Chemistry Liquids and Solids Online Mcqs Test

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Question 1

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

Question 2

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

Question 3

3. When the temperature is raised, the viscosity of the liquid decreases. This is because of

Answer

Decreased volume of the solution

Answer

Increased attraction between the molecules

Answer

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

Answer

Decreased covalent and hydrogen bond forces

Question 4

4. In case of elements the polymorphism is called

Answer

Isomorphism

Answer

Crystalline forms

Answer

Isotopic form

Question 5

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

Answer

This gives bigger size crystals

Answer

The filtrate is quick

Answer

Filtrate runs down without crystals

Answer

This gives medium size crystals

Question 6

6. The crystal structure having face centered cubic arrangement is

Question 7

7. Which one of the following pair of atoms is most likely to from an ionic bond?

Question 8

8. Mean distance between atoms in the range of

Question 9

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

Answer

Solvent extraction

Answer

Chromatography

Answer

Crystallization

Question 10

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

Question 11

11. The M.P of ice at Kelvin scale is 237K° and B.P of water is 373 K. This is a known fact that the molar volumes of different gases at S.T.P are

Answer

Much larger than the molar volumes of liquids and solids

Answer

Little bit greater than the molar volumes of liquid

Answer

Little bit less than the molar volumes of solids

Answer

About the same as the molar volumes of liquids

Question 12

12. Formation of a cation is?

Question 13

13. Repeatable entity of a crystal structure is known as

Answer

Miller indices

Question 14

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

Question 15

15. 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 16

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

Answer

C₃H₁₀O₂

Answer

C₄H₁₀O₂

Answer

C₃H₅O₂

Answer

C₆H₁₀O₄

Question 17

17. 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 18

18. Particles that most effects material properties

Answer

Valence electrons

Question 19

19. Isotopes differ in

Answer

Properties which depend upon mass

Answer

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

Answer

Arrangement of electrons in orbitals

Answer

Chemical properties

Question 20

20. Which of the following is isotropic

Question 21

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

Question 22

22. Glass is a

Answer

Super-cooled liquid

Answer

None of these

Answer

Micro-crystalline solid

Question 23

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

Question 24

24. 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 25 dm³

Answer

Volume of O₂ required is 50 dm³

Answer

Volume of CO₂ formed is 25 dm³

Question 25

25. Ice is ________ crystal

Question 26

26. 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 27

27. Half atmospheric pressure is

Answer

8.5 Pounds

Answer

101.325 Pa

Question 28

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

Question 29

29. 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 30

30. Which of the following is a pseudo solid?

Question 31

31. 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

3 liter atm

Answer

1 liter atm

Answer

2 liter atm

Question 32

32. Amorphous substances possess

Answer

Sharp melting points

Answer

No definite heat of fusion

Answer

Sharp B.P.

Answer

Definite heat of fusion

Question 33

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

Answer

Trivalent impurity

Answer

Pentavalent impurity

Answer

Divalent impurity

Answer

Tetravalent

Question 34

34. 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 evaporates more readily than C

Answer

B evaporates less readily than C

Answer

A and B evaporates at the same rate

Answer

B evaporates more readily than A

Question 35

35. 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 36

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

Answer

Polymorphism

Answer

Isomorphism

Answer

None of these

Question 37

37. ‘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 38

38. 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 39

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

Answer

Molecular solids

Answer

Pseudo solids

Answer

Ionic solids

Answer

Covalent solids

Question 40

40. The example of hexagonal system is

Question 41

41. 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

Increase two fold

Answer

Decrease twice

Answer

Be a function of the molecular mass of substance

Question 42

42. 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

Change by 33%

Answer

Is changed by about 26%

Answer

Is unchanged

Question 43

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

Answer

1 atm, and 273 K

Answer

15 tm, and 500 K

Answer

0.5 atm, and 500 K

Answer

15 atm, and 200 K

Question 44

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

Answer

Monoclinic

Answer

Rhombohedral

Answer

Isotropical

Question 45

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

Answer

Sulphuric acid

Answer

Chloroform

Answer

Acetic acid

Question 46

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

Answer

Anisotropy

Answer

Polymorphism

Answer

Isomorphism

Question 47

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

Answer

Monoclimic

Question 48

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

Answer

6.02 x 10²³

Answer

4 x 6.02 x 10²³

Answer

2 x 6.02 x 10²³

Answer

3/2 x 6.02 x 10²³

Question 49

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

Answer

There is no orderly arrangement of particles

Answer

There are rigid and in-compressible

Answer

They melt over a range of temperature

Answer

They are anisotropic

Question 50

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

Answer

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

Answer

At high pressure, the intermolecular attraction becomes significant

Answer

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

Answer

A high pressure, the volume of the gas becomes insignificant

Question 51

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

Answer

4.0956 x 10 ²⁴

Answer

3.0115 x 10 ²⁴

Answer

2.0478 x 10 ²⁴

Answer

1.5057 x 10 ²⁴

Question 52

52. Which of the following contain maximum number of atoms?

Answer

20 moles of S8

Answer

5.0 moles of SO₂

Answer

6 moles of S

Answer

44.8 dm3 CO₂ at S.T.P

Question 53

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

Question 54

54. Amorphous substance posses

Answer

All of these

Answer

No definite heat of fusion

Answer

No sharp melting points

Answer

No definite geometry

Question 55

55. Triple point of water is

Question 56

56. Which is trigonal crystal?

Answer

CaSO₄.2H₂O

Question 57

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

Answer

None of these

Question 58

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

Answer

100 mm of Hg

Answer

700 mm of Hg

Answer

790 mm of Hg

Answer

1489 mm of Hg

Question 59

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

Answer

Na(g) → N²⁺ (g) + e¯

Answer

Na(g) → N²⁺ (g) + +¯

Answer

Na(s) → N²⁺ (g) + e¯

Answer

Na(s) → N²⁺ (g) + 2e¯

Question 60

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

Question 61

61. Isomorphic substance have

Answer

Same physical and chemical properties

Answer

Same physical and difference chemical properties

Answer

Different physical and chemical properties

Answer

Different physical and same chemical properties

Question 62

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

Answer

Moderately

Question 63

63. Crystals can be classified into

Answer

4 crystal systems

Answer

14 crystal systems

Answer

7 crystal systems

Answer

3 crystal systems

Question 64

64. A compound formed by elements X and Y crystallizes in a cubic structure in which the X atoms are at the corners of a cube and the Y atoms are at the face-centered. The formula of the compound is

Answer 128

All molecular collisions are elastic

Answer 129

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

Answer 130

Molecules are in chaotic motion

Answer 131

Molecules of all the gases have same size and same mass

Answer 132

A, B and C

Answer 133

Isoelectronic

Answer 134

Allotropes

Answer 135

Sharp melting point

Answer 136

Definite geometry

Answer 137

Transition temperature

Answer 138

Liquid gas chromatography

Answer 139

Descending paper chromatography

Answer 140

Liquid solid chromatography

Answer 141

Ascending paper chromatography

Answer 142

Boyle’s law

Answer 143

Dalton’s law

Answer 144

Charles’ law

Answer 145

Avogadro’s law

Answer 146

nλ = 2 θ sin θ

Answer 147

2nλ = d sin θ

Answer 148

nλ = 2 d sin θ

Answer 149

nλ = 1/2d sin θ

Answer 150

Gas < liquid < solid

Answer 151

Gas < liquid < solid

Answer 152

Liquid < gas < solid

Answer 153

Gas = liquid = solid

Answer 154

Tetra chloromethane

Answer 155

Fluted filter paper

Answer 156

Normal filter paper

Answer 157

Both A & B

Answer 158

Gets a double negative charge

Answer 159

Gets a double positive charge

Answer 160

Gets a single negative charge

Answer 161

Gets a single positive charge

Answer 162

Liquid crystals

Answer 163

Solid crystals

Answer 164

Ionic crystals

Answer 165

None of these

Answer 166

None of these

Answer 167

Both fcc and bcc

Answer 168

Causing pressure

Answer 169

Orderly arranged

Answer 170

Randomly moving

Answer 171

Having wide spaces

Answer 172

2.24 liter

Answer 173

22.4 liter

Answer 174

Both b and c

Answer 175

Low temperature

Answer 176

High temperature

Answer 177

High pressure

Answer 178

The carbon atoms are arranged layers

Answer 179

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

Answer 180

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

Answer 181

The coordination number of carbon atoms is 4

Answer 182

Half that in 8 g of He

Answer 183

Twice that in 60 g carbon

Answer 184

6.022 x 10²²

Answer 185

558.5 x 6.022 x 10²³

Answer 186

Ortho rhombic lattice

Answer 187

Cubic lattice

Answer 188

Orthogonal lattice

Answer 189

ZnS type structure

Answer 190

NaCl type structure

Answer 191

AB₂ type ionic compound

Answer 192

CsCl type structure

Answer 193

Repeated extraction and small portion of solvent

Answer 194

Single extraction and small portion of solvent

Answer 195

Repeated extraction and large portion of solvent

Answer 196

Single extraction and large portion of solvent

Answer 197

Diatic bonds

Answer 198

Metallic compounds

Answer 199

Ionic compounds

Answer 200

Covalent compounds

Answer 201

Pressure of dust particles in air

Answer 202

Different molar mass

Answer 203

Elastic collisions of gas molecules

Answer 204

Non-polar nature of gases

Answer 205

Converted into sheets

Answer 206

Melted easily

Answer 207

All of these

Answer 208

Converted into wires

Answer 209

Covalent bonds

Answer 210

Ionic compounds

Answer 211

Diatic bond

Answer 212

Metallic bonds

Answer 213

Tetrahedral manner

Answer 214

Square planner manner

Answer 215

Hexagonal manner

Answer 216

Altahydral manner

Answer 217

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

Answer 218

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

Answer 219

None of these

Answer 220

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

Answer 221

Free valence electrons

Answer 222

Ione pair of electrons

Answer 223

Dalton’s law

Answer 224

Graham’s law

Answer 225

Boyle’s law

Answer 226

Charles’ law

Answer 227

1.4 x 10¯²¹ g

Answer 228

1.3 x 10¯²⁰ g

Answer 229

3.72 x 10¯²³ g

Answer 230

5.01 x 10¯²¹ g

Answer 231

CO₂ is 1.25 times faster than CO

Answer 232

Both diffused at the same time

Answer 233

CO is 1.25 times faster than CO₂

Answer 234

CO is 3.75 times faster than CO₂

Answer 235

Same physical and different chemical properties

Answer 236

Same physical and chemical properties

Answer 237

Different physical and chemical properties

Answer 238

Different physical and same chemical properties

Answer 239

Octahedron

Answer 240

Tetrahedron

Answer 241

100°C and 2.0 atm

Answer 242

-10°C and 5.0 atm

Answer 243

0°C and 2.0 atm

Answer 244

-10°C and 2.0 atm

Answer 245

One mole of NH₃ will produce 6 moles of N₂

Answer 246

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

Answer 247

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

Answer 248

One mole of NH₃ will produce ½ mole of N₂

Answer 249

Isomeric crystals

Answer 250

Liquid Crystals

Answer 251

Isomorphous crystals

Answer 252

Allotropic crystal

Answer 253

Transition elements

Answer 254

Lanthanides

Answer 255

p-block elements

Answer 256

3 x 10²³ atoms of C

Answer 257

1 mole of S

Answer 258

2 gram atom of nitrogen

Answer 259

7.0 g of Ag.

Answer 260

Can possess small regions of orderly arrangement of atoms

Answer 261

Have sharp melting point

Answer 262

Undergo clean cleave when cut with knife

Answer 263

Have perfect arrangement of atoms

Answer 264

None of these

Answer 265

Liquid CO₂

Answer 266

Liquid O₂

Answer 267

Liquid N₂

Answer 268

Liquid H₂

Answer 269

Sublimation

Answer 270

Condensation

Answer 271

Filtration

Answer 272

Vaporization

Answer 273

273°C and 2 atm

Answer 274

S.T.P (0°C and 1 atm)

Answer 275

0°C and 2 atm

Answer 276

127°C and 1 atm

Answer 277

Hg Be₂Ca₂Cu₂O₈

Answer 278

Yb Ba₂Cu₂O₈

Answer 279

Y B₂Cu₃O₇

Answer 280

Y Ba₂Cu₃O₇

Answer 281

High vapour pressures

Answer 282

Low melting points

Answer 283

Good conductivity in solid state

Answer 284

Solubility in polar solvents

Answer 285

To avoid premature crystallization of the solute

Answer 286

Filtering the hot saturated solution

Answer 287

Increasing the rate of filtration

Answer 288

To dissolve large amount of substance at its boiling point

Answer 289

Polymorphism

Answer 290

Anisotropy

Answer 291

Isomorphism

Answer 292

Tetragonal

Answer 293

Monoclinic

Answer 294

Relative abundance

Answer 295

Number of isotopes

Answer 296

The gas is chlorine

Answer 297

A gas is liberated

Answer 298

Colour of the gas is greenish yellow

Answer 299

Oxide of the gas is strongly acidic

Answer 300

He will feel warmth

Answer 301

His blood pressure will increase

Answer 302

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

Answer 303

He will feel cool

Answer 304

None of these

Answer 305

Inorganic compounds

Answer 306

Both A and B

Answer 307

Organic compounds

Answer 308

10 mL of 0.02 M

Answer 309

10 mL of 0.5 M

Answer 310

5 mL of 0.1 M

Answer 311

10 mL of 0.1 M

Answer 312

All of these

Answer 313

Transition temperature

Answer 314

Definite geometry

Answer 315

Polar compounds

Answer 316

All types of atoms and molecules

Answer 317

159 mm Hg.

Answer 318

159 g/Cm²

Answer 319

8.31 L atm K¯¹ mol¯¹

Answer 320

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 321

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 322

8.31 JK¯¹ mol¯¹

Answer 323

Electrostatic force

Answer 324

Non covalent bond force

Answer 325

Electrical attraction

Answer 326

Covalent bond

Answer 327

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

Answer 328

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

Answer 329

Gases do not have a definite shape and volume

Answer 330

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

Answer 331

Low temperature

Answer 332

High solubility

Answer 333

High ignition temperature

Answer 334

High concentration

Answer 335

Increase of K.E of molecules

Answer 336

Increase of intermolecular interactions

Answer 337

Decrease of surface tension

Answer 338

Increase in potential energy of molecules

Answer 339

Crystalline

Answer 340

Add dilute acid to the mixture and filter

Answer 341

Heat the mixture and allow it to cool

Answer 342

Place the mixture in a separating funnel

Answer 343

Add water to the mixture and filter

Answer 344

NH₃ and H⁺

Answer 345

CH₄ and AlCl₃

Answer 346

H₂O and H⁺

Answer 347

NH₃ and BF₃

Total Questions:	150
Time Allowed:	60 Minutes
Total Marks:	150
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