Chemistry Liquids and Solids Online Mcqs Test

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Question 1

1. 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 2

2. Simple molecules or giant macromolecules are examples of

Answer

Diatic bond

Answer

Ionic compounds

Answer

Metallic bonds

Answer

Covalent bonds

Question 3

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

Question 4

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

Question 5

5. Ionic solids are characterized by

Answer

Solubility in polar solvents

Answer

Low melting points

Answer

Good conductivity in solid state

Answer

High vapour pressures

Question 6

6. Bragg’s law is given by equation

Answer

nλ = 2 d sin θ

Answer

nλ = 1/2d sin θ

Answer

2nλ = d sin θ

Answer

nλ = 2 θ sin θ

Question 7

7. Potassium crystallizes with a

Answer

Cubic lattice

Answer

Ortho rhombic lattice

Answer

Orthogonal lattice

Question 8

8. 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 9

9. Ice is ________ crystal

Question 10

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

Question 11

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

Answer

Sublimation

Answer

Vaporization

Answer

Condensation

Answer

Filtration

Question 12

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

Answer

None of these

Question 13

13. Which of the following is isotropic

Question 14

14. 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

Change by 33%

Answer

Is unchanged

Question 15

15. The most efficient solvent extraction method is by using

Answer

Repeated extraction and large portion of solvent

Answer

Repeated extraction and small portion of solvent

Answer

Single extraction and large portion of solvent

Answer

Single extraction and small portion of solvent

Question 16

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

Question 17

17. 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

He will feel warmth

Answer

He will feel cool

Answer

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

Answer

His blood pressure will increase

Question 18

18. Under what conditions real gases deviate from ideal behavior

Answer

High pressure

Answer

High temperature

Answer

Low temperature

Answer

Both b and c

Question 19

19. The mass of one mole of electron is

Question 20

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

Question 21

21. A solution of 10 mL of M/10 FeSO₄ was titrated with KMnO₄ solution in acidic medium, the amount of KMnO₄ used will be

Answer

10 mL of 0.02 M

Answer

10 mL of 0.5 M

Answer

10 mL of 0.1 M

Answer

5 mL of 0.1 M

Question 22

22. Which of the following substances is not amorphous?

Question 23

23. The ratio of most probable velocity to that of average velocity is

Question 24

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

Answer

Moderately

Question 25

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

Question 26

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

Answer

Polymorphism

Answer

Anisotropy

Answer

Isomorphism

Question 27

27. The example of hexagonal system is

Question 28

28. Crystal can be classified in to _______ basic crystal habits

Question 29

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

Answer

Rhombohedral

Answer

Isotropical

Answer

Monoclinic

Question 30

30. 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

1489 mm of Hg

Answer

790 mm of Hg

Question 31

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

Question 32

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

Question 33

33. 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 34

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

Answer

Tetragonal

Answer

Monoclinic

Question 35

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

Answer

Relative abundance

Answer

Number of isotopes

Question 36

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

Answer

Isomorphism

Answer

Polymorphism

Answer

None of these

Question 37

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

Question 38

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

Question 39

39. Amorphous solids

Answer

Can possess small regions of orderly arrangement of atoms

Answer

Have perfect arrangement of atoms

Answer

Have sharp melting point

Answer

Undergo clean cleave when cut with knife

Question 40

40. Glass is a

Answer

None of these

Answer

Super-cooled liquid

Answer

Micro-crystalline solid

Question 41

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

Question 42

42. Formation of a cation is?

Question 43

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

Question 44

44. 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 45

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

Answer

None of these

Answer

Both fcc and bcc

Question 46

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

Answer

Na(g) → N²⁺ (g) + +¯

Answer

Na(g) → N²⁺ (g) + e¯

Answer

Na(s) → N²⁺ (g) + 2e¯

Answer

Na(s) → N²⁺ (g) + e¯

Question 47

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

Answer

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

Answer

Molecules are in chaotic motion

Answer

All molecular collisions are elastic

Answer

Molecules of all the gases have same size and same mass

Question 48

48. In NaCl type structure, the coordination numbers of cation and anions are

Question 49

49. 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

Decrease twice

Answer

Remains unchanged

Answer

Be a function of the molecular mass of substance

Question 50

50. ‘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 51

51. Isomorphic substances have

Answer

Different physical and chemical properties

Answer

Different physical and same chemical properties

Answer

Same physical and different chemical properties

Answer

Same physical and chemical properties

Question 52

52. 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 mole of NH₃ 20g of O₂ are required

Answer

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

Question 53

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

Answer

159 g/Cm²

Answer

159 mm Hg.

Question 54

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

Answer

3.72 x 10¯²³ g

Answer

1.3 x 10¯²⁰ g

Answer

5.01 x 10¯²¹ g

Answer

1.4 x 10¯²¹ g

Question 55

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

Answer

Filtrate runs down without crystals

Answer

The filtrate is quick

Answer

This gives bigger size crystals

Answer

This gives medium size crystals

Question 56

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

Question 57

57. Which solids are called true solids?

Answer

Crystalline

Question 58

58. 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

Little bit less than the molar volumes of solids

Answer

Little bit greater than the molar volumes of liquid

Answer

About the same as the molar volumes of liquids

Answer

Much larger than the molar volumes of liquids and solids

Question 59

59. 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 60

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

Answer

3.0115 x 10 ²⁴

Answer

4.0956 x 10 ²⁴

Answer

1.5057 x 10 ²⁴

Answer

2.0478 x 10 ²⁴

Question 61

61. Crystals can be classified into

Answer

4 crystal systems

Answer

14 crystal systems

Answer

7 crystal systems

Answer

3 crystal systems

Question 62

62. 50dm³ of CO is burnt completely according to reaction 2CO + O₂ – 2CO₂ Choose the correct statement

Answer

Volume of O₂ required is 25 dm³

Answer

Volume of CO₂ formed is 60 dm³

Answer

Volume of CO₂ formed is 25 dm³

Answer

Volume of O₂ required is 50 dm³

Question 63

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

Question 64

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

Answer

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer

8.31 L atm K¯¹ mol¯¹

Answer

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer

8.31 JK¯¹ mol¯¹

Answer 125

Sharp B.P.

Answer 126

No definite heat of fusion

Answer 127

Definite heat of fusion

Answer 128

Sharp melting points

Answer 129

A and C have same reading and are less then B

Answer 130

15 atm, and 200 K

Answer 131

15 tm, and 500 K

Answer 132

0.5 atm, and 500 K

Answer 133

1 atm, and 273 K

Answer 134

44.8 dm3 CO₂ at S.T.P

Answer 135

5.0 moles of SO₂

Answer 136

6 moles of S

Answer 137

20 moles of S8

Answer 138

Charles’ law

Answer 139

Boyle’s law

Answer 140

Graham’s law

Answer 141

Dalton’s law

Answer 142

Avogadro’s law

Answer 143

Dalton’s law

Answer 144

Charles’ law

Answer 145

Boyle’s law

Answer 146

Elastic collisions of gas molecules

Answer 147

Different molar mass

Answer 148

Non-polar nature of gases

Answer 149

Pressure of dust particles in air

Answer 150

Metallic compounds

Answer 151

Ionic compounds

Answer 152

Covalent compounds

Answer 153

Diatic bonds

Answer 154

Isoelectronic

Answer 155

Allotropes

Answer 156

Isomorphism

Answer 157

Isotopic form

Answer 158

Crystalline forms

Answer 159

Valence electrons

Answer 160

Definite geometry

Answer 161

All of these

Answer 162

Transition temperature

Answer 163

Half that in 8 g of He

Answer 164

6.022 x 10²²

Answer 165

Twice that in 60 g carbon

Answer 166

558.5 x 6.022 x 10²³

Answer 167

Electrical attraction

Answer 168

Electrostatic force

Answer 169

Covalent bond

Answer 170

Non covalent bond force

Answer 171

Sulphuric acid

Answer 172

Chloroform

Answer 173

Acetic acid

Answer 174

To avoid premature crystallization of the solute

Answer 175

To dissolve large amount of substance at its boiling point

Answer 176

Filtering the hot saturated solution

Answer 177

Increasing the rate of filtration

Answer 178

CsCl type structure

Answer 179

AB₂ type ionic compound

Answer 180

ZnS type structure

Answer 181

NaCl type structure

Answer 182

Gas < liquid < solid

Answer 183

Liquid < gas < solid

Answer 184

Gas = liquid = solid

Answer 185

Gas < liquid < solid

Answer 186

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

Answer 187

The coordination number of carbon atoms is 4

Answer 188

The carbon atoms are arranged layers

Answer 189

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

Answer 190

6.02 x 10²³

Answer 191

4 x 6.02 x 10²³

Answer 192

3/2 x 6.02 x 10²³

Answer 193

2 x 6.02 x 10²³

Answer 194

None of these

Answer 195

S.T.P (0°C and 1 atm)

Answer 196

127°C and 1 atm

Answer 197

273°C and 2 atm

Answer 198

0°C and 2 atm

Answer 199

Crystallization

Answer 200

Solvent extraction

Answer 201

Chromatography

Answer 202

Definite geometry

Answer 203

Sharp melting point

Answer 204

Transition temperature

Answer 205

Liquid CO₂

Answer 206

Liquid O₂

Answer 207

Liquid N₂

Answer 208

Liquid H₂

Answer 209

Having wide spaces

Answer 210

Orderly arranged

Answer 211

Randomly moving

Answer 212

Causing pressure

Answer 213

No sharp melting points

Answer 214

All of these

Answer 215

No definite geometry

Answer 216

No definite heat of fusion

Answer 217

CO₂ is 1.25 times faster than CO

Answer 218

CO is 1.25 times faster than CO₂

Answer 219

CO is 3.75 times faster than CO₂

Answer 220

Both diffused at the same time

Answer 221

High ignition temperature

Answer 222

Low temperature

Answer 223

High solubility

Answer 224

High concentration

Answer 225

Divalent impurity

Answer 226

Pentavalent impurity

Answer 227

Tetravalent

Answer 228

Trivalent impurity

Answer 229

A, B and C

Answer 230

Lanthanides

Answer 231

p-block elements

Answer 232

Transition elements

Answer 233

Tetra chloromethane

Answer 234

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

Answer 235

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

Answer 236

None of these

Answer 237

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

Answer 238

There are rigid and in-compressible

Answer 239

There is no orderly arrangement of particles

Answer 240

They melt over a range of temperature

Answer 241

They are anisotropic

Answer 242

22.4 liter

Answer 243

2.24 liter

Answer 244

101.325 Pa

Answer 245

8.5 Pounds

Answer 246

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

Answer 247

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

Answer 248

Gases do not have a definite shape and volume

Answer 249

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

Answer 250

C₆H₁₀O₄

Answer 251

C₃H₅O₂

Answer 252

C₄H₁₀O₂

Answer 253

C₃H₁₀O₂

Answer 254

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

Answer 255

Decreased volume of the solution

Answer 256

Decreased covalent and hydrogen bond forces

Answer 257

Increased attraction between the molecules

Answer 258

Normal filter paper

Answer 259

Both A & B

Answer 260

Fluted filter paper

Answer 261

Liquid crystals

Answer 262

Ionic crystals

Answer 263

None of these

Answer 264

Solid crystals

Answer 265

1 mole of S

Answer 266

2 gram atom of nitrogen

Answer 267

7.0 g of Ag.

Answer 268

3 x 10²³ atoms of C

Answer 269

Miller indices

Answer 270

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

Answer 271

Arrangement of electrons in orbitals

Answer 272

Properties which depend upon mass

Answer 273

Chemical properties

Answer 274

Liquid gas chromatography

Answer 275

Liquid solid chromatography

Answer 276

Descending paper chromatography

Answer 277

Ascending paper chromatography

Answer 278

Square planner manner

Answer 279

Hexagonal manner

Answer 280

Tetrahedral manner

Answer 281

Altahydral manner

Answer 282

0°C and 2.0 atm

Answer 283

100°C and 2.0 atm

Answer 284

-10°C and 2.0 atm

Answer 285

-10°C and 5.0 atm

Answer 286

Ione pair of electrons

Answer 287

Free valence electrons

Answer 288

2 liter atm

Answer 289

1 liter atm

Answer 290

3 liter atm

Answer 291

Different physical and same chemical properties

Answer 292

Same physical and chemical properties

Answer 293

Different physical and chemical properties

Answer 294

Same physical and difference chemical properties

Answer 295

H₂O and H⁺

Answer 296

NH₃ and BF₃

Answer 297

CH₄ and AlCl₃

Answer 298

NH₃ and H⁺

Answer 299

B evaporates less readily than C

Answer 300

B evaporates more readily than A

Answer 301

A and B evaporates at the same rate

Answer 302

A evaporates more readily than C

Answer 303

Ionic solids

Answer 304

Molecular solids

Answer 305

Pseudo solids

Answer 306

Covalent solids

Answer 307

CaSO₄.2H₂O

Answer 308

Monoclimic

Answer 309

None of these

Answer 310

Organic compounds

Answer 311

Both A and B

Answer 312

Inorganic compounds

Answer 313

Colour of the gas is greenish yellow

Answer 314

A gas is liberated

Answer 315

The gas is chlorine

Answer 316

Oxide of the gas is strongly acidic

Answer 317

Y Ba₂Cu₃O₇

Answer 318

Hg Be₂Ca₂Cu₂O₈

Answer 319

Y B₂Cu₃O₇

Answer 320

Yb Ba₂Cu₂O₈

Answer 321

Place the mixture in a separating funnel

Answer 322

Heat the mixture and allow it to cool

Answer 323

Add dilute acid to the mixture and filter

Answer 324

Add water to the mixture and filter

Answer 325

All types of atoms and molecules

Answer 326

Polar compounds

Answer 327

Gets a double negative charge

Answer 328

Gets a double positive charge

Answer 329

Gets a single negative charge

Answer 330

Gets a single positive charge

Answer 331

At high pressure, the intermolecular attraction becomes significant

Answer 332

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

Answer 333

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

Answer 334

A high pressure, the volume of the gas becomes insignificant

Answer 335

Octahedron

Answer 336

Tetrahedron

Answer 337

Increase in potential energy of molecules

Answer 338

Decrease of surface tension

Answer 339

Increase of K.E of molecules

Answer 340

Increase of intermolecular interactions

Answer 341

All of these

Answer 342

Melted easily

Answer 343

Converted into wires

Answer 344

Converted into sheets

Answer 345

Isomorphism

Answer 346

Anisotropy

Answer 347

Polymorphism

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