Chemistry Liquids and Solids Online Mcqs Test

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Question 1

1. 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

His blood pressure will increase

Answer

He will feel cool

Answer

He will feel warmth

Answer

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

Question 2

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

Answer

Moderately

Question 3

3. 50dm³ of CO is burnt completely according to reaction 2CO + O₂ – 2CO₂ Choose the correct statement

Answer

Volume of CO₂ formed is 60 dm³

Answer

Volume of O₂ required is 50 dm³

Answer

Volume of CO₂ formed is 25 dm³

Answer

Volume of O₂ required is 25 dm³

Question 4

4. Which forms metallic crystals?

Question 5

5. Isomorphic substance have

Answer

Different physical and same chemical properties

Answer

Different physical and chemical properties

Answer

Same physical and chemical properties

Answer

Same physical and difference chemical properties

Question 6

6. Crystals can be classified into

Answer

4 crystal systems

Answer

7 crystal systems

Answer

14 crystal systems

Answer

3 crystal systems

Question 7

7. Super conductors are derived from compounds of

Answer

Transition elements

Answer

Lanthanides

Answer

p-block elements

Question 8

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

Answer

Tetragonal

Answer

Monoclinic

Question 9

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

Answer

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

Answer

None of these

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.

Question 10

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

Question 11

11. In case of elements the polymorphism is called

Answer

Isotopic form

Answer

Crystalline forms

Answer

Isomorphism

Question 12

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

Answer

2.0478 x 10 ²⁴

Answer

3.0115 x 10 ²⁴

Answer

1.5057 x 10 ²⁴

Answer

4.0956 x 10 ²⁴

Question 13

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

Question 14

14. The allotropic forms of an element are called

Answer

Allotropes

Answer

Isoelectronic

Question 15

15. 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 16

16. Under what conditions real gases deviate from ideal behavior

Answer

Low temperature

Answer

High pressure

Answer

High temperature

Answer

Both b and c

Question 17

17. Which of the following are more temperature sensitive?

Answer

Liquid crystals

Answer

Solid crystals

Answer

Ionic crystals

Answer

None of these

Question 18

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

Answer

Tetrahedral manner

Answer

Square planner manner

Answer

Hexagonal manner

Answer

Altahydral manner

Question 19

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

Question 20

20. Ionic solids are characterized by

Answer

Low melting points

Answer

High vapour pressures

Answer

Good conductivity in solid state

Answer

Solubility in polar solvents

Question 21

21. ‘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 22

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

Answer

They melt over a range of temperature

Answer

There is no orderly arrangement of particles

Answer

They are anisotropic

Answer

There are rigid and in-compressible

Question 23

23. Solvent extraction is mostly applied to separate

Answer

None of these

Answer

Inorganic compounds

Answer

Both A and B

Answer

Organic compounds

Question 24

24. Which of the following has least mass?

Answer

2 gram atom of nitrogen

Answer

1 mole of S

Answer

3 x 10²³ atoms of C

Answer

7.0 g of Ag.

Question 25

25. Which of the following substances is not amorphous?

Question 26

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

Answer

Chromatography

Answer

Solvent extraction

Answer

Crystallization

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

Answer

8.31 L atm K¯¹ mol¯¹

Answer

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer

8.31 JK¯¹ mol¯¹

Question 29

29. If the four tubes of a car are filled to the same pressure with N₂, O₂, H₂ and helium separately, then which one will be filled first

Question 30

30. Simple molecules or giant macromolecules are examples of

Answer

Diatic bond

Answer

Covalent bonds

Answer

Ionic compounds

Answer

Metallic bonds

Question 31

31. Triple point of water is

Question 32

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

Answer

Monoclimic

Question 33

33. Which of the following is a pseudo solid?

Question 34

34. A real gas most closely approaches the behavior of an ideal gas at

Answer

1 atm, and 273 K

Answer

0.5 atm, and 500 K

Answer

15 atm, and 200 K

Answer

15 tm, and 500 K

Question 35

35. A solid may be made up of

Answer

A, B and C

Question 36

36. Which one is not the partial pressure of oxygen in air

Answer

159 g/Cm²

Answer

159 mm Hg.

Question 37

37. The material possessing superconducting properties is

Answer

Y B₂Cu₃O₇

Answer

Y Ba₂Cu₃O₇

Answer

Yb Ba₂Cu₂O₈

Answer

Hg Be₂Ca₂Cu₂O₈

Question 38

38. The surface formed by the breakage of a crystal is called _________ plane.

Question 39

39. 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

1 liter atm

Answer

3 liter atm

Answer

2 liter atm

Question 40

40. Amorphous substance posses

Answer

All of these

Answer

No definite heat of fusion

Answer

No definite geometry

Answer

No sharp melting points

Question 41

41. 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 more readily than A

Answer

B evaporates less readily than C

Answer

A and B evaporates at the same rate

Answer

A evaporates more readily than C

Question 42

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

Answer

Anisotropy

Answer

Isomorphism

Answer

Polymorphism

Question 43

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

Answer

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

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

Question 44

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

Question 45

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

Answer

Free valence electrons

Answer

Ione pair of electrons

Question 46

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

Question 47

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

Answer

High ignition temperature

Answer

High concentration

Answer

High solubility

Answer

Low temperature

Question 48

48. Correct order of intermolecular forces

Answer

Gas < liquid < solid

Answer

Liquid < gas < solid

Answer

Gas = liquid = solid

Answer

Gas < liquid < solid

Question 49

49. Potassium crystallizes with a

Answer

Ortho rhombic lattice

Answer

Orthogonal lattice

Answer

Cubic lattice

Question 50

50. 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

11.2 liters

Answer

2.24 liters

Answer

22.4 liters

Question 51

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

Answer

CH₄ and AlCl₃

Answer

NH₃ and BF₃

Answer

H₂O and H⁺

Answer

NH₃ and H⁺

Question 52

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

Answer

None of these

Answer

Both fcc and bcc

Question 53

53. Which is distilled first?

Answer

Liquid O₂

Answer

Liquid H₂

Answer

Liquid N₂

Answer

Liquid CO₂

Question 54

54. 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 55

55. 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

Isomorphous crystals

Answer

Liquid Crystals

Answer

Isomeric crystals

Answer

Allotropic crystal

Question 56

56. The increasing vapour caused by heating a liquid is due to

Answer

Increase of K.E of molecules

Answer

Increase in potential energy of molecules

Answer

Increase of intermolecular interactions

Answer

Decrease of surface tension

Question 57

57. The top of funnel stem should touch the side of the beaker because

Answer

This gives medium size crystals

Answer

This gives bigger size crystals

Answer

The filtrate is quick

Answer

Filtrate runs down without crystals

Question 58

58. Formation of a cation is?

Question 59

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

Question 60

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

Question 61

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

Answer

Oxide of the gas is strongly acidic

Answer

The gas is chlorine

Answer

A gas is liberated

Answer

Colour of the gas is greenish yellow

Question 62

62. Which solids are called true solids?

Answer

Crystalline

Question 63

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

Answer

Sulphuric acid

Answer

Chloroform

Answer

Acetic acid

Question 64

64. The molar volume of CO₂ is maximum at

Answer

273°C and 2 atm

Answer

0°C and 2 atm

Answer

127°C and 1 atm

Answer

S.T.P (0°C and 1 atm)

Answer 155

Covalent solids

Answer 156

Molecular solids

Answer 157

Ionic solids

Answer 158

Pseudo solids

Answer 159

Converted into wires

Answer 160

All of these

Answer 161

Melted easily

Answer 162

Converted into sheets

Answer 163

Single extraction and small portion of solvent

Answer 164

Single extraction and large portion of solvent

Answer 165

Repeated extraction and large portion of solvent

Answer 166

Repeated extraction and small portion of solvent

Answer 167

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

Answer 168

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

Answer 169

At high pressure, the intermolecular attraction becomes significant

Answer 170

A high pressure, the volume of the gas becomes insignificant

Answer 171

Both diffused at the same time

Answer 172

CO is 1.25 times faster than CO₂

Answer 173

CO is 3.75 times faster than CO₂

Answer 174

CO₂ is 1.25 times faster than CO

Answer 175

3.72 x 10¯²³ g

Answer 176

1.3 x 10¯²⁰ g

Answer 177

1.4 x 10¯²¹ g

Answer 178

5.01 x 10¯²¹ g

Answer 179

Liquid solid chromatography

Answer 180

Ascending paper chromatography

Answer 181

Descending paper chromatography

Answer 182

Liquid gas chromatography

Answer 183

Charles’ law

Answer 184

Avogadro’s law

Answer 185

Dalton’s law

Answer 186

Boyle’s law

Answer 187

Molecules are in chaotic motion

Answer 188

All molecular collisions are elastic

Answer 189

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

Answer 190

Molecules of all the gases have same size and same mass

Answer 191

Miller indices

Answer 192

None of these

Answer 193

Polymorphism

Answer 194

Isomorphism

Answer 195

Tetra chloromethane

Answer 196

NaCl type structure

Answer 197

ZnS type structure

Answer 198

CsCl type structure

Answer 199

AB₂ type ionic compound

Answer 200

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

Answer 201

Chemical properties

Answer 202

Arrangement of electrons in orbitals

Answer 203

Properties which depend upon mass

Answer 204

Covalent bond

Answer 205

Electrical attraction

Answer 206

Non covalent bond force

Answer 207

Electrostatic force

Answer 208

Octahedron

Answer 209

Tetrahedron

Answer 210

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

Answer 211

Decreased volume of the solution

Answer 212

Decreased covalent and hydrogen bond forces

Answer 213

Increased attraction between the molecules

Answer 214

Sublimation

Answer 215

Condensation

Answer 216

Vaporization

Answer 217

Filtration

Answer 218

Na(s) → N²⁺ (g) + 2e¯

Answer 219

Na(g) → N²⁺ (g) + e¯

Answer 220

Na(g) → N²⁺ (g) + +¯

Answer 221

Na(s) → N²⁺ (g) + e¯

Answer 222

Heat the mixture and allow it to cool

Answer 223

Add water to the mixture and filter

Answer 224

Add dilute acid to the mixture and filter

Answer 225

Place the mixture in a separating funnel

Answer 226

Increase two fold

Answer 227

Decrease twice

Answer 228

Be a function of the molecular mass of substance

Answer 229

Remains unchanged

Answer 230

All of these

Answer 231

Definite geometry

Answer 232

Transition temperature

Answer 233

Is changed by about 26%

Answer 234

Change by 33%

Answer 235

Is unchanged

Answer 236

Different physical and same chemical properties

Answer 237

Different physical and chemical properties

Answer 238

Same physical and different chemical properties

Answer 239

Same physical and chemical properties

Answer 240

Orderly arranged

Answer 241

Having wide spaces

Answer 242

Causing pressure

Answer 243

Randomly moving

Answer 244

Filtering the hot saturated solution

Answer 245

Increasing the rate of filtration

Answer 246

To dissolve large amount of substance at its boiling point

Answer 247

To avoid premature crystallization of the solute

Answer 248

None of these

Answer 249

Micro-crystalline solid

Answer 250

Super-cooled liquid

Answer 251

No definite heat of fusion

Answer 252

Definite heat of fusion

Answer 253

Sharp B.P.

Answer 254

Sharp melting points

Answer 255

558.5 x 6.022 x 10²³

Answer 256

Twice that in 60 g carbon

Answer 257

Half that in 8 g of He

Answer 258

6.022 x 10²²

Answer 259

C₄H₁₀O₂

Answer 260

C₆H₁₀O₄

Answer 261

C₃H₅O₂

Answer 262

C₃H₁₀O₂

Answer 263

10 mL of 0.02 M

Answer 264

5 mL of 0.1 M

Answer 265

10 mL of 0.5 M

Answer 266

10 mL of 0.1 M

Answer 267

Metallic compounds

Answer 268

Ionic compounds

Answer 269

Covalent compounds

Answer 270

Diatic bonds

Answer 271

One mole of NH₃ will produce ½ mole of N₂

Answer 272

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

Answer 273

One mole of NH₃ will produce 6 moles of N₂

Answer 274

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

Answer 275

None of these

Answer 276

6.02 x 10²³

Answer 277

2 x 6.02 x 10²³

Answer 278

4 x 6.02 x 10²³

Answer 279

3/2 x 6.02 x 10²³

Answer 280

Valence electrons

Answer 281

Anisotropy

Answer 282

Polymorphism

Answer 283

Isomorphism

Answer 284

Trivalent impurity

Answer 285

Divalent impurity

Answer 286

Tetravalent

Answer 287

Pentavalent impurity

Answer 288

A and C have same reading and are less then B

Answer 289

2.24 liter

Answer 290

22.4 liter

Answer 291

100°C and 2.0 atm

Answer 292

0°C and 2.0 atm

Answer 293

-10°C and 5.0 atm

Answer 294

-10°C and 2.0 atm

Answer 295

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

Answer 296

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

Answer 297

Gases do not have a definite shape and volume

Answer 298

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

Answer 299

Rhombohedral

Answer 300

Isotropical

Answer 301

Monoclinic

Answer 302

Relative abundance

Answer 303

Number of isotopes

Answer 304

CaSO₄.2H₂O

Answer 305

Much larger than the molar volumes of liquids and solids

Answer 306

About the same as the molar volumes of liquids

Answer 307

Little bit less than the molar volumes of solids

Answer 308

Little bit greater than the molar volumes of liquid

Answer 309

None of these

Answer 310

All types of atoms and molecules

Answer 311

Polar compounds

Answer 312

Charles’ law

Answer 313

Boyle’s law

Answer 314

Graham’s law

Answer 315

Dalton’s law

Answer 316

Transition temperature

Answer 317

Sharp melting point

Answer 318

Definite geometry

Answer 319

Have perfect arrangement of atoms

Answer 320

Have sharp melting point

Answer 321

Undergo clean cleave when cut with knife

Answer 322

Can possess small regions of orderly arrangement of atoms

Answer 323

Non-polar nature of gases

Answer 324

Elastic collisions of gas molecules

Answer 325

Pressure of dust particles in air

Answer 326

Different molar mass

Answer 327

6 moles of S

Answer 328

44.8 dm3 CO₂ at S.T.P

Answer 329

5.0 moles of SO₂

Answer 330

20 moles of S8

Answer 331

Gets a double negative charge

Answer 332

Gets a single positive charge

Answer 333

Gets a double positive charge

Answer 334

Gets a single negative charge

Answer 335

Both A & B

Answer 336

Fluted filter paper

Answer 337

Normal filter paper

Answer 338

8.5 Pounds

Answer 339

101.325 Pa

Answer 340

nλ = 2 d sin θ

Answer 341

nλ = 1/2d sin θ

Answer 342

2nλ = d sin θ

Answer 343

nλ = 2 θ sin θ

Answer 344

790 mm of Hg

Answer 345

100 mm of Hg

Answer 346

700 mm of Hg

Answer 347

1489 mm of Hg

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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Malik Tahir

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