Chemistry Liquids and Solids Online Mcqs Test

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Question 1

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

Question 2

2. 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

2 liter atm

Answer

1 liter atm

Answer

3 liter atm

Question 3

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

Answer

Orderly arranged

Answer

Randomly moving

Answer

Causing pressure

Answer

Having wide spaces

Question 4

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

Answer

None of these

Question 5

5. Which of the following are more temperature sensitive?

Answer

None of these

Answer

Liquid crystals

Answer

Solid crystals

Answer

Ionic crystals

Question 6

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

Answer

Covalent solids

Answer

Pseudo solids

Answer

Molecular solids

Answer

Ionic solids

Question 7

7. The allotropic forms of an element are called

Answer

Isoelectronic

Answer

Allotropes

Question 8

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

Answer

None of these

Question 9

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

Answer

Molecules are in chaotic motion

Answer

Molecules of all the gases have same size and same mass

Answer

All molecular collisions are elastic

Answer

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

Question 10

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

Answer

Na(g) → N²⁺ (g) + +¯

Answer

Na(s) → N²⁺ (g) + 2e¯

Answer

Na(g) → N²⁺ (g) + e¯

Answer

Na(s) → N²⁺ (g) + e¯

Question 11

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

Answer

CO is 1.25 times faster than CO₂

Answer

CO₂ is 1.25 times faster than CO

Answer

Both diffused at the same time

Answer

CO is 3.75 times faster than CO₂

Question 12

12. Which of the following is an example of body centered cube?

Question 13

13. Air at sea level is dense. This is a practical application of

Answer

Charles’ law

Answer

Avogadro’s law

Answer

Dalton’s law

Answer

Boyle’s law

Question 14

14. The volume in liters of CO₂ liberated at STP when 10 grams of 90% pure limestone is heated completely is

Question 15

15. Which forms metallic crystals?

Question 16

16. Which of the following has least mass?

Answer

1 mole of S

Answer

3 x 10²³ atoms of C

Answer

7.0 g of Ag.

Answer

2 gram atom of nitrogen

Question 17

17. 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 CO₂ formed is 60 dm³

Answer

Volume of O₂ required is 50 dm³

Answer

Volume of CO₂ formed is 25 dm³

Question 18

18. The introduction of Kelvin scale in thermometry is according to

Answer

Charles’ law

Answer

Graham’s law

Answer

Boyle’s law

Answer

Dalton’s law

Question 19

19. Which of the following is a pseudo solid?

Question 20

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

Answer

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

Answer

None of these

Answer

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

Answer

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

Question 21

21. 100 g of CaCO₃ is treated with 1 liter of 1 NHCl. What would be the weight of CO₂ liberated after the completion of the reaction?

Question 22

22. 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

558.5 x 6.022 x 10²³

Answer

Twice that in 60 g carbon

Question 23

23. The insoluble impurities in the saturated solution are removed by

Answer

Normal filter paper

Answer

Both A & B

Answer

Fluted filter paper

Question 24

24. 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 intermolecular attraction becomes significant

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

Question 25

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

Answer

Isomorphism

Answer

Polymorphism

Answer

Anisotropy

Question 26

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

Question 27

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

Answer

Monoclinic

Answer

Rhombohedral

Answer

Isotropical

Question 28

28. The example of hexagonal system is

Question 29

29. Ice is ________ crystal

Question 30

30. 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 31

31. How many allotropic forms are present in carbon?

Question 32

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

Question 33

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

Question 34

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

Answer

None of these

Answer

Both fcc and bcc

Question 35

35. The number of atoms contained in 11.2 L of SO₂ at S.T.P. are

Answer

3/2 x 6.02 x 10²³

Answer

6.02 x 10²³

Answer

2 x 6.02 x 10²³

Answer

4 x 6.02 x 10²³

Question 36

36. 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

0°C and 2.0 atm

Answer

-10°C and 5.0 atm

Question 37

37. Under what conditions real gases deviate from ideal behavior

Answer

Low temperature

Answer

High pressure

Answer

High temperature

Answer

Both b and c

Question 38

38. The material possessing superconducting properties is

Answer

Y B₂Cu₃O₇

Answer

Yb Ba₂Cu₂O₈

Answer

Hg Be₂Ca₂Cu₂O₈

Answer

Y Ba₂Cu₃O₇

Question 39

39. If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of substance will

Answer

Increase two fold

Answer

Remains unchanged

Answer

Be a function of the molecular mass of substance

Answer

Decrease twice

Question 40

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

Answer

Colour of the gas is greenish yellow

Answer

A gas is liberated

Answer

The gas is chlorine

Answer

Oxide of the gas is strongly acidic

Question 41

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

Question 42

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

Question 43

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

Question 44

44. The molar volume of CO₂ is maximum at

Answer

273°C and 2 atm

Answer

S.T.P (0°C and 1 atm)

Answer

127°C and 1 atm

Answer

0°C and 2 atm

Question 45

45. Crystalline solids can be identified easily from their

Answer

Definite geometry

Answer

Sharp melting point

Answer

Transition temperature

Question 46

46. Triple point of water is

Question 47

47. Solvent extraction is mostly applied to separate

Answer

Inorganic compounds

Answer

None of these

Answer

Organic compounds

Answer

Both A and B

Question 48

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

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. A malleable solid is one which can be

Answer

All of these

Answer

Converted into wires

Answer

Melted easily

Answer

Converted into sheets

Question 51

51. The phenomenon in which a single substance exist in two or more crystalline forms is called

Answer

Anisotropy

Answer

Isomorphism

Answer

Polymorphism

Question 52

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

Answer

Moderately

Question 53

53. In diamond, the carbon atoms are arranged in a

Answer

Square planner manner

Answer

Hexagonal manner

Answer

Altahydral manner

Answer

Tetrahedral manner

Question 54

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

Answer

Monoclimic

Question 55

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

Answer

Chromatography

Answer

Solvent extraction

Answer

Crystallization

Question 56

56. Solvents of covalent compounds include all but

Answer

Tetra chloromethane

Question 57

57. Which of the following pairs do not form a dative covalent bond to each other?

Answer

CH₄ and AlCl₃

Answer

H₂O and H⁺

Answer

NH₃ and H⁺

Answer

NH₃ and BF₃

Question 58

58. Which solids are called true solids?

Answer

Crystalline

Question 59

59. Ionic solids are characterized by

Answer

High vapour pressures

Answer

Solubility in polar solvents

Answer

Low melting points

Answer

Good conductivity in solid state

Question 60

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

Question 61

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

Answer

Acetic acid

Answer

Sulphuric acid

Answer

Chloroform

Question 62

62. The crystal structure having face centered cubic arrangement is

Question 63

63. Poor conductors of electricity is a characteristic of

Answer

Ionic compounds

Answer

Diatic bonds

Answer

Covalent compounds

Answer

Metallic compounds

Question 64

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

Answer

C₄H₁₀O₂

Answer

C₃H₅O₂

Answer

C₃H₁₀O₂

Answer

C₆H₁₀O₄

Answer 147

Non covalent bond force

Answer 148

Electrical attraction

Answer 149

Covalent bond

Answer 150

Electrostatic force

Answer 151

Miller indices

Answer 152

Filtering the hot saturated solution

Answer 153

To dissolve large amount of substance at its boiling point

Answer 154

Increasing the rate of filtration

Answer 155

To avoid premature crystallization of the solute

Answer 156

His blood pressure will increase

Answer 157

He will feel warmth

Answer 158

He will feel cool

Answer 159

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

Answer 160

22.4 liter

Answer 161

2.24 liter

Answer 162

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

Answer 163

One mole of NH₃ will produce 6 moles of N₂

Answer 164

One mole of NH₃ will produce ½ mole of N₂

Answer 165

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

Answer 166

Valence electrons

Answer 167

44.8 dm3 CO₂ at S.T.P

Answer 168

6 moles of S

Answer 169

20 moles of S8

Answer 170

5.0 moles of SO₂

Answer 171

nλ = 2 d sin θ

Answer 172

2nλ = d sin θ

Answer 173

nλ = 1/2d sin θ

Answer 174

nλ = 2 θ sin θ

Answer 175

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

Answer 176

Increased attraction between the molecules

Answer 177

Decreased volume of the solution

Answer 178

Decreased covalent and hydrogen bond forces

Answer 179

15 tm, and 500 K

Answer 180

1 atm, and 273 K

Answer 181

0.5 atm, and 500 K

Answer 182

15 atm, and 200 K

Answer 183

Have perfect arrangement of atoms

Answer 184

Undergo clean cleave when cut with knife

Answer 185

Have sharp melting point

Answer 186

Can possess small regions of orderly arrangement of atoms

Answer 187

Polar compounds

Answer 188

All types of atoms and molecules

Answer 189

Gets a single positive charge

Answer 190

Gets a double negative charge

Answer 191

Gets a double positive charge

Answer 192

Gets a single negative charge

Answer 193

Liquid gas chromatography

Answer 194

Liquid solid chromatography

Answer 195

Descending paper chromatography

Answer 196

Ascending paper chromatography

Answer 197

B evaporates less readily than C

Answer 198

A evaporates more readily than C

Answer 199

B evaporates more readily than A

Answer 200

A and B evaporates at the same rate

Answer 201

Polymorphism

Answer 202

None of these

Answer 203

Isomorphism

Answer 204

Covalent bonds

Answer 205

Metallic bonds

Answer 206

Ionic compounds

Answer 207

Diatic bond

Answer 208

CaSO₄.2H₂O

Answer 209

Is unchanged

Answer 210

Is changed by about 26%

Answer 211

Change by 33%

Answer 212

A and C have same reading and are less then B

Answer 213

Same physical and chemical properties

Answer 214

Same physical and different chemical properties

Answer 215

Different physical and same chemical properties

Answer 216

Different physical and chemical properties

Answer 217

Filtration

Answer 218

Condensation

Answer 219

Sublimation

Answer 220

Vaporization

Answer 221

Arrangement of electrons in orbitals

Answer 222

Chemical properties

Answer 223

Properties which depend upon mass

Answer 224

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

Answer 225

Isomorphous crystals

Answer 226

Allotropic crystal

Answer 227

Liquid Crystals

Answer 228

Isomeric crystals

Answer 229

Liquid O₂

Answer 230

Liquid N₂

Answer 231

Liquid H₂

Answer 232

Liquid CO₂

Answer 233

Isomorphism

Answer 234

Crystalline forms

Answer 235

Isotopic form

Answer 236

CsCl type structure

Answer 237

ZnS type structure

Answer 238

NaCl type structure

Answer 239

AB₂ type ionic compound

Answer 240

Increase in potential energy of molecules

Answer 241

Decrease of surface tension

Answer 242

Increase of intermolecular interactions

Answer 243

Increase of K.E of molecules

Answer 244

3.0115 x 10 ²⁴

Answer 245

4.0956 x 10 ²⁴

Answer 246

1.5057 x 10 ²⁴

Answer 247

2.0478 x 10 ²⁴

Answer 248

5 mL of 0.1 M

Answer 249

10 mL of 0.02 M

Answer 250

10 mL of 0.1 M

Answer 251

10 mL of 0.5 M

Answer 252

Pressure of dust particles in air

Answer 253

Different molar mass

Answer 254

Non-polar nature of gases

Answer 255

Elastic collisions of gas molecules

Answer 256

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 257

8.31 JK¯¹ mol¯¹

Answer 258

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 259

8.31 L atm K¯¹ mol¯¹

Answer 260

Tetravalent

Answer 261

Trivalent impurity

Answer 262

Divalent impurity

Answer 263

Pentavalent impurity

Answer 264

Filtrate runs down without crystals

Answer 265

This gives bigger size crystals

Answer 266

The filtrate is quick

Answer 267

This gives medium size crystals

Answer 268

None of these

Answer 269

Micro-crystalline solid

Answer 270

Super-cooled liquid

Answer 271

A, B and C

Answer 272

No sharp melting points

Answer 273

No definite geometry

Answer 274

All of these

Answer 275

No definite heat of fusion

Answer 276

Definite geometry

Answer 277

Transition temperature

Answer 278

All of these

Answer 279

100 mm of Hg

Answer 280

1489 mm of Hg

Answer 281

700 mm of Hg

Answer 282

790 mm of Hg

Answer 283

3 crystal systems

Answer 284

4 crystal systems

Answer 285

7 crystal systems

Answer 286

14 crystal systems

Answer 287

Relative abundance

Answer 288

Number of isotopes

Answer 289

Same physical and difference chemical properties

Answer 290

Different physical and chemical properties

Answer 291

Different physical and same chemical properties

Answer 292

Same physical and chemical properties

Answer 293

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

Answer 294

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

Answer 295

Gases do not have a definite shape and volume

Answer 296

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

Answer 297

Lanthanides

Answer 298

p-block elements

Answer 299

Transition elements

Answer 300

Add water to the mixture and filter

Answer 301

Heat the mixture and allow it to cool

Answer 302

Add dilute acid to the mixture and filter

Answer 303

Place the mixture in a separating funnel

Answer 304

159 mm Hg.

Answer 305

159 g/Cm²

Answer 306

22.4 liters

Answer 307

2.24 liters

Answer 308

11.2 liters

Answer 309

101.325 Pa

Answer 310

8.5 Pounds

Answer 311

5.01 x 10¯²¹ g

Answer 312

1.4 x 10¯²¹ g

Answer 313

3.72 x 10¯²³ g

Answer 314

1.3 x 10¯²⁰ g

Answer 315

The carbon atoms are arranged layers

Answer 316

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

Answer 317

The coordination number of carbon atoms is 4

Answer 318

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

Answer 319

Tetragonal

Answer 320

Monoclinic

Answer 321

Repeated extraction and large portion of solvent

Answer 322

Single extraction and large portion of solvent

Answer 323

Repeated extraction and small portion of solvent

Answer 324

Single extraction and small portion of solvent

Answer 325

Little bit greater than the molar volumes of liquid

Answer 326

About the same as the molar volumes of liquids

Answer 327

Much larger than the molar volumes of liquids and solids

Answer 328

Little bit less than the molar volumes of solids

Answer 329

High solubility

Answer 330

Low temperature

Answer 331

High ignition temperature

Answer 332

High concentration

Answer 333

Octahedron

Answer 334

Tetrahedron

Answer 335

They melt over a range of temperature

Answer 336

There are rigid and in-compressible

Answer 337

There is no orderly arrangement of particles

Answer 338

They are anisotropic

Answer 339

Ortho rhombic lattice

Answer 340

Cubic lattice

Answer 341

Orthogonal lattice

Answer 342

Ione pair of electrons

Answer 343

Free valence electrons

Answer 344

Liquid < gas < solid

Answer 345

Gas < liquid < solid

Answer 346

Gas < liquid < solid

Answer 347

Gas = liquid = solid

Total Questions:	150
Time Allowed:	60 Minutes
Total Marks:	150
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Important Chemistry Solids Question and Answer

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