Chemistry Liquids and Solids Online Mcqs Test

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Question 1

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

Answer

Pseudo solids

Answer

Covalent solids

Answer

Molecular solids

Answer

Ionic solids

Question 2

2. Under what conditions real gases deviate from ideal behavior

Answer

High pressure

Answer

Low temperature

Answer

Both b and c

Answer

High temperature

Question 3

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

Answer

The gas is chlorine

Answer

A gas is liberated

Answer

Colour of the gas is greenish yellow

Answer

Oxide of the gas is strongly acidic

Question 4

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

Question 5

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

Question 6

6. Van der Waal’s forces exist in

Answer

Polar compounds

Answer

All types of atoms and molecules

Question 7

7. Super conductors are derived from compounds of

Answer

Transition elements

Answer

p-block elements

Answer

Lanthanides

Question 8

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

Answer

Place the mixture in a separating funnel

Answer

Heat the mixture and allow it to cool

Answer

Add water to the mixture and filter

Answer

Add dilute acid to the mixture and filter

Question 9

9. Which forms metallic crystals?

Question 10

10. Solvent extraction is mostly applied to separate

Answer

Inorganic compounds

Answer

Both A and B

Answer

None of these

Answer

Organic compounds

Question 11

11. Simple molecules or giant macromolecules are examples of

Answer

Diatic bond

Answer

Ionic compounds

Answer

Metallic bonds

Answer

Covalent bonds

Question 12

12. The molar volume of CO₂ is maximum at

Answer

273°C and 2 atm

Answer

S.T.P (0°C and 1 atm)

Answer

0°C and 2 atm

Answer

127°C and 1 atm

Question 13

13. Which of the following substances is not amorphous?

Question 14

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

Answer

100°C and 2.0 atm

Answer

0°C and 2.0 atm

Answer

-10°C and 5.0 atm

Answer

-10°C and 2.0 atm

Question 15

15. 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 CO₂ formed is 25 dm³

Answer

Volume of O₂ required is 50 dm³

Answer

Volume of O₂ required is 25 dm³

Question 16

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

Question 17

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

Question 18

18. 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 19

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

Question 20

20. Particles that most effects material properties

Answer

Valence electrons

Question 21

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

Answer

Sulphuric acid

Answer

Acetic acid

Answer

Chloroform

Question 22

22. The most efficient solvent extraction method is by using

Answer

Repeated extraction and large portion of solvent

Answer

Single extraction and small portion of solvent

Answer

Repeated extraction and small portion of solvent

Answer

Single extraction and large portion of solvent

Question 23

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

Answer

CsCl type structure

Answer

AB₂ type ionic compound

Answer

ZnS type structure

Answer

NaCl type structure

Question 24

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

Answer

Low temperature

Answer

High concentration

Answer

High ignition temperature

Answer

High solubility

Question 25

25. 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

Remains unchanged

Answer

Decrease twice

Answer

Increase two fold

Answer

Be a function of the molecular mass of substance

Question 26

26. 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

None of these

Answer

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

Answer

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

Question 27

27. Ice is ________ crystal

Question 28

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

Question 29

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

Answer

Anisotropy

Answer

Isomorphism

Answer

Polymorphism

Question 30

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

Answer

Polymorphism

Answer

Isomorphism

Answer

Anisotropy

Question 31

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

Question 32

32. 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 33

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

Question 34

34. 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

6.022 x 10²²

Answer

Half that in 8 g of He

Question 35

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

Answer

One mole of NH₃ will produce ½ mole of N₂

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

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

Question 36

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

Answer

Ione pair of electrons

Answer

Free valence electrons

Question 37

37. A solid may be made up of

Answer

A, B and C

Question 38

38. Formation of a cation is?

Question 39

39. Crystalline solids can be identified easily from their

Answer

Definite geometry

Answer

Sharp melting point

Answer

Transition temperature

Question 40

40. Isotopes differ in

Answer

Properties which depend upon mass

Answer

Chemical properties

Answer

Arrangement of electrons in orbitals

Answer

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

Question 41

41. Which is distilled first?

Answer

Liquid N₂

Answer

Liquid O₂

Answer

Liquid H₂

Answer

Liquid CO₂

Question 42

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

Answer

Tetravalent

Answer

Divalent impurity

Answer

Pentavalent impurity

Answer

Trivalent impurity

Question 43

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

Answer

Fluted filter paper

Answer

Both A & B

Answer

Normal filter paper

Question 44

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

Answer

Boyle’s law

Answer

Dalton’s law

Answer

Charles’ law

Answer

Graham’s law

Question 45

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

Question 46

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

Answer

Filtration

Answer

Sublimation

Answer

Condensation

Answer

Vaporization

Question 47

47. 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 48

48. Which of the following is isotropic

Question 49

49. A malleable solid is one which can be

Answer

All of these

Answer

Melted easily

Answer

Converted into sheets

Answer

Converted into wires

Question 50

50. Which of the following has least mass?

Answer

3 x 10²³ atoms of C

Answer

1 mole of S

Answer

2 gram atom of nitrogen

Answer

7.0 g of Ag.

Question 51

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

Answer

None of these

Answer

Both fcc and bcc

Question 52

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

Answer

159 mm Hg.

Answer

159 g/Cm²

Question 53

53. The crystal structure having face centered cubic arrangement is

Question 54

54. The beaker contains slurry of ice and water, the three thermometers Fahrenheit, Kelvin and centigrade placed in it. The thermometers are represented as A, B and C respectively. On which thermometer the lowest reading will be?

Answer

A and C have same reading and are less then B

Question 55

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

Answer

Gets a double positive charge

Answer

Gets a double negative charge

Answer

Gets a single negative charge

Answer

Gets a single positive charge

Question 56

56. Which of the following are more temperature sensitive?

Answer

None of these

Answer

Ionic crystals

Answer

Liquid crystals

Answer

Solid crystals

Question 57

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

Question 58

58. Correct order of intermolecular forces

Answer

Gas < liquid < solid

Answer

Gas < liquid < solid

Answer

Gas = liquid = solid

Answer

Liquid < gas < solid

Question 59

59. The mass of one mole of electron is

Question 60

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

Answer

Monoclimic

Question 61

61. Poor conductors of electricity is a characteristic of

Answer

Ionic compounds

Answer

Covalent compounds

Answer

Diatic bonds

Answer

Metallic compounds

Question 62

62. 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 63

63. Ionic solids are characterized by

Answer

Good conductivity in solid state

Answer

High vapour pressures

Answer

Solubility in polar solvents

Answer

Low melting points

Question 64

64. 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 changed by about 26%

Answer

Is unchanged

Answer

Change by 33%

Answer 158

Orderly arranged

Answer 159

Having wide spaces

Answer 160

Causing pressure

Answer 161

Randomly moving

Answer 162

Different physical and chemical properties

Answer 163

Same physical and chemical properties

Answer 164

Same physical and different chemical properties

Answer 165

Different physical and same chemical properties

Answer 166

Crystalline

Answer 167

Decrease of surface tension

Answer 168

Increase in potential energy of molecules

Answer 169

Increase of K.E of molecules

Answer 170

Increase of intermolecular interactions

Answer 171

The filtrate is quick

Answer 172

This gives medium size crystals

Answer 173

This gives bigger size crystals

Answer 174

Filtrate runs down without crystals

Answer 175

Moderately

Answer 176

Orthogonal lattice

Answer 177

Cubic lattice

Answer 178

Ortho rhombic lattice

Answer 179

None of these

Answer 180

Polymorphism

Answer 181

Isomorphism

Answer 182

To avoid premature crystallization of the solute

Answer 183

Increasing the rate of filtration

Answer 184

Filtering the hot saturated solution

Answer 185

To dissolve large amount of substance at its boiling point

Answer 186

Descending paper chromatography

Answer 187

Ascending paper chromatography

Answer 188

Liquid solid chromatography

Answer 189

Liquid gas chromatography

Answer 190

Much larger than the molar volumes of liquids and solids

Answer 191

Little bit greater than the molar volumes of liquid

Answer 192

About the same as the molar volumes of liquids

Answer 193

Little bit less than the molar volumes of solids

Answer 194

No definite heat of fusion

Answer 195

Sharp melting points

Answer 196

Sharp B.P.

Answer 197

Definite heat of fusion

Answer 198

Tetrahedral manner

Answer 199

Square planner manner

Answer 200

Altahydral manner

Answer 201

Hexagonal manner

Answer 202

3/2 x 6.02 x 10²³

Answer 203

4 x 6.02 x 10²³

Answer 204

6.02 x 10²³

Answer 205

2 x 6.02 x 10²³

Answer 206

Avogadro’s law

Answer 207

Dalton’s law

Answer 208

Charles’ law

Answer 209

Boyle’s law

Answer 210

100 mm of Hg

Answer 211

700 mm of Hg

Answer 212

1489 mm of Hg

Answer 213

790 mm of Hg

Answer 214

Y Ba₂Cu₃O₇

Answer 215

Hg Be₂Ca₂Cu₂O₈

Answer 216

Yb Ba₂Cu₂O₈

Answer 217

Y B₂Cu₃O₇

Answer 218

All of these

Answer 219

Transition temperature

Answer 220

Definite geometry

Answer 221

Elastic collisions of gas molecules

Answer 222

Non-polar nature of gases

Answer 223

Different molar mass

Answer 224

Pressure of dust particles in air

Answer 225

His blood pressure will increase

Answer 226

He will feel cool

Answer 227

He will feel warmth

Answer 228

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

Answer 229

Isotopic form

Answer 230

Crystalline forms

Answer 231

Isomorphism

Answer 232

3 liter atm

Answer 233

1 liter atm

Answer 234

2 liter atm

Answer 235

11.2 liters

Answer 236

2.24 liters

Answer 237

22.4 liters

Answer 238

10 mL of 0.1 M

Answer 239

10 mL of 0.5 M

Answer 240

5 mL of 0.1 M

Answer 241

10 mL of 0.02 M

Answer 242

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 243

8.31 L atm K¯¹ mol¯¹

Answer 244

8.31 JK¯¹ mol¯¹

Answer 245

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 246

C₃H₁₀O₂

Answer 247

C₃H₅O₂

Answer 248

C₆H₁₀O₄

Answer 249

C₄H₁₀O₂

Answer 250

H₂O and H⁺

Answer 251

NH₃ and H⁺

Answer 252

CH₄ and AlCl₃

Answer 253

NH₃ and BF₃

Answer 254

44.8 dm3 CO₂ at S.T.P

Answer 255

20 moles of S8

Answer 256

5.0 moles of SO₂

Answer 257

6 moles of S

Answer 258

None of these

Answer 259

Octahedron

Answer 260

Tetrahedron

Answer 261

Miller indices

Answer 262

3.0115 x 10 ²⁴

Answer 263

4.0956 x 10 ²⁴

Answer 264

2.0478 x 10 ²⁴

Answer 265

1.5057 x 10 ²⁴

Answer 266

Can possess small regions of orderly arrangement of atoms

Answer 267

Undergo clean cleave when cut with knife

Answer 268

Have sharp melting point

Answer 269

Have perfect arrangement of atoms

Answer 270

Chromatography

Answer 271

Solvent extraction

Answer 272

Crystallization

Answer 273

Electrostatic force

Answer 274

Covalent bond

Answer 275

Non covalent bond force

Answer 276

Electrical attraction

Answer 277

No sharp melting points

Answer 278

No definite heat of fusion

Answer 279

All of these

Answer 280

No definite geometry

Answer 281

Relative abundance

Answer 282

Number of isotopes

Answer 283

Isomorphous crystals

Answer 284

Liquid Crystals

Answer 285

Allotropic crystal

Answer 286

Isomeric crystals

Answer 287

101.325 Pa

Answer 288

8.5 Pounds

Answer 289

22.4 liter

Answer 290

2.24 liter

Answer 291

There are rigid and in-compressible

Answer 292

They melt over a range of temperature

Answer 293

There is no orderly arrangement of particles

Answer 294

They are anisotropic

Answer 295

1 atm, and 273 K

Answer 296

15 tm, and 500 K

Answer 297

0.5 atm, and 500 K

Answer 298

15 atm, and 200 K

Answer 299

All molecular collisions are elastic

Answer 300

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

Answer 301

Molecules of all the gases have same size and same mass

Answer 302

Molecules are in chaotic motion

Answer 303

Same physical and chemical properties

Answer 304

Different physical and chemical properties

Answer 305

Same physical and difference chemical properties

Answer 306

Different physical and same chemical properties

Answer 307

nλ = 2 d sin θ

Answer 308

2nλ = d sin θ

Answer 309

nλ = 2 θ sin θ

Answer 310

nλ = 1/2d sin θ

Answer 311

Decreased volume of the solution

Answer 312

Decreased covalent and hydrogen bond forces

Answer 313

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

Answer 314

Increased attraction between the molecules

Answer 315

Tetra chloromethane

Answer 316

7 crystal systems

Answer 317

14 crystal systems

Answer 318

3 crystal systems

Answer 319

4 crystal systems

Answer 320

A and B evaporates at the same rate

Answer 321

B evaporates more readily than A

Answer 322

A evaporates more readily than C

Answer 323

B evaporates less readily than C

Answer 324

1.3 x 10¯²⁰ g

Answer 325

3.72 x 10¯²³ g

Answer 326

5.01 x 10¯²¹ g

Answer 327

1.4 x 10¯²¹ g

Answer 328

Gases do not have a definite shape and volume

Answer 329

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

Answer 330

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

Answer 331

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

Answer 332

Rhombohedral

Answer 333

Monoclinic

Answer 334

Isotropical

Answer 335

Micro-crystalline solid

Answer 336

None of these

Answer 337

Super-cooled liquid

Answer 338

CaSO₄.2H₂O

Answer 339

The coordination number of carbon atoms is 4

Answer 340

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

Answer 341

The carbon atoms are arranged layers

Answer 342

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

Answer 343

Isoelectronic

Answer 344

Allotropes

Answer 345

Tetragonal

Answer 346

Monoclinic

Answer 347

None of these

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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