Chemistry Liquids and Solids Online Mcqs Test

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Question 1

1. In the equation PV = nRT which one cannot be numerically equal to R

Answer

8.31 JK¯¹ mol¯¹

Answer

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer

8.31 L atm K¯¹ mol¯¹

Answer

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Question 2

2. The molecules of air don’t settle down. The is due to

Answer

Pressure of dust particles in air

Answer

Different molar mass

Answer

Elastic collisions of gas molecules

Answer

Non-polar nature of gases

Question 3

3. Solvent extraction is mostly applied to separate

Answer

Inorganic compounds

Answer

None of these

Answer

Both A and B

Answer

Organic compounds

Question 4

4. If rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B?

Question 5

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

Answer

There are rigid and in-compressible

Answer

They are anisotropic

Answer

There is no orderly arrangement of particles

Answer

They melt over a range of temperature

Question 6

6. Which forms metallic crystals?

Question 7

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

Question 8

8. Amorphous substances possess

Answer

Definite heat of fusion

Answer

Sharp B.P.

Answer

No definite heat of fusion

Answer

Sharp melting points

Question 9

9. The relative atomic mass of chlorine is 35.5. What is the m ass of 2 moles of chlorine gas?

Question 10

10. Correct order of intermolecular forces

Answer

Liquid < gas < solid

Answer

Gas < liquid < solid

Answer

Gas < liquid < solid

Answer

Gas = liquid = solid

Question 11

11. The existence of a substance in more than one solid modification is known as

Answer

None of these

Answer

Polymorphism

Answer

Isomorphism

Question 12

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

Answer

High ignition temperature

Answer

Low temperature

Answer

High solubility

Answer

High concentration

Question 13

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

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

Answer

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

Question 14

14. In which process solid phase and vapour phase are directly involved?

Answer

Sublimation

Answer

Vaporization

Answer

Filtration

Answer

Condensation

Question 15

15. The M.P of ice at Kelvin scale is 237K° and B.P of water is 373 K. This is a known fact that the molar volumes of different gases at S.T.P are

Answer

Much larger than the molar volumes of liquids and solids

Answer

About the same as the molar volumes of liquids

Answer

Little bit less than the molar volumes of solids

Answer

Little bit greater than the molar volumes of liquid

Question 16

16. Which of the following substance is amorphous in nature?

Question 17

17. In case of elements the polymorphism is called

Answer

Crystalline forms

Answer

Isotopic form

Answer

Isomorphism

Question 18

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

Answer

Both fcc and bcc

Answer

None of these

Question 19

19. 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

Molecules are in chaotic motion

Answer

All molecular collisions are elastic

Answer

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

Question 20

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

Answer

Anisotropy

Answer

Polymorphism

Answer

Isomorphism

Question 21

21. How many Cl¯ ions are there around Na⁺ ion in NaCl crystal?

Question 22

22. Consider the physical properties of the gases. Which of the following statements about particles of gasses is incorrect? The particles are

Answer

Randomly moving

Answer

Orderly arranged

Answer

Having wide spaces

Answer

Causing pressure

Question 23

23. When the temperature is raised, the viscosity of the liquid decreases. This is because of

Answer

Increased attraction between the molecules

Answer

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

Answer

Decreased volume of the solution

Answer

Decreased covalent and hydrogen bond forces

Question 24

24. Isomorphic substances have

Answer

Same physical and chemical properties

Answer

Different physical and chemical properties

Answer

Same physical and different chemical properties

Answer

Different physical and same chemical properties

Question 25

25. Which of the following metal oxides is anti-ferromagnetic in nature?

Question 26

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

Answer

-10°C and 2.0 atm

Answer

100°C and 2.0 atm

Answer

-10°C and 5.0 atm

Answer

0°C and 2.0 atm

Question 27

27. What is the concentration of nitrate ions, if equal volumes of 0.1 M AgNO₃ and 0.1 M NaCl are mixed together?

Question 28

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

Answer

Ione pair of electrons

Answer

Free valence electrons

Question 29

29. In which one of the following does the central atom not possess an ‘octet’ in its outer shell?

Question 30

30. Amorphous solids

Answer

Can possess small regions of orderly arrangement of atoms

Answer

Have perfect arrangement of atoms

Answer

Have sharp melting point

Answer

Undergo clean cleave when cut with knife

Question 31

31. Which of the following equations represents the 2nd ionization energy of Na?

Answer

Na(s) → N²⁺ (g) + 2e¯

Answer

Na(g) → N²⁺ (g) + e¯

Answer

Na(s) → N²⁺ (g) + e¯

Answer

Na(g) → N²⁺ (g) + +¯

Question 32

32. Isomorphic substance have

Answer

Different physical and chemical properties

Answer

Same physical and difference chemical properties

Answer

Different physical and same chemical properties

Answer

Same physical and chemical properties

Question 33

33. ‘x’ grams of calcium carbonate was completely burnt in air. The weight of the solid residue formed is 28 g. What is the value of ‘x’ in grams?

Question 34

34. The allotropic forms of an element are called

Answer

Allotropes

Answer

Isoelectronic

Question 35

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

Answer

Tetrahedron

Answer

Octahedron

Question 36

36. 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

B evaporates less readily than C

Answer

B evaporates more readily than A

Answer

A evaporates more readily than C

Answer

A and B evaporates at the same rate

Question 37

37. 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 0.1 M

Answer

10 mL of 0.5 M

Answer

10 mL of 0.02 M

Answer

5 mL of 0.1 M

Question 38

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

Answer

Twice that in 60 g carbon

Answer

558.5 x 6.022 x 10²³

Answer

Half that in 8 g of He

Answer

6.022 x 10²²

Question 39

39. Van der Waal’s forces exist in

Answer

All types of atoms and molecules

Answer

Polar compounds

Question 40

40. Which is trigonal crystal?

Answer

CaSO₄.2H₂O

Question 41

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

Answer

None of these

Question 42

42. The molar volume of CO₂ is maximum at

Answer

0°C and 2 atm

Answer

273°C and 2 atm

Answer

127°C and 1 atm

Answer

S.T.P (0°C and 1 atm)

Question 43

43. The major binding force of diamond, silicon and quartz is

Answer

Electrostatic force

Answer

Non covalent bond force

Answer

Covalent bond

Answer

Electrical attraction

Question 44

44. Which of the following is a pseudo solid?

Question 45

45. What is the pressure of 2 mole of NH₃ at 27°C when its volume is 5 lit in Van der Waals equation? (a = 0.17, b = 0.03711)

Question 46

46. Isotopes differ in

Answer

Chemical properties

Answer

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

Answer

Arrangement of electrons in orbitals

Answer

Properties which depend upon mass

Question 47

47. Which of the following statements is (are correct)?

Answer

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

Answer

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

Answer

None of these

Answer

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

Question 48

48. When the following reaction equations is properly balanced, the number of moles of O₂ will be
C₃H₈ + O₂ → CO₂ + H₂O

Question 49

49. Distribution law is employed in which one of the following

Answer

Crystallization

Answer

Chromatography

Answer

Solvent extraction

Question 50

50. The example of hexagonal system is

Question 51

51. The pure crystalline substance on being heated gradually first forms a turbid liquid at constant temperature and still at higher temperature turbidity completely disappears. The behavior is a characteristic of substance forming

Answer

Isomeric crystals

Answer

Allotropic crystal

Answer

Liquid Crystals

Answer

Isomorphous crystals

Question 52

52. 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 53

53. The mass of one mole of electron is

Question 54

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

Question 55

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

Answer

Monoclimic

Question 56

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

Answer

20 moles of S8

Answer

44.8 dm3 CO₂ at S.T.P

Answer

5.0 moles of SO₂

Answer

6 moles of S

Question 57

57. Which of the following techniques is a type paper chromatography in which solvent is in a pool at the bottom of the vessel?

Answer

Liquid gas chromatography

Answer

Ascending paper chromatography

Answer

Liquid solid chromatography

Answer

Descending paper chromatography

Question 58

58. Crystalline solids can be identified easily by their

Answer

All of these

Answer

Definite geometry

Answer

Transition temperature

Question 59

59. The following statements contained in a student’s laboratory report is a conclusion

Answer

A gas is liberated

Answer

Oxide of the gas is strongly acidic

Answer

Colour of the gas is greenish yellow

Answer

The gas is chlorine

Question 60

60. Crystalline solids can be identified easily from their

Answer

Transition temperature

Answer

Sharp melting point

Answer

Definite geometry

Question 61

61. The rate of diffusion of a gas is proportional to

Answer

None of these

Question 62

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

Answer

Moderately

Question 63

63. 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 64

64. Among solids, the highest melting point is exhibited by

Answer

Ionic solids

Answer

Molecular solids

Answer

Pseudo solids

Answer

Covalent solids

Answer 157

3.0115 x 10 ²⁴

Answer 158

2.0478 x 10 ²⁴

Answer 159

4.0956 x 10 ²⁴

Answer 160

1.5057 x 10 ²⁴

Answer 161

nλ = 1/2d sin θ

Answer 162

nλ = 2 d sin θ

Answer 163

2nλ = d sin θ

Answer 164

nλ = 2 θ sin θ

Answer 165

7.0 g of Ag.

Answer 166

1 mole of S

Answer 167

3 x 10²³ atoms of C

Answer 168

2 gram atom of nitrogen

Answer 169

Decrease twice

Answer 170

Remains unchanged

Answer 171

Increase two fold

Answer 172

Be a function of the molecular mass of substance

Answer 173

Y B₂Cu₃O₇

Answer 174

Hg Be₂Ca₂Cu₂O₈

Answer 175

Yb Ba₂Cu₂O₈

Answer 176

Y Ba₂Cu₃O₇

Answer 177

Repeated extraction and small portion of solvent

Answer 178

Single extraction and small portion of solvent

Answer 179

Repeated extraction and large portion of solvent

Answer 180

Single extraction and large portion of solvent

Answer 181

CO is 3.75 times faster than CO₂

Answer 182

Both diffused at the same time

Answer 183

CO is 1.25 times faster than CO₂

Answer 184

CO₂ is 1.25 times faster than CO

Answer 185

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

Answer 186

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

Answer 187

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

Answer 188

Gases do not have a definite shape and volume

Answer 189

1489 mm of Hg

Answer 190

790 mm of Hg

Answer 191

700 mm of Hg

Answer 192

100 mm of Hg

Answer 193

Fluted filter paper

Answer 194

Normal filter paper

Answer 195

Both A & B

Answer 196

A and C have same reading and are less then B

Answer 197

Low temperature

Answer 198

High temperature

Answer 199

Both b and c

Answer 200

High pressure

Answer 201

p-block elements

Answer 202

Lanthanides

Answer 203

Transition elements

Answer 204

5.01 x 10¯²¹ g

Answer 205

1.4 x 10¯²¹ g

Answer 206

3.72 x 10¯²³ g

Answer 207

1.3 x 10¯²⁰ g

Answer 208

8.5 Pounds

Answer 209

101.325 Pa

Answer 210

He will feel cool

Answer 211

His blood pressure will increase

Answer 212

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

Answer 213

He will feel warmth

Answer 214

Dalton’s law

Answer 215

Charles’ law

Answer 216

Avogadro’s law

Answer 217

Boyle’s law

Answer 218

C₄H₁₀O₂

Answer 219

C₃H₅O₂

Answer 220

C₆H₁₀O₄

Answer 221

C₃H₁₀O₂

Answer 222

ZnS type structure

Answer 223

AB₂ type ionic compound

Answer 224

NaCl type structure

Answer 225

CsCl type structure

Answer 226

6.02 x 10²³

Answer 227

4 x 6.02 x 10²³

Answer 228

2 x 6.02 x 10²³

Answer 229

3/2 x 6.02 x 10²³

Answer 230

Solubility in polar solvents

Answer 231

Good conductivity in solid state

Answer 232

Low melting points

Answer 233

High vapour pressures

Answer 234

Trivalent impurity

Answer 235

Divalent impurity

Answer 236

Tetravalent

Answer 237

Pentavalent impurity

Answer 238

Ortho rhombic lattice

Answer 239

Cubic lattice

Answer 240

Orthogonal lattice

Answer 241

Decrease of surface tension

Answer 242

Increase of K.E of molecules

Answer 243

Increase of intermolecular interactions

Answer 244

Increase in potential energy of molecules

Answer 245

Liquid H₂

Answer 246

Liquid CO₂

Answer 247

Liquid N₂

Answer 248

Liquid O₂

Answer 249

None of these

Answer 250

Super-cooled liquid

Answer 251

Micro-crystalline solid

Answer 252

Tetrahedral manner

Answer 253

Square planner manner

Answer 254

Hexagonal manner

Answer 255

Altahydral manner

Answer 256

2 liter atm

Answer 257

1 liter atm

Answer 258

3 liter atm

Answer 259

This gives bigger size crystals

Answer 260

The filtrate is quick

Answer 261

Filtrate runs down without crystals

Answer 262

This gives medium size crystals

Answer 263

159 g/Cm²

Answer 264

159 mm Hg.

Answer 265

Boyle’s law

Answer 266

Charles’ law

Answer 267

Graham’s law

Answer 268

Dalton’s law

Answer 269

Relative abundance

Answer 270

Number of isotopes

Answer 271

Metallic compounds

Answer 272

Ionic compounds

Answer 273

Covalent compounds

Answer 274

Diatic bonds

Answer 275

Diatic bond

Answer 276

Covalent bonds

Answer 277

Ionic compounds

Answer 278

Metallic bonds

Answer 279

Is changed by about 26%

Answer 280

Is unchanged

Answer 281

Change by 33%

Answer 282

A, B and C

Answer 283

Add dilute acid to the mixture and filter

Answer 284

Add water to the mixture and filter

Answer 285

Heat the mixture and allow it to cool

Answer 286

Place the mixture in a separating funnel

Answer 287

Miller indices

Answer 288

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

Answer 289

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

Answer 290

At high pressure, the intermolecular attraction becomes significant

Answer 291

A high pressure, the volume of the gas becomes insignificant

Answer 292

Polymorphism

Answer 293

Anisotropy

Answer 294

Isomorphism

Answer 295

Tetra chloromethane

Answer 296

Tetragonal

Answer 297

Monoclinic

Answer 298

No definite geometry

Answer 299

No definite heat of fusion

Answer 300

All of these

Answer 301

No sharp melting points

Answer 302

7 crystal systems

Answer 303

14 crystal systems

Answer 304

4 crystal systems

Answer 305

3 crystal systems

Answer 306

CH₄ and AlCl₃

Answer 307

NH₃ and BF₃

Answer 308

H₂O and H⁺

Answer 309

NH₃ and H⁺

Answer 310

Rhombohedral

Answer 311

Isotropical

Answer 312

Monoclinic

Answer 313

To avoid premature crystallization of the solute

Answer 314

Increasing the rate of filtration

Answer 315

Filtering the hot saturated solution

Answer 316

To dissolve large amount of substance at its boiling point

Answer 317

Valence electrons

Answer 318

Sulphuric acid

Answer 319

Acetic acid

Answer 320

Chloroform

Answer 321

Liquid crystals

Answer 322

Ionic crystals

Answer 323

Solid crystals

Answer 324

None of these

Answer 325

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

Answer 326

The coordination number of carbon atoms is 4

Answer 327

The carbon atoms are arranged layers

Answer 328

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

Answer 329

22.4 liter

Answer 330

2.24 liter

Answer 331

Crystalline

Answer 332

Volume of O₂ required is 50 dm³

Answer 333

Volume of CO₂ formed is 60 dm³

Answer 334

Volume of O₂ required is 25 dm³

Answer 335

Volume of CO₂ formed is 25 dm³

Answer 336

Converted into wires

Answer 337

All of these

Answer 338

Converted into sheets

Answer 339

Melted easily

Answer 340

Gets a double positive charge

Answer 341

Gets a single negative charge

Answer 342

Gets a single positive charge

Answer 343

Gets a double negative charge

Answer 344

0.5 atm, and 500 K

Answer 345

1 atm, and 273 K

Answer 346

15 tm, and 500 K

Answer 347

15 atm, and 200 K

Total Questions:	150
Time Allowed:	60 Minutes
Total Marks:	150
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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