Chemistry Liquids and Solids Online Mcqs Test

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Question 1

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

Answer

C₃H₁₀O₂

Answer

C₆H₁₀O₄

Answer

C₄H₁₀O₂

Answer

C₃H₅O₂

Question 2

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

Answer

They melt over a range of temperature

Answer

There is no orderly arrangement of particles

Answer

There are rigid and in-compressible

Answer

They are anisotropic

Question 3

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

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. A solid may be made up of

Answer

A, B and C

Question 6

6. Which of the following is isotropic

Question 7

7. Half atmospheric pressure is

Answer

8.5 Pounds

Answer

101.325 Pa

Question 8

8. 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 9

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

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

Answer

One mole of NH₃ will produce ½ mole of N₂

Question 10

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

Question 11

11. 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

Half that in 8 g of He

Answer

558.5 x 6.022 x 10²³

Answer

6.022 x 10²²

Question 12

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

Question 13

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

Question 14

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

Question 15

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

Answer

Tetrahedron

Answer

Octahedron

Question 16

16. 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 17

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

Question 18

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

Answer

Number of isotopes

Answer

Relative abundance

Question 19

19. 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 20

20. 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

Is changed by about 26%

Answer

Change by 33%

Question 21

21. 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

Allotropic crystal

Answer

Isomeric crystals

Question 22

22. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

Answer

22.4 liter

Answer

2.24 liter

Question 23

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

Answer

Anisotropy

Answer

Isomorphism

Answer

Polymorphism

Question 24

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

Answer

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

Answer

The carbon atoms are arranged layers

Answer

The coordination number of carbon atoms is 4

Answer

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

Question 25

25. Which is distilled first?

Answer

Liquid CO₂

Answer

Liquid N₂

Answer

Liquid O₂

Answer

Liquid H₂

Question 26

26. The crystal structure having face centered cubic arrangement is

Question 27

27. Mean distance between atoms in the range of

Question 28

28. Particles that most effects material properties

Answer

Valence electrons

Question 29

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

Answer

Boyle’s law

Answer

Charles’ law

Answer

Dalton’s law

Answer

Avogadro’s law

Question 30

30. Amorphous solids

Answer

Can possess small regions of orderly arrangement of atoms

Answer

Have sharp melting point

Answer

Have perfect arrangement of atoms

Answer

Undergo clean cleave when cut with knife

Question 31

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

Answer

None of these

Question 32

32. Amorphous substances possess

Answer

Definite heat of fusion

Answer

Sharp B.P.

Answer

Sharp melting points

Answer

No definite heat of fusion

Question 33

33. 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

Remains unchanged

Answer

Be a function of the molecular mass of substance

Answer

Decrease twice

Question 34

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

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

Answer

Increased attraction between the molecules

Answer

Decreased volume of the solution

Question 35

35. 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

Add water to the mixture and filter

Answer

Heat the mixture and allow it to cool

Answer

Add dilute acid to the mixture and filter

Question 36

36. When one of the following statements is wrong for gases?

Answer

Gases do not have a definite shape and volume

Answer

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

Answer

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

Answer

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

Question 37

37. Crystalline solids can be identified easily by their

Answer

Transition temperature

Answer

All of these

Answer

Definite geometry

Question 38

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

Question 39

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

Answer

NH₃ and BF₃

Answer

CH₄ and AlCl₃

Answer

NH₃ and H⁺

Answer

H₂O and H⁺

Question 40

40. Repeatable entity of a crystal structure is known as

Answer

Miller indices

Question 41

41. 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 42

42. The mass of one mole of electron is

Question 43

43. A malleable solid is one which can be

Answer

All of these

Answer

Converted into wires

Answer

Converted into sheets

Answer

Melted easily

Question 44

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

Answer

Chloroform

Answer

Sulphuric acid

Answer

Acetic acid

Question 45

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

Question 46

46. 100 g of CaCO₃ is treated with 1 liter of 1 NHCl. What would be the weight of CO₂ liberated after the completion of the reaction?

Question 47

47. Fluted filter paper is used for

Answer

Increasing the rate of filtration

Answer

To dissolve large amount of substance at its boiling point

Answer

To avoid premature crystallization of the solute

Answer

Filtering the hot saturated solution

Question 48

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

Answer

Gets a double negative charge

Answer

Gets a single negative charge

Answer

Gets a double positive charge

Answer

Gets a single positive charge

Question 49

49. Solvent extraction is mostly applied to separate

Answer

Both A and B

Answer

Organic compounds

Answer

None of these

Answer

Inorganic compounds

Question 50

50. 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

10 mL of 0.1 M

Answer

5 mL of 0.1 M

Question 51

51. Van der Waal’s forces exist in

Answer

All types of atoms and molecules

Answer

Polar compounds

Question 52

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

Answer

Isomorphism

Answer

Anisotropy

Answer

Polymorphism

Question 53

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

Answer

Pressure of dust particles in air

Answer

Elastic collisions of gas molecules

Answer

Different molar mass

Answer

Non-polar nature of gases

Question 54

54. Crystalline solids can be identified easily from their

Answer

Definite geometry

Answer

Sharp melting point

Answer

Transition temperature

Question 55

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

Answer

Covalent bond

Answer

Electrostatic force

Answer

Electrical attraction

Answer

Non covalent bond force

Question 56

56. ‘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 57

57. Amorphous substance posses

Answer

All of these

Answer

No definite heat of fusion

Answer

No definite geometry

Answer

No sharp melting points

Question 58

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

Answer

1489 mm of Hg

Answer

700 mm of Hg

Answer

100 mm of Hg

Answer

790 mm of Hg

Question 59

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

Answer

None of these

Question 60

60. Triple point of water is

Question 61

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

Answer

15 atm, and 200 K

Answer

1 atm, and 273 K

Answer

0.5 atm, and 500 K

Answer

15 tm, and 500 K

Question 62

62. Bragg’s law is given by equation

Answer

nλ = 2 θ sin θ

Answer

2nλ = d sin θ

Answer

nλ = 2 d sin θ

Answer

nλ = 1/2d sin θ

Question 63

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

Answer

High concentration

Answer

Low temperature

Answer

High ignition temperature

Answer

High solubility

Question 64

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

Answer 155

Crystalline

Answer 156

Chromatography

Answer 157

Solvent extraction

Answer 158

Crystallization

Answer 159

Increase of intermolecular interactions

Answer 160

Decrease of surface tension

Answer 161

Increase of K.E of molecules

Answer 162

Increase in potential energy of molecules

Answer 163

Gas < liquid < solid

Answer 164

Gas = liquid = solid

Answer 165

Gas < liquid < solid

Answer 166

Liquid < gas < solid

Answer 167

Properties which depend upon mass

Answer 168

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

Answer 169

Chemical properties

Answer 170

Arrangement of electrons in orbitals

Answer 171

None of these

Answer 172

Both fcc and bcc

Answer 173

Tetravalent

Answer 174

Divalent impurity

Answer 175

Pentavalent impurity

Answer 176

Trivalent impurity

Answer 177

Ionic compounds

Answer 178

Metallic compounds

Answer 179

Diatic bonds

Answer 180

Covalent compounds

Answer 181

Repeated extraction and small portion of solvent

Answer 182

Single extraction and large portion of solvent

Answer 183

Repeated extraction and large portion of solvent

Answer 184

Single extraction and small portion of solvent

Answer 185

Filtration

Answer 186

Condensation

Answer 187

Sublimation

Answer 188

Vaporization

Answer 189

11.2 liters

Answer 190

2.24 liters

Answer 191

22.4 liters

Answer 192

Fluted filter paper

Answer 193

Both A & B

Answer 194

Normal filter paper

Answer 195

AB₂ type ionic compound

Answer 196

ZnS type structure

Answer 197

NaCl type structure

Answer 198

CsCl type structure

Answer 199

He will feel cool

Answer 200

His blood pressure will increase

Answer 201

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

Answer 202

He will feel warmth

Answer 203

4 crystal systems

Answer 204

7 crystal systems

Answer 205

14 crystal systems

Answer 206

3 crystal systems

Answer 207

3 liter atm

Answer 208

2 liter atm

Answer 209

1 liter atm

Answer 210

Moderately

Answer 211

Free valence electrons

Answer 212

Ione pair of electrons

Answer 213

Isomorphism

Answer 214

Polymorphism

Answer 215

None of these

Answer 216

Ionic compounds

Answer 217

Covalent bonds

Answer 218

Diatic bond

Answer 219

Metallic bonds

Answer 220

Micro-crystalline solid

Answer 221

None of these

Answer 222

Super-cooled liquid

Answer 223

B evaporates more readily than A

Answer 224

A and B evaporates at the same rate

Answer 225

B evaporates less readily than C

Answer 226

A evaporates more readily than C

Answer 227

High vapour pressures

Answer 228

Low melting points

Answer 229

Solubility in polar solvents

Answer 230

Good conductivity in solid state

Answer 231

Descending paper chromatography

Answer 232

Liquid gas chromatography

Answer 233

Ascending paper chromatography

Answer 234

Liquid solid chromatography

Answer 235

Monoclinic

Answer 236

Tetragonal

Answer 237

Tetra chloromethane

Answer 238

Different physical and same chemical properties

Answer 239

Different physical and chemical properties

Answer 240

Same physical and different chemical properties

Answer 241

Same physical and chemical properties

Answer 242

2.0478 x 10 ²⁴

Answer 243

3.0115 x 10 ²⁴

Answer 244

1.5057 x 10 ²⁴

Answer 245

4.0956 x 10 ²⁴

Answer 246

Allotropes

Answer 247

Isoelectronic

Answer 248

Isomorphism

Answer 249

Crystalline forms

Answer 250

Isotopic form

Answer 251

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 252

8.31 L atm K¯¹ mol¯¹

Answer 253

8.31 JK¯¹ mol¯¹

Answer 254

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 255

The filtrate is quick

Answer 256

Filtrate runs down without crystals

Answer 257

This gives medium size crystals

Answer 258

This gives bigger size crystals

Answer 259

Na(s) → N²⁺ (g) + e¯

Answer 260

Na(g) → N²⁺ (g) + e¯

Answer 261

Na(s) → N²⁺ (g) + 2e¯

Answer 262

Na(g) → N²⁺ (g) + +¯

Answer 263

High pressure

Answer 264

High temperature

Answer 265

Low temperature

Answer 266

Both b and c

Answer 267

S.T.P (0°C and 1 atm)

Answer 268

0°C and 2 atm

Answer 269

127°C and 1 atm

Answer 270

273°C and 2 atm

Answer 271

Colour of the gas is greenish yellow

Answer 272

Oxide of the gas is strongly acidic

Answer 273

A gas is liberated

Answer 274

The gas is chlorine

Answer 275

Boyle’s law

Answer 276

Charles’ law

Answer 277

Graham’s law

Answer 278

Dalton’s law

Answer 279

6.02 x 10²³

Answer 280

3/2 x 6.02 x 10²³

Answer 281

4 x 6.02 x 10²³

Answer 282

2 x 6.02 x 10²³

Answer 283

Molecules of all the gases have same size and same mass

Answer 284

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

Answer 285

Molecules are in chaotic motion

Answer 286

All molecular collisions are elastic

Answer 287

Monoclimic

Answer 288

CaSO₄.2H₂O

Answer 289

159 mm Hg.

Answer 290

159 g/Cm²

Answer 291

Orthogonal lattice

Answer 292

Cubic lattice

Answer 293

Ortho rhombic lattice

Answer 294

Covalent solids

Answer 295

Molecular solids

Answer 296

Ionic solids

Answer 297

Pseudo solids

Answer 298

Liquid crystals

Answer 299

Solid crystals

Answer 300

None of these

Answer 301

Ionic crystals

Answer 302

Transition elements

Answer 303

p-block elements

Answer 304

Lanthanides

Answer 305

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

Answer 306

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

Answer 307

At high pressure, the intermolecular attraction becomes significant

Answer 308

A high pressure, the volume of the gas becomes insignificant

Answer 309

-10°C and 2.0 atm

Answer 310

-10°C and 5.0 atm

Answer 311

100°C and 2.0 atm

Answer 312

0°C and 2.0 atm

Answer 313

Tetrahedral manner

Answer 314

Altahydral manner

Answer 315

Square planner manner

Answer 316

Hexagonal manner

Answer 317

Different physical and chemical properties

Answer 318

Different physical and same chemical properties

Answer 319

Same physical and chemical properties

Answer 320

Same physical and difference chemical properties

Answer 321

Randomly moving

Answer 322

Orderly arranged

Answer 323

Having wide spaces

Answer 324

Causing pressure

Answer 325

Little bit greater than the molar volumes of liquid

Answer 326

Little bit less than the molar volumes of solids

Answer 327

Much larger than the molar volumes of liquids and solids

Answer 328

About the same as the molar volumes of liquids

Answer 329

Hg Be₂Ca₂Cu₂O₈

Answer 330

Y B₂Cu₃O₇

Answer 331

Y Ba₂Cu₃O₇

Answer 332

Yb Ba₂Cu₂O₈

Answer 333

Isotropical

Answer 334

Rhombohedral

Answer 335

Monoclinic

Answer 336

3 x 10²³ atoms of C

Answer 337

1 mole of S

Answer 338

7.0 g of Ag.

Answer 339

2 gram atom of nitrogen

Answer 340

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

Answer 341

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

Answer 342

None of these

Answer 343

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

Answer 344

3.72 x 10¯²³ g

Answer 345

1.3 x 10¯²⁰ g

Answer 346

5.01 x 10¯²¹ g

Answer 347

1.4 x 10¯²¹ g

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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