Chemistry Liquids and Solids Online Mcqs Test

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Question 1

1. The phenomenon in which a compound exists in two or more crystalline forms is called

Answer

Isomorphism

Answer

Anisotropy

Answer

Polymorphism

Question 2

2. What is the relative rate of effusion of CO and CO₂?

Answer

CO is 1.25 times faster than CO₂

Answer

CO is 3.75 times faster than CO₂

Answer

Both diffused at the same time

Answer

CO₂ is 1.25 times faster than CO

Question 3

3. A solution of 10 mL of M/10 FeSO₄ was titrated with KMnO₄ solution in acidic medium, the amount of KMnO₄ used will be

Answer

10 mL of 0.5 M

Answer

5 mL of 0.1 M

Answer

10 mL of 0.02 M

Answer

10 mL of 0.1 M

Question 4

4. The example of hexagonal system is

Question 5

5. Crystalline solids can be identified easily by their

Answer

All of these

Answer

Definite geometry

Answer

Transition temperature

Question 6

6. The reaction 4NH₃ + 3O₂ → 2N₂ + 6H₂O indicates that

Answer

For the complete reaction of 2 mole of NH₃ 20g of O₂ are required

Answer

One mole of NH₃ will produce 6 moles of N₂

Answer

For the complete reaction of 2 moles of NH₃ 40g of O₂ are required

Answer

One mole of NH₃ will produce ½ mole of N₂

Question 7

7. Imagine a man is sitting in a room. The room is closed from all sides, no entry, no exit of any gas. If the room expands suddenly then

Answer

He will feel cool

Answer

His blood pressure will increase

Answer

There will be no change in the internal environment of the room

Answer

He will feel warmth

Question 8

8. Correct order of intermolecular forces

Answer

Gas < liquid < solid

Answer

Gas = liquid = solid

Answer

Gas < liquid < solid

Answer

Liquid < gas < solid

Question 9

9. The body centered cubic arrangement is found in the crystal of

Question 10

10. Graphite is a good conductor of electricity due to the presence of ________.

Answer

Free valence electrons

Answer

Ione pair of electrons

Question 11

11. An organic compound contains 49.3% carbon, 6.84% hydrogen and its vapour density is 73. Molecular formula of compound is

Answer

C₆H₁₀O₄

Answer

C₄H₁₀O₂

Answer

C₃H₅O₂

Answer

C₃H₁₀O₂

Question 12

12. A solid may be made up of

Answer

A, B and C

Question 13

13. Mean distance between atoms in the range of

Question 14

14. a ≠ b ≠ c, ∞ ≠ β ≠ r ≠ 90 is representation of

Answer

Monoclimic

Question 15

15. Particles that most effects material properties

Answer

Valence electrons

Question 16

16. For c coordination number of four, anion sits at the center of ________ where corners are occupied by cations

Answer

Tetrahedron

Answer

Octahedron

Question 17

17. Which of the following statements about amorphous solids is incorrect?

Answer

They melt over a range of temperature

Answer

They are anisotropic

Answer

There are rigid and in-compressible

Answer

There is no orderly arrangement of particles

Question 18

18. Repeatable entity of a crystal structure is known as

Answer

Miller indices

Question 19

19. Which of the following are more temperature sensitive?

Answer

Ionic crystals

Answer

Liquid crystals

Answer

None of these

Answer

Solid crystals

Question 20

20. Coordination number of Zn and ZnS (Zinc blends) is

Answer

None of these

Question 21

21. The total number of lattice arrangements in different crystal system is

Question 22

22. Which one is not usually used for the crystallization?

Answer

Chloroform

Answer

Acetic acid

Answer

Sulphuric acid

Question 23

23. Which of the following contain maximum number of atoms?

Answer

20 moles of S8

Answer

5.0 moles of SO₂

Answer

44.8 dm3 CO₂ at S.T.P

Answer

6 moles of S

Question 24

24. 3.2 g of oxygen (At. Wt. = 16) and 0.2 g of hydrogen (At. Wt. = 1) are placed in a 1.12 L flask at 0°C. The total pressure of the gas mixture will be

Question 25

25. Simple molecules or giant macromolecules are examples of

Answer

Diatic bond

Answer

Metallic bonds

Answer

Ionic compounds

Answer

Covalent bonds

Question 26

26. Wt. of 112 ml of oxygen at STP on liquefaction would be

Question 27

27. In crystal structure of sodium chloride, the arrangement of Cl ions is

Answer

Both fcc and bcc

Answer

None of these

Question 28

28. Two moles of an ideal gas at 1 atm are compressed to 2 atm at 273 K. The enthalpy change for the process is

Answer

3 liter atm

Answer

1 liter atm

Answer

2 liter atm

Question 29

29. Which solids are called true solids?

Answer

Crystalline

Question 30

30. Poor conductors of electricity is a characteristic of

Answer

Ionic compounds

Answer

Diatic bonds

Answer

Covalent compounds

Answer

Metallic compounds

Question 31

31. The vapour density of a gas is 11.2. The volume occupied by 11.2 g of this gas at N.T.P. is

Answer

2.24 liters

Answer

22.4 liters

Answer

11.2 liters

Question 32

32. An alkaloid contains 17.28% of nitrogen and its molecular mass is 162. The number of nitrogen atoms present in one molecule of alkaloid is:

Question 33

33. Super conductors are derived from compounds of

Answer

Lanthanides

Answer

Transition elements

Answer

p-block elements

Question 34

34. Amorphous substance posses

Answer

No definite heat of fusion

Answer

No definite geometry

Answer

No sharp melting points

Answer

All of these

Question 35

35. Which of the following is isotropic

Question 36

36. In case of elements the polymorphism is called

Answer

Isomorphism

Answer

Isotopic form

Answer

Crystalline forms

Question 37

37. Pressure remaining constant at which temperature the volume of a gas will become twice o what it is at 0°C

Question 38

38. Solvent extraction is mostly applied to separate

Answer

Both A and B

Answer

Inorganic compounds

Answer

Organic compounds

Answer

None of these

Question 39

39. A malleable solid is one which can be

Answer

All of these

Answer

Melted easily

Answer

Converted into sheets

Answer

Converted into wires

Question 40

40. Gooch crucible is used for the filtration of precipitates having

Answer

Low temperature

Answer

High concentration

Answer

High ignition temperature

Answer

High solubility

Question 41

41. Crystals can be classified into

Answer

7 crystal systems

Answer

4 crystal systems

Answer

3 crystal systems

Answer

14 crystal systems

Question 42

42. Gases deviate from ideal behavior at high pressure. Which of the following is correct for non – ideality?

Answer

A high pressure, the volume of the gas becomes insignificant

Answer

At high pressure, the collisions between the gas molecules are increased manifold

Answer

At high pressure, the gas molecules move in one direction only

Answer

At high pressure, the intermolecular attraction becomes significant

Question 43

43. The total number of protons in 10 g of calcium carbonate in (N₀ = 6.023 x 10²³)

Answer

3.0115 x 10 ²⁴

Answer

4.0956 x 10 ²⁴

Answer

2.0478 x 10 ²⁴

Answer

1.5057 x 10 ²⁴

Question 44

44. The crystal structure having face centered cubic arrangement is

Question 45

45. Hydrogen diffuses six times faster than gas A. The molar mass gas of gas A is

Question 46

46. To prepare the medium sized crystal the hot filtrate is cooled

Answer

Moderately

Question 47

47. What will be the external pressure at which water may boil at 120°C?

Answer

1489 mm of Hg

Answer

700 mm of Hg

Answer

100 mm of Hg

Answer

790 mm of Hg

Question 48

48. Which one is not postulated in the kinetic molecular theory among the followings?

Answer

Molecules of all the gases have same size and same mass

Answer

The volume of the molecules is negligible as compared to volume occupied by the gas

Answer

Molecules are in chaotic motion

Answer

All molecular collisions are elastic

Question 49

49. Amorphous substances possess

Answer

Definite heat of fusion

Answer

Sharp melting points

Answer

No definite heat of fusion

Answer

Sharp B.P.

Question 50

50. The ratio of most probable velocity to that of average velocity is

Question 51

51. A semiconductor of Ge can be made p-type by adding

Answer

Trivalent impurity

Answer

Tetravalent

Answer

Pentavalent impurity

Answer

Divalent impurity

Question 52

52. Which of the following has least mass?

Answer

2 gram atom of nitrogen

Answer

3 x 10²³ atoms of C

Answer

1 mole of S

Answer

7.0 g of Ag.

Question 53

53. The kinetic energy of 4 moles of nitrogen gas at 127°C is? cals. (R = 2 cal mol¯¹ K¯¹)

Question 54

54. 50dm³ of CO is burnt completely according to reaction 2CO + O₂ – 2CO₂ Choose the correct statement

Answer

Volume of O₂ required is 25 dm³

Answer

Volume of O₂ required is 50 dm³

Answer

Volume of CO₂ formed is 25 dm³

Answer

Volume of CO₂ formed is 60 dm³

Question 55

55. The ratio of close packed atoms to tetrahedral holes in cubic close packing is

Question 56

56. Which is distilled first?

Answer

Liquid H₂

Answer

Liquid N₂

Answer

Liquid CO₂

Answer

Liquid O₂

Question 57

57. The deviation of a gas from ideal behavior is maximum at

Answer

0°C and 2.0 atm

Answer

-10°C and 5.0 atm

Answer

100°C and 2.0 atm

Answer

-10°C and 2.0 atm

Question 58

58. Which of the following does not represent a type of crystal system?

Answer

Monoclinic

Answer

Rhombohedral

Answer

Isotropical

Question 59

59. Which one of the following pair of atoms is most likely to from an ionic bond?

Question 60

60. Number of atoms in 558.5 g of Fe (At. Mass of Fe = 55.85 g mole¯¹) is

Answer

6.022 x 10²²

Answer

Half that in 8 g of He

Answer

Twice that in 60 g carbon

Answer

558.5 x 6.022 x 10²³

Question 61

61. The molar volume of CO₂ is maximum at

Answer

S.T.P (0°C and 1 atm)

Answer

127°C and 1 atm

Answer

0°C and 2 atm

Answer

273°C and 2 atm

Question 62

62. Which of the following crystal does not possess the cubic closed packed arrangement?

Question 63

63. Which of the following statement is correct if the intermolecular forces in liquids A, B and C are in the order A < B < C?

Answer

A and B evaporates at the same rate

Answer

B evaporates less readily than C

Answer

A evaporates more readily than C

Answer

B evaporates more readily than A

Question 64

64. In which of the following compounds H – bonding is not present?

Answer 154

To avoid premature crystallization of the solute

Answer 155

Increasing the rate of filtration

Answer 156

To dissolve large amount of substance at its boiling point

Answer 157

Filtering the hot saturated solution

Answer 158

Yb Ba₂Cu₂O₈

Answer 159

Hg Be₂Ca₂Cu₂O₈

Answer 160

Y B₂Cu₃O₇

Answer 161

Y Ba₂Cu₃O₇

Answer 162

1.4 x 10¯²¹ g

Answer 163

1.3 x 10¯²⁰ g

Answer 164

3.72 x 10¯²³ g

Answer 165

5.01 x 10¯²¹ g

Answer 166

Confined gas exerts uniform pressure on the walls of its container in all directions

Answer 167

Mass of gas cannot be determined by weighing a container in which it is enclosed

Answer 168

Gases do not have a definite shape and volume

Answer 169

Volume of the gas is equal to volume of container confining the gas

Answer 170

Same physical and difference chemical properties

Answer 171

Same physical and chemical properties

Answer 172

Different physical and chemical properties

Answer 173

Different physical and same chemical properties

Answer 174

Cubic lattice

Answer 175

Orthogonal lattice

Answer 176

Ortho rhombic lattice

Answer 177

The coordination number of carbon atoms is 4

Answer 178

The carbon atoms use only three of their four outer electrons for covalent bonding

Answer 179

The carbon atoms are arranged layers

Answer 180

The layers in graphite are attracted to each other by weak forces

Answer 181

Randomly moving

Answer 182

Having wide spaces

Answer 183

Causing pressure

Answer 184

Orderly arranged

Answer 185

Add water to the mixture and filter

Answer 186

Place the mixture in a separating funnel

Answer 187

Heat the mixture and allow it to cool

Answer 188

Add dilute acid to the mixture and filter

Answer 189

Single extraction and large portion of solvent

Answer 190

Repeated extraction and small portion of solvent

Answer 191

Repeated extraction and large portion of solvent

Answer 192

Single extraction and small portion of solvent

Answer 193

2nλ = d sin θ

Answer 194

nλ = 2 θ sin θ

Answer 195

nλ = 2 d sin θ

Answer 196

nλ = 1/2d sin θ

Answer 197

8.31 JK¯¹ mol¯¹

Answer 198

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 199

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 200

8.31 L atm K¯¹ mol¯¹

Answer 201

Elastic collisions of gas molecules

Answer 202

Non-polar nature of gases

Answer 203

Pressure of dust particles in air

Answer 204

Different molar mass

Answer 205

Different physical and chemical properties

Answer 206

Same physical and different chemical properties

Answer 207

Same physical and chemical properties

Answer 208

Different physical and same chemical properties

Answer 209

Change by 33%

Answer 210

Is unchanged

Answer 211

Is changed by about 26%

Answer 212

Allotropes

Answer 213

Isoelectronic

Answer 214

Tetra chloromethane

Answer 215

All types of atoms and molecules

Answer 216

Polar compounds

Answer 217

NH₃ and H⁺

Answer 218

H₂O and H⁺

Answer 219

CH₄ and AlCl₃

Answer 220

NH₃ and BF₃

Answer 221

Chromatography

Answer 222

Solvent extraction

Answer 223

Crystallization

Answer 224

159 g/Cm²

Answer 225

159 mm Hg.

Answer 226

Have sharp melting point

Answer 227

Can possess small regions of orderly arrangement of atoms

Answer 228

Undergo clean cleave when cut with knife

Answer 229

Have perfect arrangement of atoms

Answer 230

0.5 atm, and 500 K

Answer 231

15 tm, and 500 K

Answer 232

1 atm, and 273 K

Answer 233

15 atm, and 200 K

Answer 234

Both b and c

Answer 235

Low temperature

Answer 236

High temperature

Answer 237

High pressure

Answer 238

Decrease twice

Answer 239

Increase two fold

Answer 240

Be a function of the molecular mass of substance

Answer 241

Remains unchanged

Answer 242

NaCl type structure

Answer 243

AB₂ type ionic compound

Answer 244

CsCl type structure

Answer 245

ZnS type structure

Answer 246

Ascending paper chromatography

Answer 247

Descending paper chromatography

Answer 248

Liquid gas chromatography

Answer 249

Liquid solid chromatography

Answer 250

4 x 6.02 x 10²³

Answer 251

2 x 6.02 x 10²³

Answer 252

3/2 x 6.02 x 10²³

Answer 253

6.02 x 10²³

Answer 254

Much larger than the molar volumes of liquids and solids

Answer 255

About the same as the molar volumes of liquids

Answer 256

Little bit greater than the molar volumes of liquid

Answer 257

Little bit less than the molar volumes of solids

Answer 258

101.325 Pa

Answer 259

8.5 Pounds

Answer 260

Colour of the gas is greenish yellow

Answer 261

A gas is liberated

Answer 262

The gas is chlorine

Answer 263

Oxide of the gas is strongly acidic

Answer 264

Increase of intermolecular interactions

Answer 265

Increase of K.E of molecules

Answer 266

Decrease of surface tension

Answer 267

Increase in potential energy of molecules

Answer 268

22.4 liter

Answer 269

2.24 liter

Answer 270

Low melting points

Answer 271

Good conductivity in solid state

Answer 272

Solubility in polar solvents

Answer 273

High vapour pressures

Answer 274

Increase in temperature increases the average kinetic energy of molecules which overcome the attractive force between them

Answer 275

Decreased volume of the solution

Answer 276

Increased attraction between the molecules

Answer 277

Decreased covalent and hydrogen bond forces

Answer 278

Gets a single positive charge

Answer 279

Gets a double positive charge

Answer 280

Gets a double negative charge

Answer 281

Gets a single negative charge

Answer 282

Transition temperature

Answer 283

Definite geometry

Answer 284

Sharp melting point

Answer 285

Polymorphism

Answer 286

Isomorphism

Answer 287

Anisotropy

Answer 288

Charles’ law

Answer 289

Avogadro’s law

Answer 290

Boyle’s law

Answer 291

Dalton’s law

Answer 292

Normal filter paper

Answer 293

Both A & B

Answer 294

Fluted filter paper

Answer 295

Relative abundance

Answer 296

Number of isotopes

Answer 297

Vaporization

Answer 298

Condensation

Answer 299

Sublimation

Answer 300

Filtration

Answer 301

CaSO₄.2H₂O

Answer 302

Super-cooled liquid

Answer 303

Micro-crystalline solid

Answer 304

None of these

Answer 305

Molecular solids

Answer 306

Pseudo solids

Answer 307

Covalent solids

Answer 308

Ionic solids

Answer 309

Boyle’s law

Answer 310

Graham’s law

Answer 311

Charles’ law

Answer 312

Dalton’s law

Answer 313

Isomorphism

Answer 314

Polymorphism

Answer 315

None of these

Answer 316

None of these

Answer 317

The filtrate is quick

Answer 318

This gives bigger size crystals

Answer 319

Filtrate runs down without crystals

Answer 320

This gives medium size crystals

Answer 321

Tetrahedral manner

Answer 322

Hexagonal manner

Answer 323

Square planner manner

Answer 324

Altahydral manner

Answer 325

Non covalent bond force

Answer 326

Electrical attraction

Answer 327

Electrostatic force

Answer 328

Covalent bond

Answer 329

Chemical properties

Answer 330

Arrangement of electrons in orbitals

Answer 331

The extent to which they may be affected in electron magnetic field

Answer 332

Properties which depend upon mass

Answer 333

A and C have same reading and are less then B

Answer 334

A metal that crystallizes in BCC structure has coordination number equal to 12

Answer 335

The coordination number of each type of ion in CsCl crystal is 8.

Answer 336

None of these

Answer 337

A unit cell of an ionic crystal shares some of its ions with other unit cells.

Answer 338

Allotropic crystal

Answer 339

Liquid Crystals

Answer 340

Isomorphous crystals

Answer 341

Isomeric crystals

Answer 342

Na(g) → N²⁺ (g) + e¯

Answer 343

Na(s) → N²⁺ (g) + 2e¯

Answer 344

Na(g) → N²⁺ (g) + +¯

Answer 345

Na(s) → N²⁺ (g) + e¯

Answer 346

Tetragonal

Answer 347

Monoclinic

Total Questions:	150
Time Allowed:	60 Minutes
Total Marks:	150
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