. Which of the following statements is incorrect?

Answer

Sodium is the most abundant metallic element in sea water

Answer

Melting and boiling points of alkali metals decrease down the group

Answer

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

Answer

Ionic character of alkali metal halides decreases down the group

Question 63

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

Question 64

64. The most powerful oxidizing agent among the halogens is

Answer 124

Different resistance under different circumstance

Answer 125

Decrease in resistance with increase in temperature

Answer 126

Increase in resistance with increase in temperature

Answer 127

Decease in resistance with intensity of light

Answer 128

Hydration energies of cations

Answer 129

Entropy of solution formation

Answer 130

Lattice energy solids

Answer 131

Inter – ionic attraction

Answer 132

Electrolytic methods

Answer 133

Reduction methods

Answer 134

Displacement methods

Answer 135

Double decomposition methods

Answer 136

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

Answer 137

Form salts which are predominantly covalent

Answer 138

Show increasing electro negativity from Li to Cs.

Answer 139

Form salt like hydrides

Answer 140

Gain 3 electrons

Answer 141

Lose 2 electrons

Answer 142

Gain 2 electrons

Answer 143

Lose 3 electrons

Answer 144

Marshall’s acid

Answer 145

Carlo’s acid

Answer 146

Sulphuric acid

Answer 147

None of these

Answer 148

Haemoglobin

Answer 149

Chlorophyll

Answer 150

Ca₃(PO₄)₂

Answer 151

Has the largest size

Answer 152

In the most readily available gas

Answer 153

Has the lowest ionization enthalpy

Answer 154

Has the highest heat of vaporization

Answer 155

None of these

Answer 156

Hypo phosphoric acid

Answer 157

Orthophosphoric acid

Answer 158

Phosphorous acid

Answer 159

Hypo phosphorous acid

Answer 160

Ca and CO₂

Answer 161

Colourless

Answer 162

Bluish green

Answer 163

Radish brown

Answer 164

All the three

Answer 165

Oxidizing agent

Answer 166

Reducing agent

Answer 167

Helium is much less soluble in blood than nitrogen

Answer 168

Nitrogen is much less soluble in blood than helium

Answer 169

Nitrogen is highly soluble in water

Answer 170

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

Answer 171

Absorbs moisture and remain solid

Answer 172

Increases the water of crystallization

Answer 173

Loses water of crystallization

Answer 174

Absorbs moisture and turn into liquid

Answer 175

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

Answer 176

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

Answer 177

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

Answer 178

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

Answer 179

Tetrahedral, acidic

Answer 180

Linear acidic

Answer 181

Linear, basic

Answer 182

Angular, disc

Answer 183

Oxidizing agents

Answer 184

Hydrolyzing agents

Answer 185

Reducing agents

Answer 186

Both oxidizing and reducing agents

Answer 187

F₂>Cl₂>Br₂>I2

Answer 188

I₂>Br₂>U₂>F₂

Answer 189

U₂>Br₂>I₂>F₂

Answer 190

I₂>F₂>Br₂>U₂

Answer 191

It is more electropositive than sodium

Answer 192

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

Answer 193

It is manufactured by electrolysis of aqueous magnesium chloride

Answer 194

It is a strong reducing agent

Answer 195

‘Li’ combine with nitrogen directly to form Lithium nitride

Answer 196

‘Li’ is not effected by air

Answer 197

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

Answer 198

‘Li’ has a great tendency to form hydrates

Answer 199

Isotopic number

Answer 200

Mass number

Answer 201

Atomic number

Answer 202

Atomic mass

Answer 203

Alkali metal atom has the smallest size in its period

Answer 204

Alkali metals have ns’ configuring in outermost shells

Answer 205

Alkali metals do not reacts with metals

Answer 206

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

Answer 207

d-orbitals

Answer 208

s-orbitals

Answer 209

p-orbitals

Answer 210

Oxyborates

Answer 211

NH₃ + H₂CO₃ → NH₄HCO₃

Answer 212

CO₃ + H₂O → H₂CO₃

Answer 213

NaCl + NH₄HCO₃ → NaHCO₃ + NH₄Cl

Answer 214

2NaOH + CO₂ → Na₂CO₃ + H₂O

Answer 215

Boiling point

Answer 216

Atomic radius

Answer 217

Ionization energy

Answer 218

F₂ > Cl₂ > Br₂ > I₂

Answer 219

Cl₂ > Br₂ > I₂ > F₂

Answer 220

Br₂ > Cl₂ > F₂ > I₂

Answer 221

I₂ > Br₂ > Cl₂ > F₂

Answer 222

In the atmosphere

Answer 223

As salts in ponds

Answer 224

Leads to the dissolution of beryllium metal

Answer 225

Precipitate Mg metal

Answer 226

Precipitate Mg

Answer 227

Have no effect

Answer 228

It is more reactive than other halogens

Answer 229

It restricts to oxidation state – 1 only

Answer 230

It has highest first ionization energy

Answer 231

It has highest electronegativity

Answer 232

It is covalent

Answer 233

It is highly hygroscopic

Answer 234

It is very volatile

Answer 235

HCl is formed in moist air

Answer 236

The lattice energy has no role to play in solubility

Answer 237

Both a and b

Answer 238

The hydration energy of Na₂SO₄ is more than its lattice energy

Answer 239

The lattice energy of BaSO₄ is more than its hydration energy

Answer 240

Non-metals

Answer 241

Radioactive

Answer 242

Polymorphic

Answer 243

Metalloids

Answer 244

Less dense then air and not flammable

Answer 245

Expensive but easy to store in cylinder

Answer 246

Expense, but a very uncreative gas

Answer 247

Lighter than air and cheap to produce

Answer 248

None of these of M²⁺ ions

Answer 249

High lattice energy of M²⁺ ions in the solid state

Answer 250

Diamagnetic nature

Answer 251

High energies of hydration of M²⁺ in solution

Answer 252

H₂B₄O₇

Answer 253

None of these

Answer 254

-2, +2, +6

Answer 255

+2, +4, +6

Answer 256

IV group radicals are precipitated as sulphides

Answer 257

Of the oxidation of H₂S gas by some acid radicals

Answer 258

III group radicals are precipitated as hydroxides

Answer 259

Sulphur is present in the mixture as impurity

Answer 260

Ferromagnetic

Answer 261

Antiferromagnetic

Answer 262

Paramagnetic

Answer 263

Diamagnetic

Answer 264

Alkali metals

Answer 265

Inert gases

Answer 266

Alkaline earth metals

Answer 267

Common salt

Answer 268

Carnallite

Answer 269

Simple distillation of water

Answer 270

Removing impurities of calcium and magnesium form water

Answer 271

Dissolving heavy salt in water

Answer 272

Prolonged electrolysis of water

Answer 273

Flint glass

Answer 274

Crooke’s glass

Answer 275

Soda glass

Answer 276

Borosilicate glass

Answer 277

Electron affinity

Answer 278

Ionization potential

Answer 279

Heat of dissociation

Answer 280

Heat of hydration

Answer 281

Mixture of neon and oxygen

Answer 282

Mixture of argon and oxygen

Answer 283

Mixture of helium and oxygen

Answer 284

Mixture of xenon and nitrogen

Answer 285

nS₂, nP₃

Answer 286

nS₂, nP₆

Answer 287

NS₂, nP₄

Answer 288

ns₂, nP₅

Answer 289

Additive electrons are accommodated in new electron level

Answer 290

Effective nuclear charge increases

Answer 291

Atomic mass increases

Answer 292

Atomic number increases

Answer 293

Fluorine does not form oxoacid

Answer 294

Bond energy of fluorine is less than that of chlorine

Answer 295

Electron affinity of chlorine is greater than that of fluorine

Answer 296

Fluorine cannot be prepared by electrolysis of fused metal fluorides

Answer 297

The stability of +2 oxidation state

Answer 298

The basic character of the oxides

Answer 299

The first ionization energy

Answer 300

Ionic character of the compound

Answer 301

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

Answer 302

Noble gases will all burn in pure oxygen

Answer 303

Noble gases are all dense gases

Answer 304

None of these

Answer 305

To increase Al production

Answer 306

To protect the anodes

Answer 307

To act as reducing agent

Answer 308

To make a conducting solution of bauxite

Answer 309

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

Answer 310

Their ionization potential is less than that of other elements

Answer 311

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

Answer 312

They contain only one electron in their outermost shell

Answer 313

Lattice energies if solids

Answer 314

Hydration energies of cations

Answer 315

Entropy of solution formation

Answer 316

Inter ionic attraction

Answer 317

Frank land and Lockyer

Answer 318

Rutherford

Answer 319

Lattice energy of CaO is much higher than that of Kl

Answer 320

Kl is soluble in benzene

Answer 321

CaO has high m.p.

Answer 322

Kl has high m.p.

Answer 323

Elemental Na is a strong oxidizing agent

Answer 324

Elemental Na is insoluble in NH₃

Answer 325

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

Answer 326

Elemental Na is easily oxidized

Answer 327

Thionyl chloride

Answer 328

Sulphur monochloride

Answer 329

Sulphur tetrachloride

Answer 330

Sulphuryl chloride

Answer 331

High atomic number

Answer 332

Hydration energy of ion

Answer 333

Energy dissociation

Answer 334

Electron affinity

Answer 335

CaC₂ + C

Answer 336

CaCN₂ + C

Answer 337

Ca(CN)₂ + C

Answer 338

Electrolysis of solution of calcium chloride in water

Answer 339

Electrolysis of molten anhydrous or fused calcium chloride

Answer 340

Roasting lime stone

Answer 341

Reduction of calcium chloride with carbon

Answer 342

Low electronegativity

Answer 343

Low charge density

Answer 344

Lower electro positivity

Answer 345

Ionization energy

Answer 346

Electron affinity

Answer 347

Hydration energy

Answer 348

Lattice energy

Answer 349

Monoatomic

Answer 350

All of these

Answer 351

Polyatomic

Answer 352

Chalcopyrites

Answer 353

Magnesium only

Answer 354

Magnesium and chlorine

Answer 355

Potassium only

Answer 356

Potassium and magnesium

Answer 357

F > Cl > Br

Answer 358

Br > Cl > F

Answer 359

F > Br > Cl

Answer 360

Cl > F > Br

Answer 361

Carbonates of Ca, Ba, Sr are soluble in water

Answer 362

Carbonates of Na, K, NH₄ are soluble in water

Answer 363

Basic carbonates of Mg and Cu are soluble in water

Answer 364

Li₂CO₃ is soluble in water

Answer 365

Both oxidized and reduced

Answer 366

Greater amount of nitrogen molecules derived from N¹⁵ isotope

Answer 367

Some nitrogen molecules analogous to O₂

Answer 368

Diatomic molecules

Answer 369

Various forms

Answer 370

Cannot be predicted

Answer 371

Monoatomic molecules

Answer 372

With alkali metals

Answer 373

None of these

Answer 374

With inert gases

Answer 375

With halogens

Answer 376

CaSO₄. 3H₂O

Answer 377

CaSO₄.2H₂O

Answer 378

CaSO₄. 1/2H₂O

Answer 379

Hypo phosphorous acid

Answer 380

Metaphosphoric acid

Answer 381

Orthophosphoric acid

Answer 382

Pyro phosphoric acid

Answer 383

H. bonding

Answer 384

None of these

Answer 385

Dipole-dipole forces

Answer 386

Strongest vanderwaal’s force

Answer 387

Coordinate

Answer 388

It decomposes the acid

Answer 389

It hydrolyses the acid

Answer 390

Acid forms hydrates with water

Answer 391

Acid decomposes water

Answer 392

Hypochlorous acid

Answer 393

Calcium oxide

Answer 394

Ozone is more reactive than dioxygen

Answer 395

Ozone is diamagnetic whereas dioxygen is paramagnetic

Answer 396

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

Answer 397

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

Answer 398

O₂ and CO₂

Answer 399

CO₂ and Ar

Answer 400

O₂ and He

Answer 401

O₂ and Ar

Answer 402

Noble gases

Answer 403

Heavy metals

Answer 404

Light metals

Answer 405

Nitrogen family

Answer 406

Alkali metals

Answer 407

Oxygen family

Answer 408

White phosphorus

Answer 409

Scarlet phosphorus

Answer 410

Violet phosphorus

Answer 411

Red phosphorus

Answer 412

Cannot be predicted

Answer 413

All the halogens react with noble gases to form their halides

Answer 414

All the halogens have electronic configuration ns2P5

Answer 415

All are non-metals

Answer 416

They have high electron affinity and ionization energy

Answer 417

Strong reducing agents

Answer 418

Weak reducing agents

Answer 419

Weak oxidizing agents

Answer 420

Strong oxidizing agents

Answer 421

Zero electron affinity

Answer 422

Large size

Answer 423

Higher I-P

Answer 424

Electron deficiency

Answer 425

Ionization property

Answer 426

Acidic nature

Answer 427

Covalent nature

Answer 428

Lead nitrate

Answer 429

Potassium chlorate

Answer 430

Mercuric oxide

Answer 431

Manganese dioxide

Answer 432

Free electrons

Answer 433

Atoms of sodium and chlorine

Answer 434

Free molecules

Answer 435

Developing picture

Answer 436

The colour of picture

Answer 437

The fixation of picture

Answer 438

Picture printed

Answer 439

Tetrahedral

Answer 440

Calcried gypsum

Answer 441

A marble states

Answer 442

Sea shells

Answer 443

It decreases gradually down the group

Answer 444

It increases gradually down the group

Answer 445

None of these

Answer 446

Noble gases have o heat of vapourization

Answer 447

Diclacium silicate

Answer 448

Tri-calcium silicate

Answer 449

Tetra calcium aluminoferrite

Answer 450

Tri-calcium aluminate

Answer 451

Mark the ship lighter

Answer 452

Prevent puncturing by under sea rock

Answer 453

To prevent the action of water and salt

Answer 454

Keep away the sharks

Answer 455

HF molecules form intermolecular H-bonds

Answer 456

HF is the weakest acid

Answer 457

Fluorine is highly reactive

Answer 458

Fluorine atom is smaller in size

Answer 459

Atomic radius

Answer 460

Electro negativity

Answer 461

Ionization energy

Answer 462

Frank land

Answer 463

J.J Thomson

Answer 464

High atomic number

Answer 465

Energy dissociation

Answer 466

Hydration energy

Answer 467

Electron affinity

Answer 468

Solvay process

Answer 469

Castner cell

Answer 470

Down’s cell

Answer 471

Castner Kellner cell

Answer 472

Carlo’s acid

Answer 473

Dithionic acid

Answer 474

Sulphurous acid

Answer 475

Pyrosulphuric acid

Answer 476

O > C > B > N

Answer 477

O > C > N > B

Answer 478

B > N > C > O

Answer 479

O > B > C > N

Answer 480

It cannot act as a bleaching agent

Answer 481

It oxidizes potassium iodide

Answer 482

It oxidizes lead sulphides

Answer 483

It oxidizes mercury

Answer 484

High ionization energy

Answer 485

Low electronegativity

Answer 486

Their ions are isoelectronic with noble gases

Answer 487

Low melting point

Answer 488

High ∆H lattice

Answer 489

Small ionic size of Li⁺

Answer 490

Low ∆H lattice

Answer 491

High covalent nature

Answer 492

Chromyl chloride

Answer 493

Chromic chloride

Answer 494

Chromous chloride

Answer 495

Atomic radius

Answer 496

Boiling point

Answer 497

Ionization energy

Answer 498

Na > Mg > Al > Si

Answer 499

Si > Mg > Al > Na

Answer 500

Mg > Na > Al > Si

Answer 501

Al > Mg > Na > Si

Answer 502

None of these

Answer 503

Al has high ionization energy

Answer 504

Higher co-ordination can be achieved by Al

Answer 505

Al belongs to third group

Answer 506

It cannot form a trimer

Answer 507

Hydrogenation

Answer 508

Chlorination

Answer 509

Weak van der Waals forces between atoms

Answer 510

High polarisability

Answer 511

Gaseous nature

Answer 512

Sodium ion

Answer 513

Nitride ion

Answer 514

Chloride ion

Answer 515

Fluoride ion

Answer 516

Low electron affinity

Answer 517

Low ionization potential

Answer 518

Large size

Answer 519

High ionization potential

Answer 520

Solid solution

Answer 521

Liquid crystal

Answer 522

Cage compound

Answer 523

Perchloric acid (CHIO₄) over hot silver oxide

Answer 524

Hydrogen chloride over phosphorus pentoxide

Answer 525

Chlorine gas over hot HgO

Answer 526

Chlorine and oxygen over hot silver chlorate

Answer 527

Representative elements

Answer 528

Transition elements

Answer 529

Inner transition elements

Answer 530

Sulphur dioxide

Answer 531

Carbon dioxide

Answer 532

Weak acid and strong base

Answer 533

Strong acid and strong base

Answer 534

Strong acid and weak base

Answer 535

Weak acid and weak base

Answer 536

Variation is not regular

Answer 537

Increases down the group

Answer 538

Decreases down the group

Answer 539

Remains unchanged

Answer 540

As a drying agent

Answer 541

As a plaster for walls

Answer 542

In dentistry and surgery

Answer 543

In metallurgical process

Answer 544

Borazole is electron deficient compound

Answer 545

Borazole is polar compound

Answer 546

Borazole is nonpolar compound

Answer 547

Of localized electrons in it

Answer 548

Oxidizing as well as reducing agents

Answer 549

Drying agents

Answer 550

Oxidizing agents

Answer 551

Reducing agents

Answer 552

Iodine solution

Answer 553

Triatomic molecules

Answer 554

Diatomic molecules

Answer 555

Single free atoms

Answer 556

Atoms linked by weak bonds

Answer 557

Less soluble in water

Answer 558

Insoluble in water

Answer 559

Highly soluble in water

Answer 560

Variable trend

Answer 561

It is used furniture polish

Answer 562

It is used in the formation white cement

Answer 563

It is as filter for soap

Answer 564

It is used as fire proof in textile

Answer 565

Sodium reduces CO₂ to carbon

Answer 566

Magnallium is one alloy of Mg and zinc

Answer 567

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

Answer 568

Magnesium reacts with cold water and liberates hydrogen

Answer 569

Tetrabasic

Answer 570

Calcium carbonate

Answer 571

Sodium bicarbonate

Answer 572

Calcium oxide

Answer 573

Sodium carbonate

Answer 574

There is no change in the nuclear charge

Answer 575

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

Answer 576

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

Answer 577

None of these

Answer 578

Sodium hydride

Answer 579

Sodium amide

Answer 580

Sodium atoms

Answer 581

Solvated electrons

Answer 582

First ionization energy

Answer 583

Ionic radius

Answer 584

Melting point

Answer 585

Electro negativity

Answer 586

In form of foil for wrapping

Answer 587

For preparing artificial

Answer 588

As an abrasive in the form of abundum

Answer 589

As an oxidizer in metallurgy

Answer 590

Dinitrogen tetraoxide

Answer 591

Nitrous oxide

Answer 592

Nitrogen dioxide

Answer 593

Nitric oxide

Answer 594

Reaction with CO₂

Answer 595

Reaction with NaOH

Answer 596

Presence of NH₃

Answer 597

Reaction with brine solution

Answer 598

A carbonate

Answer 599

A sulphate

Answer 600

It is used in soda water

Answer 601

It corrodes the organic tissues

Answer 602

It reacts with chlorine gas

Answer 603

It reacts with fats to form soap

Answer 604

Non-metallic nature of fluorine

Answer 605

More electron repulsion in fluorine

Answer 606

Small size of fluorine

Answer 607

More electro negativity of fluorine

Answer 608

Whole group consist of non-metals

Answer 609

There is a regular gradation of properties from top to bottom

Answer 610

Abrupt change of properties

Answer 611

Marked change of properties

Answer 612

None of these

Answer 613

Both are found together in nature

Answer 614

Both have similar electronic configurations

Answer 615

The ratio of their charge to size is nearly the same

Answer 616

Both have nearly the same size

Answer 617

Ionic and gas

Answer 618

Ionic and liquid

Answer 619

Covalent and liquid

Answer 620

None of these

Answer 621

Tetrahedral

Answer 622

Distorted octahedral

Answer 623

None of these

Answer 624

The reaction does not go to completion

Answer 625

The reaction is highly exothermic

Answer 626

The reaction is quite slow

Answer 627

SO₃ is insoluble in H₂O

Answer 628

Gallium and Germanium

Answer 629

Proton and silicon

Answer 630

Iron and sulphur

Answer 631

Aluminum and silicon

Answer 632

Strongly bond valence electrons

Answer 633

Metallic properties

Answer 634

Small ionic size

Answer 635

Large atomic size

Answer 636

Calcium sulphates

Answer 637

Magnesium ammonium phosphate

Answer 638

Ferrous ammonium sulphate

Answer 639

Magnesium sulphates

Answer 640

More than O and Se

Answer 641

More than O but less than Se

Answer 642

Less than O but more than SE

Answer 643

Equal to O and Se

Answer 644

Sodium sulphides

Answer 645

Sodium thiosulphate

Answer 646

Sodiums sulphates

Answer 647

Sodium persulphate

Answer 648

Na₂Al(OH)₄

Answer 649

Al₂(OH)₄

Answer 650

Na₃AlO₃

Answer 651

Sodium amide

Answer 652

Sodium azide

Answer 653

Sodium hydride

Answer 654

Sodium nitride

Total Questions:	330
Time Allowed:	80 Minutes
Total Marks:	330
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	Chemistry Test ECAT Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Chemistry Interview Question Answer

Code	List I	Code	List II
a	XeF₄	1	Distorted octahedral
b	XeF₆	2	Tetrahedral
c	XeO₃	3	Square planar
d	XeO₄	4	Trigonal pyramidal

Chemistry The Halogens and Noble Gases Online Mcqs Test

Important Chemistry The Halogens and Noble Gases Question and Answer

Chemistry The Halogens and Noble Gases Practice Test Online With Explanation

Chemistry

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

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Malik Tahir

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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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