Chemistry Liquids and Solids Online Mcqs Test

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Question 1

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

Answer

Ionic solids

Answer

Pseudo solids

Answer

Molecular solids

Answer

Covalent solids

Question 2

2. Potassium crystallizes with a

Answer

Cubic lattice

Answer

Ortho rhombic lattice

Answer

Orthogonal lattice

Question 3

3. Ice is ________ crystal

Question 4

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

Question 5

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

Answer

Normal filter paper

Answer

Fluted filter paper

Answer

Both A & B

Question 6

6. Current strength measure by electrometer by each type of ions in mass spectrometry shows?

Answer

Relative abundance

Answer

Number of isotopes

Question 7

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

Answer

Ione pair of electrons

Answer

Free valence electrons

Question 8

8. Repeatable entity of a crystal structure is known as

Answer

Miller indices

Question 9

9. Crystalline solids can be identified easily from their

Answer

Transition temperature

Answer

Sharp melting point

Answer

Definite geometry

Question 10

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

Question 11

11. Crystalline solids can be identified easily by their

Answer

All of these

Answer

Definite geometry

Answer

Transition temperature

Question 12

12. A bottle of copper (II) oxide has been contaminated with some solid, NaCl, How can NaCl be removed from the Copper (II) oxide?

Answer

Add dilute acid to the mixture and filter

Answer

Add water to the mixture and filter

Answer

Heat the mixture and allow it to cool

Answer

Place the mixture in a separating funnel

Question 13

13. Simple molecules or giant macromolecules are examples of

Answer

Covalent bonds

Answer

Ionic compounds

Answer

Metallic bonds

Answer

Diatic bond

Question 14

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

Answer

Anisotropy

Answer

Polymorphism

Answer

Isomorphism

Question 15

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

Answer

None of these

Question 16

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

Answer

Polymorphism

Answer

Anisotropy

Answer

Isomorphism

Question 17

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

Question 18

18. Van der Waal’s forces exist in

Answer

All types of atoms and molecules

Answer

Polar compounds

Question 19

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

Answer

Tetravalent

Answer

Trivalent impurity

Answer

Divalent impurity

Answer

Pentavalent impurity

Question 20

20. 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

3 liter atm

Answer

1 liter atm

Question 21

21. Which of the following is a pseudo solid?

Question 22

22. Isotopes differ in

Answer

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

Answer

Properties which depend upon mass

Answer

Chemical properties

Answer

Arrangement of electrons in orbitals

Question 23

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

Answer

The carbon atoms are arranged layers

Answer

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

Answer

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

Answer

The coordination number of carbon atoms is 4

Question 24

24. 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 and B evaporates at the same rate

Answer

A evaporates more readily than C

Question 25

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

Question 26

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

Answer

Pressure of dust particles in air

Answer

Non-polar nature of gases

Answer

Elastic collisions of gas molecules

Answer

Different molar mass

Question 27

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

Question 28

28. Ionic solids are characterized by

Answer

Solubility in polar solvents

Answer

Good conductivity in solid state

Answer

High vapour pressures

Answer

Low melting points

Question 29

29. The example of hexagonal system is

Question 30

30. Particles that most effects material properties

Answer

Valence electrons

Question 31

31. The material possessing superconducting properties is

Answer

Y B₂Cu₃O₇

Answer

Y Ba₂Cu₃O₇

Answer

Hg Be₂Ca₂Cu₂O₈

Answer

Yb Ba₂Cu₂O₈

Question 32

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

Question 33

33. Which of the following are more temperature sensitive?

Answer

Liquid crystals

Answer

Ionic crystals

Answer

Solid crystals

Answer

None of these

Question 34

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

Answer

1.5057 x 10 ²⁴

Answer

4.0956 x 10 ²⁴

Answer

3.0115 x 10 ²⁴

Answer

2.0478 x 10 ²⁴

Question 35

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

Question 36

36. In forming an ionic bond in potassium fluoride, the potassium ion

Answer

Gets a double negative charge

Answer

Gets a double positive charge

Answer

Gets a single positive charge

Answer

Gets a single negative charge

Question 37

37. Crystals can be classified into

Answer

7 crystal systems

Answer

4 crystal systems

Answer

3 crystal systems

Answer

14 crystal systems

Question 38

38. Under what conditions real gases deviate from ideal behavior

Answer

Low temperature

Answer

High pressure

Answer

High temperature

Answer

Both b and c

Question 39

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

Answer

Increase of K.E of molecules

Answer

Decrease of surface tension

Answer

Increase of intermolecular interactions

Answer

Increase in potential energy of molecules

Question 40

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

Answer

Both diffused at the same time

Answer

CO is 1.25 times faster than CO₂

Answer

CO is 3.75 times faster than CO₂

Answer

CO₂ is 1.25 times faster than CO

Question 41

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

Answer

Square planner manner

Answer

Tetrahedral manner

Answer

Altahydral manner

Answer

Hexagonal manner

Question 42

42. Solvent extraction is mostly applied to separate

Answer

Organic compounds

Answer

Both A and B

Answer

Inorganic compounds

Answer

None of these

Question 43

43. 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 44

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

Question 45

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

Question 46

46. Which of the following is isotropic

Question 47

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

Answer

All molecular collisions are elastic

Answer

Molecules are in chaotic motion

Answer

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

Answer

Molecules of all the gases have same size and same mass

Question 48

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

Answer

They are anisotropic

Answer

There is no orderly arrangement of particles

Answer

They melt over a range of temperature

Answer

There are rigid and in-compressible

Question 49

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

Answer

High concentration

Answer

High solubility

Answer

High ignition temperature

Answer

Low temperature

Question 50

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

Answer

Moderately

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

Isomorphous crystals

Answer

Liquid Crystals

Answer

Isomeric crystals

Answer

Allotropic crystal

Question 52

52. Which forms metallic crystals?

Question 53

53. Correct order of intermolecular forces

Answer

Liquid < gas < solid

Answer

Gas = liquid = solid

Answer

Gas < liquid < solid

Answer

Gas < liquid < solid

Question 54

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

Answer

Sulphuric acid

Answer

Chloroform

Answer

Acetic acid

Question 55

55. 50dm³ of CO is burnt completely according to reaction 2CO + O₂ – 2CO₂ Choose the correct statement

Answer

Volume of CO₂ formed is 25 dm³

Answer

Volume of O₂ required is 25 dm³

Answer

Volume of CO₂ formed is 60 dm³

Answer

Volume of O₂ required is 50 dm³

Question 56

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

Question 57

57. 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 58

58. Bragg’s law is given by equation

Answer

nλ = 2 d sin θ

Answer

nλ = 2 θ sin θ

Answer

2nλ = d sin θ

Answer

nλ = 1/2d sin θ

Question 59

59. 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 60

60. 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

Change by 33%

Answer

Is changed by about 26%

Question 61

61. Super conductors are derived from compounds of

Answer

Lanthanides

Answer

p-block elements

Answer

Transition elements

Question 62

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

Answer

Non covalent bond force

Answer

Electrostatic force

Answer

Electrical attraction

Answer

Covalent bond

Question 63

63. 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

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

Answer

None of these

Answer

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

Question 64

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

Answer

Monoclinic

Answer

Tetragonal

Answer 159

Octahedron

Answer 160

Tetrahedron

Answer 161

20 moles of S8

Answer 162

5.0 moles of SO₂

Answer 163

6 moles of S

Answer 164

44.8 dm3 CO₂ at S.T.P

Answer 165

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

Answer 166

One mole of NH₃ will produce ½ mole of N₂

Answer 167

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

Answer 168

One mole of NH₃ will produce 6 moles of N₂

Answer 169

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

Answer 170

Gases do not have a definite shape and volume

Answer 171

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

Answer 172

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

Answer 173

Filtering the hot saturated solution

Answer 174

To avoid premature crystallization of the solute

Answer 175

Increasing the rate of filtration

Answer 176

To dissolve large amount of substance at its boiling point

Answer 177

A and C have same reading and are less then B

Answer 178

Increase two fold

Answer 179

Be a function of the molecular mass of substance

Answer 180

Remains unchanged

Answer 181

Decrease twice

Answer 182

-10°C and 5.0 atm

Answer 183

0°C and 2.0 atm

Answer 184

100°C and 2.0 atm

Answer 185

-10°C and 2.0 atm

Answer 186

Different physical and chemical properties

Answer 187

Same physical and different chemical properties

Answer 188

Different physical and same chemical properties

Answer 189

Same physical and chemical properties

Answer 190

Sharp melting points

Answer 191

Definite heat of fusion

Answer 192

No definite heat of fusion

Answer 193

Sharp B.P.

Answer 194

Orderly arranged

Answer 195

Having wide spaces

Answer 196

Causing pressure

Answer 197

Randomly moving

Answer 198

7.0 g of Ag.

Answer 199

3 x 10²³ atoms of C

Answer 200

1 mole of S

Answer 201

2 gram atom of nitrogen

Answer 202

Avogadro’s law

Answer 203

Dalton’s law

Answer 204

Charles’ law

Answer 205

Boyle’s law

Answer 206

A high pressure, the volume of the gas becomes insignificant

Answer 207

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

Answer 208

At high pressure, the intermolecular attraction becomes significant

Answer 209

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

Answer 210

Isotropical

Answer 211

Rhombohedral

Answer 212

Monoclinic

Answer 213

Colour of the gas is greenish yellow

Answer 214

The gas is chlorine

Answer 215

A gas is liberated

Answer 216

Oxide of the gas is strongly acidic

Answer 217

C₃H₅O₂

Answer 218

C₄H₁₀O₂

Answer 219

C₃H₁₀O₂

Answer 220

C₆H₁₀O₄

Answer 221

790 mm of Hg

Answer 222

100 mm of Hg

Answer 223

700 mm of Hg

Answer 224

1489 mm of Hg

Answer 225

Monoclimic

Answer 226

This gives bigger size crystals

Answer 227

Filtrate runs down without crystals

Answer 228

This gives medium size crystals

Answer 229

The filtrate is quick

Answer 230

Boyle’s law

Answer 231

Dalton’s law

Answer 232

Charles’ law

Answer 233

Graham’s law

Answer 234

Micro-crystalline solid

Answer 235

Super-cooled liquid

Answer 236

None of these

Answer 237

Solvent extraction

Answer 238

Chromatography

Answer 239

Crystallization

Answer 240

Undergo clean cleave when cut with knife

Answer 241

Have perfect arrangement of atoms

Answer 242

Have sharp melting point

Answer 243

Can possess small regions of orderly arrangement of atoms

Answer 244

Isotopic form

Answer 245

Isomorphism

Answer 246

Crystalline forms

Answer 247

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

Answer 248

Decreased volume of the solution

Answer 249

Decreased covalent and hydrogen bond forces

Answer 250

Increased attraction between the molecules

Answer 251

Liquid H₂

Answer 252

Liquid CO₂

Answer 253

Liquid N₂

Answer 254

Liquid O₂

Answer 255

Condensation

Answer 256

Vaporization

Answer 257

Filtration

Answer 258

Sublimation

Answer 259

He will feel warmth

Answer 260

He will feel cool

Answer 261

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

Answer 262

His blood pressure will increase

Answer 263

Single extraction and large portion of solvent

Answer 264

Repeated extraction and large portion of solvent

Answer 265

Single extraction and small portion of solvent

Answer 266

Repeated extraction and small portion of solvent

Answer 267

All of these

Answer 268

No definite geometry

Answer 269

No sharp melting points

Answer 270

No definite heat of fusion

Answer 271

Little bit less than the molar volumes of solids

Answer 272

Much larger than the molar volumes of liquids and solids

Answer 273

Little bit greater than the molar volumes of liquid

Answer 274

About the same as the molar volumes of liquids

Answer 275

Different physical and chemical properties

Answer 276

Same physical and difference chemical properties

Answer 277

Different physical and same chemical properties

Answer 278

Same physical and chemical properties

Answer 279

15 tm, and 500 K

Answer 280

0.5 atm, and 500 K

Answer 281

1 atm, and 273 K

Answer 282

15 atm, and 200 K

Answer 283

159 mm Hg.

Answer 284

159 g/Cm²

Answer 285

10 mL of 0.1 M

Answer 286

10 mL of 0.5 M

Answer 287

5 mL of 0.1 M

Answer 288

10 mL of 0.02 M

Answer 289

2 x 6.02 x 10²³

Answer 290

3/2 x 6.02 x 10²³

Answer 291

4 x 6.02 x 10²³

Answer 292

6.02 x 10²³

Answer 293

1.3 x 10¯²⁰ g

Answer 294

5.01 x 10¯²¹ g

Answer 295

3.72 x 10¯²³ g

Answer 296

1.4 x 10¯²¹ g

Answer 297

Converted into wires

Answer 298

Melted easily

Answer 299

All of these

Answer 300

Converted into sheets

Answer 301

NH₃ and H⁺

Answer 302

H₂O and H⁺

Answer 303

NH₃ and BF₃

Answer 304

CH₄ and AlCl₃

Answer 305

Liquid gas chromatography

Answer 306

Ascending paper chromatography

Answer 307

Liquid solid chromatography

Answer 308

Descending paper chromatography

Answer 309

None of these

Answer 310

Na(s) → N²⁺ (g) + 2e¯

Answer 311

Na(s) → N²⁺ (g) + e¯

Answer 312

Na(g) → N²⁺ (g) + e¯

Answer 313

Na(g) → N²⁺ (g) + +¯

Answer 314

Both fcc and bcc

Answer 315

None of these

Answer 316

CaSO₄.2H₂O

Answer 317

Crystalline

Answer 318

Allotropes

Answer 319

Isoelectronic

Answer 320

8.31 L atm K¯¹ mol¯¹

Answer 321

8.31 JK¯¹ mol¯¹

Answer 322

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 323

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 324

101.325 Pa

Answer 325

8.5 Pounds

Answer 326

22.4 liter

Answer 327

2.24 liter

Answer 328

Diatic bonds

Answer 329

Ionic compounds

Answer 330

Covalent compounds

Answer 331

Metallic compounds

Answer 332

A, B and C

Answer 333

S.T.P (0°C and 1 atm)

Answer 334

273°C and 2 atm

Answer 335

0°C and 2 atm

Answer 336

127°C and 1 atm

Answer 337

Polymorphism

Answer 338

Isomorphism

Answer 339

None of these

Answer 340

11.2 liters

Answer 341

2.24 liters

Answer 342

22.4 liters

Answer 343

AB₂ type ionic compound

Answer 344

ZnS type structure

Answer 345

NaCl type structure

Answer 346

CsCl type structure

Answer 347

Tetra chloromethane

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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