Chemistry Liquids and Solids Online Mcqs Test

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Question 1

1. Which forms metallic crystals?

Question 2

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

Answer

Pressure of dust particles in air

Answer

Elastic collisions of gas molecules

Answer

Non-polar nature of gases

Answer

Different molar mass

Question 3

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

Answer

Sublimation

Answer

Condensation

Answer

Filtration

Answer

Vaporization

Question 4

4. At STP, a container has 1 mole of Ar, 2 moles of CO₂, 3 moles of O₂ and 4 moles of N₂, Without changing the total pressure if one mole of O₂ is removed, the partial pressure of O₂

Answer

Is unchanged

Answer

Is changed by about 26%

Answer

Change by 33%

Question 5

5. 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 6

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

Answer

Normal filter paper

Answer

Fluted filter paper

Answer

Both A & B

Question 7

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

Answer

Isomorphism

Answer

Polymorphism

Answer

Anisotropy

Question 8

8. In a cubic lattice, a unit cell is shared equally by how many unit cells?

Question 9

9. Solvent extraction is mostly applied to separate

Answer

Organic compounds

Answer

Both A and B

Answer

None of these

Answer

Inorganic compounds

Question 10

10. Half atmospheric pressure is

Answer

8.5 Pounds

Answer

101.325 Pa

Question 11

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

Question 12

12. Ionic solids are characterized by

Answer

High vapour pressures

Answer

Good conductivity in solid state

Answer

Solubility in polar solvents

Answer

Low melting points

Question 13

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

Answer

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

Answer

At high pressure, the intermolecular attraction becomes significant

Answer

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

Answer

A high pressure, the volume of the gas becomes insignificant

Question 14

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

Question 15

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

Answer

None of these

Question 16

16. When one of the following statements is wrong for gases?

Answer

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

Answer

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

Answer

Gases do not have a definite shape and volume

Answer

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

Question 17

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

Question 18

18. Which of the following statements about graphite is not true?

Answer

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

Answer

The coordination number of carbon atoms is 4

Answer

The carbon atoms are arranged layers

Answer

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

Question 19

19. Solvents of covalent compounds include all but

Answer

Tetra chloromethane

Question 20

20. ‘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 21

21. In a crystal a ≠ b ≠ c, a = ϒ = 90° and β ≠ 90°. It is

Answer

Monoclinic

Answer

Tetragonal

Question 22

22. The example of hexagonal system is

Question 23

23. The volume occupied by 1.4g of N₂ at S.T.P is

Question 24

24. Which of the following substances is not amorphous?

Question 25

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

Answer

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

Question 26

26. The crystal structure having face centered cubic arrangement is

Question 27

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

Question 28

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

Answer

High ignition temperature

Answer

Low temperature

Answer

High solubility

Answer

High concentration

Question 29

29. 50dm³ of CO is burnt completely according to reaction 2CO + O₂ – 2CO₂ Choose the correct statement

Answer

Volume of O₂ required is 50 dm³

Answer

Volume of O₂ required is 25 dm³

Answer

Volume of CO₂ formed is 25 dm³

Answer

Volume of CO₂ formed is 60 dm³

Question 30

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

Answer

The gas is chlorine

Answer

Oxide of the gas is strongly acidic

Answer

A gas is liberated

Answer

Colour of the gas is greenish yellow

Question 31

31. Amorphous substance posses

Answer

No definite geometry

Answer

No definite heat of fusion

Answer

All of these

Answer

No sharp melting points

Question 32

32. The weight of one molecule of a compound C₆₀H₁₂₂ is

Answer

5.01 x 10¯²¹ g

Answer

1.3 x 10¯²⁰ g

Answer

3.72 x 10¯²³ g

Answer

1.4 x 10¯²¹ g

Question 33

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

Answer

Na(s) → N²⁺ (g) + 2e¯

Answer

Na(g) → N²⁺ (g) + +¯

Answer

Na(g) → N²⁺ (g) + e¯

Answer

Na(s) → N²⁺ (g) + e¯

Question 34

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

Answer

Ionic solids

Answer

Pseudo solids

Answer

Molecular solids

Answer

Covalent solids

Question 35

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

Question 36

36. The mass of one mole of electron is

Question 37

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

Question 38

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

Answer

Octahedron

Answer

Tetrahedron

Question 39

39. 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 40

40. 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 41

41. Correct order of intermolecular forces

Answer

Liquid < gas < solid

Answer

Gas < liquid < solid

Answer

Gas < liquid < solid

Answer

Gas = liquid = solid

Question 42

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

Question 43

43. 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

Be a function of the molecular mass of substance

Answer

Remains unchanged

Answer

Decrease twice

Question 44

44. Potassium crystallizes with a

Answer

Orthogonal lattice

Answer

Ortho rhombic lattice

Answer

Cubic lattice

Question 45

45. Which is distilled first?

Answer

Liquid O₂

Answer

Liquid CO₂

Answer

Liquid N₂

Answer

Liquid H₂

Question 46

46. Van der Waal’s forces exist in

Answer

All types of atoms and molecules

Answer

Polar compounds

Question 47

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

Question 48

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

Answer

Descending paper chromatography

Answer

Liquid gas chromatography

Answer

Liquid solid chromatography

Answer

Ascending paper chromatography

Question 49

49. The coordination number 8:8 is found in the arrangement of

Answer

NaCl type structure

Answer

AB₂ type ionic compound

Answer

ZnS type structure

Answer

CsCl type structure

Question 50

50. 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

B evaporates more readily than A

Answer

A evaporates more readily than C

Question 51

51. Which solids are called true solids?

Answer

Crystalline

Question 52

52. Isotopes differ in

Answer

Properties which depend upon mass

Answer

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

Answer

Chemical properties

Answer

Arrangement of electrons in orbitals

Question 53

53. Ice is ________ crystal

Question 54

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

Answer

Moderately

Question 55

55. Which of the following is a pseudo solid?

Question 56

56. The material possessing superconducting properties is

Answer

Yb Ba₂Cu₂O₈

Answer

Hg Be₂Ca₂Cu₂O₈

Answer

Y B₂Cu₃O₇

Answer

Y Ba₂Cu₃O₇

Question 57

57. The allotropic forms of an element are called

Answer

Allotropes

Answer

Isoelectronic

Question 58

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

Answer

None of these

Answer

Polymorphism

Answer

Isomorphism

Question 59

59. Particles that most effects material properties

Answer

Valence electrons

Question 60

60. At constant temperature, the pressure of an ideal gas is doubled, its density becomes

Question 61

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

Answer

790 mm of Hg

Answer

100 mm of Hg

Answer

700 mm of Hg

Answer

1489 mm of Hg

Question 62

62. Super conductors are derived from compounds of

Answer

Lanthanides

Answer

Transition elements

Answer

p-block elements

Question 63

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

Answer

They are anisotropic

Answer

There are rigid and in-compressible

Answer

There is no orderly arrangement of particles

Answer

They melt over a range of temperature

Question 64

64. A malleable solid is one which can be

Answer

Melted easily

Answer

All of these

Answer

Converted into sheets

Answer

Converted into wires

Answer 146

Decreased covalent and hydrogen bond forces

Answer 147

Decreased volume of the solution

Answer 148

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

Answer 149

Increased attraction between the molecules

Answer 150

2.24 liter

Answer 151

22.4 liter

Answer 152

Transition temperature

Answer 153

All of these

Answer 154

Definite geometry

Answer 155

H₂O and H⁺

Answer 156

NH₃ and BF₃

Answer 157

CH₄ and AlCl₃

Answer 158

NH₃ and H⁺

Answer 159

14 crystal systems

Answer 160

4 crystal systems

Answer 161

7 crystal systems

Answer 162

3 crystal systems

Answer 163

11.2 liters

Answer 164

2.24 liters

Answer 165

22.4 liters

Answer 166

Much larger than the molar volumes of liquids and solids

Answer 167

Little bit greater than the molar volumes of liquid

Answer 168

Little bit less than the molar volumes of solids

Answer 169

About the same as the molar volumes of liquids

Answer 170

10 mL of 0.1 M

Answer 171

10 mL of 0.5 M

Answer 172

10 mL of 0.02 M

Answer 173

5 mL of 0.1 M

Answer 174

CO₂ is 1.25 times faster than CO

Answer 175

CO is 1.25 times faster than CO₂

Answer 176

Both diffused at the same time

Answer 177

CO is 3.75 times faster than CO₂

Answer 178

Monoclimic

Answer 179

Single extraction and small portion of solvent

Answer 180

Repeated extraction and small portion of solvent

Answer 181

Single extraction and large portion of solvent

Answer 182

Repeated extraction and large portion of solvent

Answer 183

Randomly moving

Answer 184

Having wide spaces

Answer 185

Orderly arranged

Answer 186

Causing pressure

Answer 187

6.02 x 10²³

Answer 188

4 x 6.02 x 10²³

Answer 189

3/2 x 6.02 x 10²³

Answer 190

2 x 6.02 x 10²³

Answer 191

Ionic crystals

Answer 192

Liquid crystals

Answer 193

None of these

Answer 194

Solid crystals

Answer 195

Dalton’s law

Answer 196

Boyle’s law

Answer 197

Graham’s law

Answer 198

Charles’ law

Answer 199

CaSO₄.2H₂O

Answer 200

Liquid Crystals

Answer 201

Allotropic crystal

Answer 202

Isomorphous crystals

Answer 203

Isomeric crystals

Answer 204

A, B and C

Answer 205

2 gram atom of nitrogen

Answer 206

1 mole of S

Answer 207

3 x 10²³ atoms of C

Answer 208

7.0 g of Ag.

Answer 209

Pentavalent impurity

Answer 210

Trivalent impurity

Answer 211

Tetravalent

Answer 212

Divalent impurity

Answer 213

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

Answer 214

One mole of NH₃ will produce 6 moles of N₂

Answer 215

One mole of NH₃ will produce ½ mole of N₂

Answer 216

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

Answer 217

159 mm Hg.

Answer 218

159 g/Cm²

Answer 219

Same physical and difference chemical properties

Answer 220

Different physical and same chemical properties

Answer 221

Different physical and chemical properties

Answer 222

Same physical and chemical properties

Answer 223

1 liter atm

Answer 224

3 liter atm

Answer 225

2 liter atm

Answer 226

Isotropical

Answer 227

Rhombohedral

Answer 228

Monoclinic

Answer 229

To dissolve large amount of substance at its boiling point

Answer 230

Increasing the rate of filtration

Answer 231

Filtering the hot saturated solution

Answer 232

To avoid premature crystallization of the solute

Answer 233

C₃H₁₀O₂

Answer 234

C₄H₁₀O₂

Answer 235

C₆H₁₀O₄

Answer 236

C₃H₅O₂

Answer 237

6.022 x 10²²

Answer 238

558.5 x 6.022 x 10²³

Answer 239

Half that in 8 g of He

Answer 240

Twice that in 60 g carbon

Answer 241

Increase of intermolecular interactions

Answer 242

Increase of K.E of molecules

Answer 243

Decrease of surface tension

Answer 244

Increase in potential energy of molecules

Answer 245

1 atm, and 273 K

Answer 246

15 tm, and 500 K

Answer 247

15 atm, and 200 K

Answer 248

0.5 atm, and 500 K

Answer 249

Covalent bonds

Answer 250

Diatic bond

Answer 251

Ionic compounds

Answer 252

Metallic bonds

Answer 253

Square planner manner

Answer 254

Hexagonal manner

Answer 255

Altahydral manner

Answer 256

Tetrahedral manner

Answer 257

Place the mixture in a separating funnel

Answer 258

Add dilute acid to the mixture and filter

Answer 259

Heat the mixture and allow it to cool

Answer 260

Add water to the mixture and filter

Answer 261

Filtrate runs down without crystals

Answer 262

This gives bigger size crystals

Answer 263

This gives medium size crystals

Answer 264

The filtrate is quick

Answer 265

2.0478 x 10 ²⁴

Answer 266

4.0956 x 10 ²⁴

Answer 267

3.0115 x 10 ²⁴

Answer 268

1.5057 x 10 ²⁴

Answer 269

20 moles of S8

Answer 270

6 moles of S

Answer 271

5.0 moles of SO₂

Answer 272

44.8 dm3 CO₂ at S.T.P

Answer 273

Electrical attraction

Answer 274

Covalent bond

Answer 275

Electrostatic force

Answer 276

Non covalent bond force

Answer 277

Sharp melting point

Answer 278

Definite geometry

Answer 279

Transition temperature

Answer 280

A and C have same reading and are less then B

Answer 281

Boyle’s law

Answer 282

Avogadro’s law

Answer 283

Dalton’s law

Answer 284

Charles’ law

Answer 285

nλ = 2 θ sin θ

Answer 286

2nλ = d sin θ

Answer 287

nλ = 1/2d sin θ

Answer 288

nλ = 2 d sin θ

Answer 289

Chloroform

Answer 290

Sulphuric acid

Answer 291

Acetic acid

Answer 292

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

Answer 293

He will feel warmth

Answer 294

He will feel cool

Answer 295

His blood pressure will increase

Answer 296

Miller indices

Answer 297

Isomorphism

Answer 298

Anisotropy

Answer 299

Polymorphism

Answer 300

Same physical and chemical properties

Answer 301

Different physical and same chemical properties

Answer 302

Same physical and different chemical properties

Answer 303

Different physical and chemical properties

Answer 304

No definite heat of fusion

Answer 305

Sharp melting points

Answer 306

Sharp B.P.

Answer 307

Definite heat of fusion

Answer 308

Micro-crystalline solid

Answer 309

None of these

Answer 310

Super-cooled liquid

Answer 311

127°C and 1 atm

Answer 312

0°C and 2 atm

Answer 313

273°C and 2 atm

Answer 314

S.T.P (0°C and 1 atm)

Answer 315

Gets a double positive charge

Answer 316

Gets a single negative charge

Answer 317

Gets a single positive charge

Answer 318

Gets a double negative charge

Answer 319

High pressure

Answer 320

Both b and c

Answer 321

Low temperature

Answer 322

High temperature

Answer 323

Number of isotopes

Answer 324

Relative abundance

Answer 325

None of these

Answer 326

Solvent extraction

Answer 327

Chromatography

Answer 328

Crystallization

Answer 329

Both fcc and bcc

Answer 330

None of these

Answer 331

Isotopic form

Answer 332

Crystalline forms

Answer 333

Isomorphism

Answer 334

Have perfect arrangement of atoms

Answer 335

Have sharp melting point

Answer 336

Undergo clean cleave when cut with knife

Answer 337

Can possess small regions of orderly arrangement of atoms

Answer 338

Covalent compounds

Answer 339

Metallic compounds

Answer 340

Diatic bonds

Answer 341

Ionic compounds

Answer 342

Free valence electrons

Answer 343

Ione pair of electrons

Answer 344

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 345

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 346

8.31 L atm K¯¹ mol¯¹

Answer 347

8.31 JK¯¹ mol¯¹

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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Important Chemistry Solids Question and Answer

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