Chemistry Liquids and Solids Online Mcqs Test

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Question 1

1. In case of elements the polymorphism is called

Answer

Isotopic form

Answer

Crystalline forms

Answer

Isomorphism

Question 2

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

Question 3

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

Answer

15 tm, and 500 K

Answer

15 atm, and 200 K

Answer

0.5 atm, and 500 K

Answer

1 atm, and 273 K

Question 4

4. Crystals can be classified into

Answer

7 crystal systems

Answer

4 crystal systems

Answer

3 crystal systems

Answer

14 crystal systems

Question 5

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

Question 6

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

Question 7

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

Answer

100 mm of Hg

Answer

790 mm of Hg

Answer

700 mm of Hg

Answer

1489 mm of Hg

Question 8

8. Amorphous substances possess

Answer

No definite heat of fusion

Answer

Sharp melting points

Answer

Definite heat of fusion

Answer

Sharp B.P.

Question 9

9. Fluted filter paper is used for

Answer

To avoid premature crystallization of the solute

Answer

To dissolve large amount of substance at its boiling point

Answer

Increasing the rate of filtration

Answer

Filtering the hot saturated solution

Question 10

10. Amorphous substance posses

Answer

No definite geometry

Answer

No definite heat of fusion

Answer

All of these

Answer

No sharp melting points

Question 11

11. 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 12

12. 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) + 2e¯

Answer

Na(s) → N²⁺ (g) + e¯

Question 13

13. Which of the following are more temperature sensitive?

Answer

Solid crystals

Answer

Ionic crystals

Answer

Liquid crystals

Answer

None of these

Question 14

14. 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 15

15. Which of the following has least mass?

Answer

3 x 10²³ atoms of C

Answer

7.0 g of Ag.

Answer

1 mole of S

Answer

2 gram atom of nitrogen

Question 16

16. Repeatable entity of a crystal structure is known as

Answer

Miller indices

Question 17

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

Question 18

18. 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

22.4 liters

Answer

11.2 liters

Answer

2.24 liters

Question 19

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

Answer

Both fcc and bcc

Answer

None of these

Question 20

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

Answer

4.0956 x 10 ²⁴

Answer

2.0478 x 10 ²⁴

Answer

3.0115 x 10 ²⁴

Answer

1.5057 x 10 ²⁴

Question 21

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

Answer

ZnS type structure

Answer

NaCl type structure

Answer

AB₂ type ionic compound

Answer

CsCl type structure

Question 22

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

Answer

Anisotropy

Answer

Polymorphism

Answer

Isomorphism

Question 23

23. The surface formed by the breakage of a crystal is called _________ plane.

Question 24

24. Super conductors are derived from compounds of

Answer

Transition elements

Answer

p-block elements

Answer

Lanthanides

Question 25

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

Answer

C₃H₅O₂

Answer

C₆H₁₀O₄

Answer

C₄H₁₀O₂

Answer

C₃H₁₀O₂

Question 26

26. Solvents of covalent compounds include all but

Answer

Tetra chloromethane

Question 27

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

Answer

Boyle’s law

Answer

Graham’s law

Answer

Dalton’s law

Answer

Charles’ law

Question 28

28. Potassium crystallizes with a

Answer

Cubic lattice

Answer

Orthogonal lattice

Answer

Ortho rhombic lattice

Question 29

29. Crystalline solids can be identified easily by their

Answer

All of these

Answer

Definite geometry

Answer

Transition temperature

Question 30

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

Question 31

31. The most efficient solvent extraction method is by using

Answer

Single extraction and small portion of solvent

Answer

Repeated extraction and large portion of solvent

Answer

Single extraction and large portion of solvent

Answer

Repeated extraction and small portion of solvent

Question 32

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

Answer

None of these

Question 33

33. Which of the following is isotropic

Question 34

34. The increasing vapour caused by heating a liquid is due to

Answer

Increase of K.E of molecules

Answer

Increase in potential energy of molecules

Answer

Decrease of surface tension

Answer

Increase of intermolecular interactions

Question 35

35. Which is distilled first?

Answer

Liquid N₂

Answer

Liquid O₂

Answer

Liquid CO₂

Answer

Liquid H₂

Question 36

36. What is the concentration of nitrate ions, if equal volumes of 0.1 M AgNO₃ and 0.1 M NaCl are mixed together?

Question 37

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

Question 38

38. 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 39

39. Ice is ________ crystal

Question 40

40. A malleable solid is one which can be

Answer

Melted easily

Answer

Converted into wires

Answer

All of these

Answer

Converted into sheets

Question 41

41. The allotropic forms of an element are called

Answer

Isoelectronic

Answer

Allotropes

Question 42

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

Answer

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

Answer

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

Answer

Gases do not have a definite shape and volume

Answer

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

Question 43

43. Bragg’s law is given by equation

Answer

2nλ = d sin θ

Answer

nλ = 1/2d sin θ

Answer

nλ = 2 d sin θ

Answer

nλ = 2 θ sin θ

Question 44

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

Answer

100°C and 2.0 atm

Answer

-10°C and 5.0 atm

Answer

0°C and 2.0 atm

Answer

-10°C and 2.0 atm

Question 45

45. Van der Waal’s forces exist in

Answer

All types of atoms and molecules

Answer

Polar compounds

Question 46

46. ‘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 47

47. Crystalline solids can be identified easily from their

Answer

Sharp melting point

Answer

Definite geometry

Answer

Transition temperature

Question 48

48. In diamond, the carbon atoms are arranged in a

Answer

Altahydral manner

Answer

Tetrahedral manner

Answer

Hexagonal manner

Answer

Square planner manner

Question 49

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

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

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

Question 50

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

Answer

Moderately

Question 51

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

Question 52

52. Which of the following techniques is a type paper chromatography in which solvent is in a pool at the bottom of the vessel?

Answer

Descending paper chromatography

Answer

Ascending paper chromatography

Answer

Liquid solid chromatography

Answer

Liquid gas chromatography

Question 53

53. The material possessing superconducting properties is

Answer

Yb Ba₂Cu₂O₈

Answer

Y Ba₂Cu₃O₇

Answer

Y B₂Cu₃O₇

Answer

Hg Be₂Ca₂Cu₂O₈

Question 54

54. 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

Liquid Crystals

Answer

Allotropic crystal

Answer

Isomorphous crystals

Answer

Isomeric crystals

Question 55

55. 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 56

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

Answer

Polymorphism

Answer

None of these

Answer

Isomorphism

Question 57

57. 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

Much larger than the molar volumes of liquids and solids

Answer

About the same as the molar volumes of liquids

Question 58

58. How many allotropic forms are present in carbon?

Question 59

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

Question 60

60. The mass of one mole of electron is

Question 61

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

Question 62

62. 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

Question 63

63. Amorphous solids

Answer

Undergo clean cleave when cut with knife

Answer

Can possess small regions of orderly arrangement of atoms

Answer

Have perfect arrangement of atoms

Answer

Have sharp melting point

Question 64

64. The example of hexagonal system is

Answer 151

Charles’ law

Answer 152

Avogadro’s law

Answer 153

Boyle’s law

Answer 154

Dalton’s law

Answer 155

Heat the mixture and allow it to cool

Answer 156

Add dilute acid to the mixture and filter

Answer 157

Place the mixture in a separating funnel

Answer 158

Add water to the mixture and filter

Answer 159

159 mm Hg.

Answer 160

159 g/Cm²

Answer 161

Good conductivity in solid state

Answer 162

High vapour pressures

Answer 163

Low melting points

Answer 164

Solubility in polar solvents

Answer 165

Monoclinic

Answer 166

Rhombohedral

Answer 167

Isotropical

Answer 168

Filtration

Answer 169

Sublimation

Answer 170

Condensation

Answer 171

Vaporization

Answer 172

Different physical and same chemical properties

Answer 173

Same physical and different chemical properties

Answer 174

Different physical and chemical properties

Answer 175

Same physical and chemical properties

Answer 176

8.5 Pounds

Answer 177

101.325 Pa

Answer 178

Ionic solids

Answer 179

Pseudo solids

Answer 180

Molecular solids

Answer 181

Covalent solids

Answer 182

Arrangement of electrons in orbitals

Answer 183

Chemical properties

Answer 184

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

Answer 185

Properties which depend upon mass

Answer 186

1 liter atm

Answer 187

2 liter atm

Answer 188

3 liter atm

Answer 189

Low temperature

Answer 190

High temperature

Answer 191

Both b and c

Answer 192

High pressure

Answer 193

Acetic acid

Answer 194

Sulphuric acid

Answer 195

Chloroform

Answer 196

High ignition temperature

Answer 197

Low temperature

Answer 198

High solubility

Answer 199

High concentration

Answer 200

A, B and C

Answer 201

Both A and B

Answer 202

Organic compounds

Answer 203

Inorganic compounds

Answer 204

None of these

Answer 205

Both diffused at the same time

Answer 206

CO is 1.25 times faster than CO₂

Answer 207

CO₂ is 1.25 times faster than CO

Answer 208

CO is 3.75 times faster than CO₂

Answer 209

CaSO₄.2H₂O

Answer 210

Volume of O₂ required is 25 dm³

Answer 211

Volume of CO₂ formed is 60 dm³

Answer 212

Volume of CO₂ formed is 25 dm³

Answer 213

Volume of O₂ required is 50 dm³

Answer 214

Polymorphism

Answer 215

Anisotropy

Answer 216

Isomorphism

Answer 217

A and C have same reading and are less then B

Answer 218

Number of isotopes

Answer 219

Relative abundance

Answer 220

None of these

Answer 221

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

Answer 222

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

Answer 223

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

Answer 224

Monoclimic

Answer 225

1.4 x 10¯²¹ g

Answer 226

5.01 x 10¯²¹ g

Answer 227

3.72 x 10¯²³ g

Answer 228

1.3 x 10¯²⁰ g

Answer 229

Different physical and chemical properties

Answer 230

Different physical and same chemical properties

Answer 231

Same physical and difference chemical properties

Answer 232

Same physical and chemical properties

Answer 233

Metallic compounds

Answer 234

Covalent compounds

Answer 235

Diatic bonds

Answer 236

Ionic compounds

Answer 237

3/2 x 6.02 x 10²³

Answer 238

2 x 6.02 x 10²³

Answer 239

6.02 x 10²³

Answer 240

4 x 6.02 x 10²³

Answer 241

Crystalline

Answer 242

Crystallization

Answer 243

Chromatography

Answer 244

Solvent extraction

Answer 245

Gets a single positive charge

Answer 246

Gets a double negative charge

Answer 247

Gets a single negative charge

Answer 248

Gets a double positive charge

Answer 249

8.31 JK¯¹ mol¯¹

Answer 250

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 251

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 252

8.31 L atm K¯¹ mol¯¹

Answer 253

S.T.P (0°C and 1 atm)

Answer 254

273°C and 2 atm

Answer 255

127°C and 1 atm

Answer 256

0°C and 2 atm

Answer 257

He will feel warmth

Answer 258

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

Answer 259

He will feel cool

Answer 260

His blood pressure will increase

Answer 261

The coordination number of carbon atoms is 4

Answer 262

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

Answer 263

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

Answer 264

The carbon atoms are arranged layers

Answer 265

None of these

Answer 266

H₂O and H⁺

Answer 267

NH₃ and BF₃

Answer 268

NH₃ and H⁺

Answer 269

CH₄ and AlCl₃

Answer 270

Liquid < gas < solid

Answer 271

Gas = liquid = solid

Answer 272

Gas < liquid < solid

Answer 273

Gas < liquid < solid

Answer 274

Tetragonal

Answer 275

Monoclinic

Answer 276

5 mL of 0.1 M

Answer 277

10 mL of 0.5 M

Answer 278

10 mL of 0.02 M

Answer 279

10 mL of 0.1 M

Answer 280

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

Answer 281

Molecules are in chaotic motion

Answer 282

All molecular collisions are elastic

Answer 283

Molecules of all the gases have same size and same mass

Answer 284

6.022 x 10²²

Answer 285

558.5 x 6.022 x 10²³

Answer 286

Twice that in 60 g carbon

Answer 287

Half that in 8 g of He

Answer 288

Orderly arranged

Answer 289

Having wide spaces

Answer 290

Causing pressure

Answer 291

Randomly moving

Answer 292

B evaporates more readily than A

Answer 293

B evaporates less readily than C

Answer 294

A and B evaporates at the same rate

Answer 295

A evaporates more readily than C

Answer 296

Different molar mass

Answer 297

Non-polar nature of gases

Answer 298

Pressure of dust particles in air

Answer 299

Elastic collisions of gas molecules

Answer 300

Covalent bonds

Answer 301

Metallic bonds

Answer 302

Diatic bond

Answer 303

Ionic compounds

Answer 304

Divalent impurity

Answer 305

Pentavalent impurity

Answer 306

Tetravalent

Answer 307

Trivalent impurity

Answer 308

Is changed by about 26%

Answer 309

Is unchanged

Answer 310

Change by 33%

Answer 311

This gives medium size crystals

Answer 312

Filtrate runs down without crystals

Answer 313

The filtrate is quick

Answer 314

This gives bigger size crystals

Answer 315

At high pressure, the intermolecular attraction becomes significant

Answer 316

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

Answer 317

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

Answer 318

A high pressure, the volume of the gas becomes insignificant

Answer 319

None of these

Answer 320

Micro-crystalline solid

Answer 321

Super-cooled liquid

Answer 322

Octahedron

Answer 323

Tetrahedron

Answer 324

Decreased covalent and hydrogen bond forces

Answer 325

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

Answer 326

Increased attraction between the molecules

Answer 327

Decreased volume of the solution

Answer 328

20 moles of S8

Answer 329

5.0 moles of SO₂

Answer 330

6 moles of S

Answer 331

44.8 dm3 CO₂ at S.T.P

Answer 332

A gas is liberated

Answer 333

Colour of the gas is greenish yellow

Answer 334

The gas is chlorine

Answer 335

Oxide of the gas is strongly acidic

Answer 336

There are rigid and in-compressible

Answer 337

There is no orderly arrangement of particles

Answer 338

They are anisotropic

Answer 339

They melt over a range of temperature

Answer 340

Free valence electrons

Answer 341

Ione pair of electrons

Answer 342

22.4 liter

Answer 343

2.24 liter

Answer 344

Valence electrons

Answer 345

Normal filter paper

Answer 346

Both A & B

Answer 347

Fluted filter paper

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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