Chemistry Liquids and Solids Online Mcqs Test

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Question 1

1. 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 2

2. ‘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 3

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

Answer

5.0 moles of SO₂

Answer

20 moles of S8

Answer

44.8 dm3 CO₂ at S.T.P

Answer

6 moles of S

Question 4

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

Answer

H₂O and H⁺

Answer

CH₄ and AlCl₃

Answer

NH₃ and BF₃

Answer

NH₃ and H⁺

Question 5

5. Potassium crystallizes with a

Answer

Orthogonal lattice

Answer

Cubic lattice

Answer

Ortho rhombic lattice

Question 6

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

Question 7

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

Question 8

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

Question 9

9. Amorphous substances possess

Answer

Sharp melting points

Answer

No definite heat of fusion

Answer

Sharp B.P.

Answer

Definite heat of fusion

Question 10

10. 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 11

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

Answer

6.02 x 10²³

Answer

2 x 6.02 x 10²³

Answer

4 x 6.02 x 10²³

Answer

3/2 x 6.02 x 10²³

Question 12

12. 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 13

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

Question 14

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

Answer

Vaporization

Answer

Filtration

Answer

Sublimation

Answer

Condensation

Question 15

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

Answer

C₃H₅O₂

Answer

C₄H₁₀O₂

Answer

C₃H₁₀O₂

Answer

C₆H₁₀O₄

Question 16

16. For c coordination number of four, anion sits at the center of ________ where corners are occupied by cations

Answer

Octahedron

Answer

Tetrahedron

Question 17

17. Crystals can be classified into

Answer

14 crystal systems

Answer

7 crystal systems

Answer

3 crystal systems

Answer

4 crystal systems

Question 18

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

Question 19

19. Amorphous substance posses

Answer

No sharp melting points

Answer

No definite geometry

Answer

No definite heat of fusion

Answer

All of these

Question 20

20. Particles that most effects material properties

Answer

Valence electrons

Question 21

21. The mass of one mole of electron is

Question 22

22. Air at sea level is dense. This is a practical application of

Answer

Avogadro’s law

Answer

Charles’ law

Answer

Dalton’s law

Answer

Boyle’s law

Question 23

23. Solvents of covalent compounds include all but

Answer

Tetra chloromethane

Question 24

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

Question 25

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

Answer

Tetravalent

Answer

Pentavalent impurity

Answer

Divalent impurity

Answer

Trivalent impurity

Question 26

26. 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 0.5 M

Answer

10 mL of 0.02 M

Answer

5 mL of 0.1 M

Answer

10 mL of 0.1 M

Question 27

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

Answer

Moderately

Question 28

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

Question 29

29. 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 and B evaporates at the same rate

Answer

B evaporates more readily than A

Answer

A evaporates more readily than C

Answer

B evaporates less readily than C

Question 30

30. Which of the following is a pseudo solid?

Question 31

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

Question 32

32. 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 33

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

Answer

2.0478 x 10 ²⁴

Answer

4.0956 x 10 ²⁴

Answer

1.5057 x 10 ²⁴

Answer

3.0115 x 10 ²⁴

Question 34

34. Crystalline solids can be identified easily from their

Answer

Transition temperature

Answer

Definite geometry

Answer

Sharp melting point

Question 35

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

Question 36

36. 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

About the same as the molar volumes of liquids

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

Question 37

37. 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 38

38. 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 39

39. The allotropic forms of an element are called

Answer

Isoelectronic

Answer

Allotropes

Question 40

40. How many allotropic forms are present in carbon?

Question 41

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

Question 42

42. 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 25 dm³

Answer

Volume of O₂ required is 50 dm³

Answer

Volume of CO₂ formed is 60 dm³

Question 43

43. Which of the following substances is not amorphous?

Question 44

44. Poor conductors of electricity is a characteristic of

Answer

Covalent compounds

Answer

Diatic bonds

Answer

Metallic compounds

Answer

Ionic compounds

Question 45

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

Answer

CO₂ is 1.25 times faster than CO

Answer

CO is 3.75 times faster than CO₂

Answer

Both diffused at the same time

Answer

CO is 1.25 times faster than CO₂

Question 46

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

Answer

They melt over a range of temperature

Answer

They are anisotropic

Answer

There are rigid and in-compressible

Answer

There is no orderly arrangement of particles

Question 47

47. Isotopes differ in

Answer

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

Answer

Chemical properties

Answer

Arrangement of electrons in orbitals

Answer

Properties which depend upon mass

Question 48

48. Which is distilled first?

Answer

Liquid N₂

Answer

Liquid H₂

Answer

Liquid CO₂

Answer

Liquid O₂

Question 49

49. Fluted filter paper is used for

Answer

Filtering the hot saturated solution

Answer

Increasing the rate of filtration

Answer

To avoid premature crystallization of the solute

Answer

To dissolve large amount of substance at its boiling point

Question 50

50. Which of the following has least mass?

Answer

7.0 g of Ag.

Answer

2 gram atom of nitrogen

Answer

3 x 10²³ atoms of C

Answer

1 mole of S

Question 51

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

Answer

Free valence electrons

Answer

Ione pair of electrons

Question 52

52. 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 53

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

Question 54

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

Answer

159 g/Cm²

Answer

159 mm Hg.

Question 55

55. 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 56

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

Question 57

57. Which solids are called true solids?

Answer

Crystalline

Question 58

58. 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 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

Allotropic crystal

Answer

Isomeric crystals

Answer

Liquid Crystals

Answer

Isomorphous crystals

Question 60

60. A solid may be made up of

Answer

A, B and C

Question 61

61. Under what conditions real gases deviate from ideal behavior

Answer

High pressure

Answer

Low temperature

Answer

Both b and c

Answer

High temperature

Question 62

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

Answer

NaCl type structure

Answer

ZnS type structure

Answer

CsCl type structure

Answer

AB₂ type ionic compound

Question 63

63. 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 64

64. Repeatable entity of a crystal structure is known as

Answer

Miller indices

Answer 154

None of these

Answer 155

Tetrahedral manner

Answer 156

Hexagonal manner

Answer 157

Square planner manner

Answer 158

Altahydral manner

Answer 159

Super-cooled liquid

Answer 160

None of these

Answer 161

Micro-crystalline solid

Answer 162

CaSO₄.2H₂O

Answer 163

Acetic acid

Answer 164

Chloroform

Answer 165

Sulphuric acid

Answer 166

Liquid solid chromatography

Answer 167

Descending paper chromatography

Answer 168

Liquid gas chromatography

Answer 169

Ascending paper chromatography

Answer 170

Change by 33%

Answer 171

Is changed by about 26%

Answer 172

Is unchanged

Answer 173

Molecules of all the gases have same size and same mass

Answer 174

All molecular collisions are elastic

Answer 175

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

Answer 176

Molecules are in chaotic motion

Answer 177

2.24 liter

Answer 178

22.4 liter

Answer 179

Having wide spaces

Answer 180

Randomly moving

Answer 181

Causing pressure

Answer 182

Orderly arranged

Answer 183

Isotropical

Answer 184

Rhombohedral

Answer 185

Monoclinic

Answer 186

Isomorphism

Answer 187

None of these

Answer 188

Polymorphism

Answer 189

100 mm of Hg

Answer 190

700 mm of Hg

Answer 191

1489 mm of Hg

Answer 192

790 mm of Hg

Answer 193

Monoclimic

Answer 194

Undergo clean cleave when cut with knife

Answer 195

Can possess small regions of orderly arrangement of atoms

Answer 196

Have perfect arrangement of atoms

Answer 197

Have sharp melting point

Answer 198

Both fcc and bcc

Answer 199

None of these

Answer 200

Hg Be₂Ca₂Cu₂O₈

Answer 201

Y Ba₂Cu₃O₇

Answer 202

Yb Ba₂Cu₂O₈

Answer 203

Y B₂Cu₃O₇

Answer 204

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

Answer 205

None of these

Answer 206

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

Answer 207

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

Answer 208

None of these

Answer 209

Inorganic compounds

Answer 210

Both A and B

Answer 211

None of these

Answer 212

Organic compounds

Answer 213

Na(g) → N²⁺ (g) + e¯

Answer 214

Na(g) → N²⁺ (g) + +¯

Answer 215

Na(s) → N²⁺ (g) + 2e¯

Answer 216

Na(s) → N²⁺ (g) + e¯

Answer 217

All types of atoms and molecules

Answer 218

Polar compounds

Answer 219

2 liter atm

Answer 220

1 liter atm

Answer 221

3 liter atm

Answer 222

p-block elements

Answer 223

Lanthanides

Answer 224

Transition elements

Answer 225

None of these

Answer 226

Solid crystals

Answer 227

Ionic crystals

Answer 228

Liquid crystals

Answer 229

Ionic compounds

Answer 230

Metallic bonds

Answer 231

Diatic bond

Answer 232

Covalent bonds

Answer 233

Low temperature

Answer 234

High solubility

Answer 235

High ignition temperature

Answer 236

High concentration

Answer 237

Filtrate runs down without crystals

Answer 238

This gives bigger size crystals

Answer 239

This gives medium size crystals

Answer 240

The filtrate is quick

Answer 241

127°C and 1 atm

Answer 242

273°C and 2 atm

Answer 243

S.T.P (0°C and 1 atm)

Answer 244

0°C and 2 atm

Answer 245

Converted into sheets

Answer 246

All of these

Answer 247

Melted easily

Answer 248

Converted into wires

Answer 249

8.5 Pounds

Answer 250

101.325 Pa

Answer 251

All of these

Answer 252

Transition temperature

Answer 253

Definite geometry

Answer 254

Different molar mass

Answer 255

Non-polar nature of gases

Answer 256

Elastic collisions of gas molecules

Answer 257

Pressure of dust particles in air

Answer 258

Liquid < gas < solid

Answer 259

Gas < liquid < solid

Answer 260

Gas = liquid = solid

Answer 261

Gas < liquid < solid

Answer 262

Heat the mixture and allow it to cool

Answer 263

Add water to the mixture and filter

Answer 264

Add dilute acid to the mixture and filter

Answer 265

Place the mixture in a separating funnel

Answer 266

Fluted filter paper

Answer 267

Both A & B

Answer 268

Normal filter paper

Answer 269

Half that in 8 g of He

Answer 270

6.022 x 10²²

Answer 271

Twice that in 60 g carbon

Answer 272

558.5 x 6.022 x 10²³

Answer 273

Gets a double negative charge

Answer 274

Gets a single positive charge

Answer 275

Gets a single negative charge

Answer 276

Gets a double positive charge

Answer 277

Electrical attraction

Answer 278

Non covalent bond force

Answer 279

Electrostatic force

Answer 280

Covalent bond

Answer 281

The gas is chlorine

Answer 282

Oxide of the gas is strongly acidic

Answer 283

A gas is liberated

Answer 284

Colour of the gas is greenish yellow

Answer 285

Repeated extraction and small portion of solvent

Answer 286

Single extraction and large portion of solvent

Answer 287

Repeated extraction and large portion of solvent

Answer 288

Single extraction and small portion of solvent

Answer 289

Increase of K.E of molecules

Answer 290

Increase of intermolecular interactions

Answer 291

Increase in potential energy of molecules

Answer 292

Decrease of surface tension

Answer 293

Isotopic form

Answer 294

Crystalline forms

Answer 295

Isomorphism

Answer 296

-10°C and 2.0 atm

Answer 297

100°C and 2.0 atm

Answer 298

-10°C and 5.0 atm

Answer 299

0°C and 2.0 atm

Answer 300

Molecular solids

Answer 301

Covalent solids

Answer 302

Pseudo solids

Answer 303

Ionic solids

Answer 304

3.72 x 10¯²³ g

Answer 305

1.3 x 10¯²⁰ g

Answer 306

5.01 x 10¯²¹ g

Answer 307

1.4 x 10¯²¹ g

Answer 308

Anisotropy

Answer 309

Isomorphism

Answer 310

Polymorphism

Answer 311

Crystallization

Answer 312

Chromatography

Answer 313

Solvent extraction

Answer 314

22.4 liters

Answer 315

2.24 liters

Answer 316

11.2 liters

Answer 317

Relative abundance

Answer 318

Number of isotopes

Answer 319

Same physical and different chemical properties

Answer 320

Different physical and chemical properties

Answer 321

Different physical and same chemical properties

Answer 322

Same physical and chemical properties

Answer 323

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

Answer 324

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

Answer 325

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

Answer 326

Gases do not have a definite shape and volume

Answer 327

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

Answer 328

Increased attraction between the molecules

Answer 329

Decreased volume of the solution

Answer 330

Decreased covalent and hydrogen bond forces

Answer 331

15 tm, and 500 K

Answer 332

1 atm, and 273 K

Answer 333

15 atm, and 200 K

Answer 334

0.5 atm, and 500 K

Answer 335

Anisotropy

Answer 336

Polymorphism

Answer 337

Isomorphism

Answer 338

2nλ = d sin θ

Answer 339

nλ = 2 d sin θ

Answer 340

nλ = 1/2d sin θ

Answer 341

nλ = 2 θ sin θ

Answer 342

Different physical and chemical properties

Answer 343

Different physical and same chemical properties

Answer 344

Same physical and chemical properties

Answer 345

Same physical and difference chemical properties

Answer 346

Monoclinic

Answer 347

Tetragonal

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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