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

C₄H₁₀O₂

Answer

C₃H₅O₂

Answer

C₆H₁₀O₄

Answer

C₃H₁₀O₂

Question 2

2. The insoluble impurities in the saturated solution are removed by

Answer

Fluted filter paper

Answer

Both A & B

Answer

Normal filter paper

Question 3

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

Answer

Both fcc and bcc

Answer

None of these

Question 4

4. Which of the following has least mass?

Answer

3 x 10²³ atoms of C

Answer

2 gram atom of nitrogen

Answer

1 mole of S

Answer

7.0 g of Ag.

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. Isomorphic substances have

Answer

Different physical and chemical properties

Answer

Same physical and chemical properties

Answer

Different physical and same chemical properties

Answer

Same physical and different chemical properties

Question 7

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

Answer

Boyle’s law

Answer

Charles’ law

Answer

Avogadro’s law

Answer

Dalton’s law

Question 8

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

Question 9

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

Question 10

10. Ionic solids are characterized by

Answer

Low melting points

Answer

High vapour pressures

Answer

Solubility in polar solvents

Answer

Good conductivity in solid state

Question 11

11. Number of atoms in 558.5 g of Fe (At. Mass of Fe = 55.85 g mole¯¹) is

Answer

Half that in 8 g of He

Answer

558.5 x 6.022 x 10²³

Answer

6.022 x 10²²

Answer

Twice that in 60 g carbon

Question 12

12. The molar volume of CO₂ is maximum at

Answer

S.T.P (0°C and 1 atm)

Answer

0°C and 2 atm

Answer

127°C and 1 atm

Answer

273°C and 2 atm

Question 13

13. A bottle of copper (II) oxide has been contaminated with some solid, NaCl, How can NaCl be removed from the Copper (II) oxide?

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

Answer

Place the mixture in a separating funnel

Question 14

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

Answer

High ignition temperature

Answer

High solubility

Answer

High concentration

Answer

Low temperature

Question 15

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

Question 16

16. Amorphous substance posses

Answer

No sharp melting points

Answer

No definite heat of fusion

Answer

No definite geometry

Answer

All of these

Question 17

17. Which solids are called true solids?

Answer

Crystalline

Question 18

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

Answer

Isomorphism

Answer

Polymorphism

Answer

Anisotropy

Question 19

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

Answer

3/2 x 6.02 x 10²³

Answer

6.02 x 10²³

Answer

2 x 6.02 x 10²³

Answer

4 x 6.02 x 10²³

Question 20

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

Question 21

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

Answer

None of these

Question 22

22. Amorphous solids

Answer

Undergo clean cleave when cut with knife

Answer

Have sharp melting point

Answer

Have perfect arrangement of atoms

Answer

Can possess small regions of orderly arrangement of atoms

Question 23

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

Answer

Number of isotopes

Answer

Relative abundance

Question 24

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

Answer

None of these

Question 25

25. Triple point of water is

Question 26

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

Question 27

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

Answer

Liquid gas chromatography

Answer

Liquid solid chromatography

Answer

Descending paper chromatography

Answer

Ascending paper chromatography

Question 28

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

Question 29

29. Consider the physical properties of the gases. Which of the following statements about particles of gasses is incorrect? The particles are

Answer

Causing pressure

Answer

Randomly moving

Answer

Having wide spaces

Answer

Orderly arranged

Question 30

30. The mass of one mole of electron is

Question 31

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

Question 32

32. ‘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 33

33. 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 34

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

Answer

Crystallization

Answer

Chromatography

Answer

Solvent extraction

Question 35

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

Answer

Monoclimic

Question 36

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

Answer

Elastic collisions of gas molecules

Answer

Different molar mass

Answer

Non-polar nature of gases

Answer

Pressure of dust particles in air

Question 37

37. The example of hexagonal system is

Question 38

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

Question 39

39. Solvent extraction is mostly applied to separate

Answer

Organic compounds

Answer

None of these

Answer

Both A and B

Answer

Inorganic compounds

Question 40

40. 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

2 liter atm

Answer

1 liter atm

Answer

3 liter atm

Question 41

41. Under what conditions real gases deviate from ideal behavior

Answer

Low temperature

Answer

Both b and c

Answer

High pressure

Answer

High temperature

Question 42

42. 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 43

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

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

Answer

Decreased volume of the solution

Question 44

44. Which of the following statements is (are correct)?

Answer

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

Answer

None of these

Answer

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

Answer

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

Question 45

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

Answer

Moderately

Question 46

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

Answer

Increase in potential energy of molecules

Answer

Decrease of surface tension

Answer

Increase of intermolecular interactions

Answer

Increase of K.E of molecules

Question 47

47. 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

5 mL of 0.1 M

Answer

10 mL of 0.5 M

Answer

10 mL of 0.1 M

Question 48

48. Crystalline solids can be identified easily by their

Answer

Definite geometry

Answer

Transition temperature

Answer

All of these

Question 49

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

Answer

Isomorphism

Answer

None of these

Answer

Polymorphism

Question 50

50. Crystalline solids can be identified easily from their

Answer

Transition temperature

Answer

Sharp melting point

Answer

Definite geometry

Question 51

51. Isomorphic substance have

Answer

Different physical and chemical properties

Answer

Different physical and same chemical properties

Answer

Same physical and difference chemical properties

Answer

Same physical and chemical properties

Question 52

52. Which of the following substances is not amorphous?

Question 53

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

Answer

H₂O and H⁺

Answer

NH₃ and BF₃

Answer

CH₄ and AlCl₃

Answer

NH₃ and H⁺

Question 54

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

Answer

Electrostatic force

Answer

Non covalent bond force

Answer

Electrical attraction

Answer

Covalent bond

Question 55

55. Which is trigonal crystal?

Answer

CaSO₄.2H₂O

Question 56

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

Answer

44.8 dm3 CO₂ at S.T.P

Answer

6 moles of S

Answer

20 moles of S8

Answer

5.0 moles of SO₂

Question 57

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

Answer

3.0115 x 10 ²⁴

Answer

1.5057 x 10 ²⁴

Answer

4.0956 x 10 ²⁴

Answer

2.0478 x 10 ²⁴

Question 58

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

Answer

Tetrahedron

Answer

Octahedron

Question 59

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

Answer

Free valence electrons

Answer

Ione pair of electrons

Question 60

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

Answer

Anisotropy

Answer

Isomorphism

Answer

Polymorphism

Question 61

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

Question 62

62. 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 63

63. Super conductors are derived from compounds of

Answer

Lanthanides

Answer

p-block elements

Answer

Transition elements

Question 64

64. Van der Waal’s forces exist in

Answer

All types of atoms and molecules

Answer

Polar compounds

Answer 149

Gas < liquid < solid

Answer 150

Liquid < gas < solid

Answer 151

Gas = liquid = solid

Answer 152

Gas < liquid < solid

Answer 153

Isomorphous crystals

Answer 154

Allotropic crystal

Answer 155

Isomeric crystals

Answer 156

Liquid Crystals

Answer 157

-10°C and 2.0 atm

Answer 158

100°C and 2.0 atm

Answer 159

-10°C and 5.0 atm

Answer 160

0°C and 2.0 atm

Answer 161

Monoclinic

Answer 162

Tetragonal

Answer 163

159 g/Cm²

Answer 164

159 mm Hg.

Answer 165

To dissolve large amount of substance at its boiling point

Answer 166

Increasing the rate of filtration

Answer 167

To avoid premature crystallization of the solute

Answer 168

Filtering the hot saturated solution

Answer 169

22.4 liters

Answer 170

11.2 liters

Answer 171

2.24 liters

Answer 172

Diatic bond

Answer 173

Ionic compounds

Answer 174

Covalent bonds

Answer 175

Metallic bonds

Answer 176

22.4 liter

Answer 177

2.24 liter

Answer 178

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

Answer 179

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

Answer 180

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

Answer 181

Gases do not have a definite shape and volume

Answer 182

None of these

Answer 183

Liquid crystals

Answer 184

Solid crystals

Answer 185

Ionic crystals

Answer 186

Repeated extraction and small portion of solvent

Answer 187

Single extraction and large portion of solvent

Answer 188

Single extraction and small portion of solvent

Answer 189

Repeated extraction and large portion of solvent

Answer 190

Sulphuric acid

Answer 191

Chloroform

Answer 192

Acetic acid

Answer 193

Valence electrons

Answer 194

Miller indices

Answer 195

Volume of O₂ required is 25 dm³

Answer 196

Volume of O₂ required is 50 dm³

Answer 197

Volume of CO₂ formed is 60 dm³

Answer 198

Volume of CO₂ formed is 25 dm³

Answer 199

A and B evaporates at the same rate

Answer 200

B evaporates less readily than C

Answer 201

A evaporates more readily than C

Answer 202

B evaporates more readily than A

Answer 203

Allotropes

Answer 204

Isoelectronic

Answer 205

Y B₂Cu₃O₇

Answer 206

Y Ba₂Cu₃O₇

Answer 207

Yb Ba₂Cu₂O₈

Answer 208

Hg Be₂Ca₂Cu₂O₈

Answer 209

AB₂ type ionic compound

Answer 210

NaCl type structure

Answer 211

ZnS type structure

Answer 212

CsCl type structure

Answer 213

Little bit less than the molar volumes of solids

Answer 214

Little bit greater than the molar volumes of liquid

Answer 215

About the same as the molar volumes of liquids

Answer 216

Much larger than the molar volumes of liquids and solids

Answer 217

Boyle’s law

Answer 218

Dalton’s law

Answer 219

Charles’ law

Answer 220

Graham’s law

Answer 221

CO₂ is 1.25 times faster than CO

Answer 222

Both diffused at the same time

Answer 223

CO is 1.25 times faster than CO₂

Answer 224

CO is 3.75 times faster than CO₂

Answer 225

A gas is liberated

Answer 226

Oxide of the gas is strongly acidic

Answer 227

Colour of the gas is greenish yellow

Answer 228

The gas is chlorine

Answer 229

The carbon atoms are arranged layers

Answer 230

The coordination number of carbon atoms is 4

Answer 231

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

Answer 232

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

Answer 233

Sharp melting points

Answer 234

No definite heat of fusion

Answer 235

Sharp B.P.

Answer 236

Definite heat of fusion

Answer 237

14 crystal systems

Answer 238

7 crystal systems

Answer 239

4 crystal systems

Answer 240

3 crystal systems

Answer 241

They are anisotropic

Answer 242

There is no orderly arrangement of particles

Answer 243

There are rigid and in-compressible

Answer 244

They melt over a range of temperature

Answer 245

Converted into wires

Answer 246

Converted into sheets

Answer 247

All of these

Answer 248

Melted easily

Answer 249

101.325 Pa

Answer 250

8.5 Pounds

Answer 251

Gets a double positive charge

Answer 252

Gets a single negative charge

Answer 253

Gets a single positive charge

Answer 254

Gets a double negative charge

Answer 255

Is changed by about 26%

Answer 256

Is unchanged

Answer 257

Change by 33%

Answer 258

He will feel cool

Answer 259

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

Answer 260

His blood pressure will increase

Answer 261

He will feel warmth

Answer 262

Tetra chloromethane

Answer 263

Isomorphism

Answer 264

Crystalline forms

Answer 265

Isotopic form

Answer 266

Covalent compounds

Answer 267

Metallic compounds

Answer 268

Ionic compounds

Answer 269

Diatic bonds

Answer 270

790 mm of Hg

Answer 271

100 mm of Hg

Answer 272

700 mm of Hg

Answer 273

1489 mm of Hg

Answer 274

Covalent solids

Answer 275

Ionic solids

Answer 276

Pseudo solids

Answer 277

Molecular solids

Answer 278

Na(g) → N²⁺ (g) + +¯

Answer 279

Na(s) → N²⁺ (g) + e¯

Answer 280

Na(g) → N²⁺ (g) + e¯

Answer 281

Na(s) → N²⁺ (g) + 2e¯

Answer 282

15 atm, and 200 K

Answer 283

0.5 atm, and 500 K

Answer 284

1 atm, and 273 K

Answer 285

15 tm, and 500 K

Answer 286

1.4 x 10¯²¹ g

Answer 287

5.01 x 10¯²¹ g

Answer 288

1.3 x 10¯²⁰ g

Answer 289

3.72 x 10¯²³ g

Answer 290

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 291

8.31 L atm K¯¹ mol¯¹

Answer 292

8.31 JK¯¹ mol¯¹

Answer 293

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 294

Super-cooled liquid

Answer 295

None of these

Answer 296

Micro-crystalline solid

Answer 297

One mole of NH₃ will produce ½ mole of N₂

Answer 298

One mole of NH₃ will produce 6 moles of N₂

Answer 299

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

Answer 300

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

Answer 301

Molecules are in chaotic motion

Answer 302

All molecular collisions are elastic

Answer 303

Molecules of all the gases have same size and same mass

Answer 304

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

Answer 305

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

Answer 306

At high pressure, the intermolecular attraction becomes significant

Answer 307

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

Answer 308

A high pressure, the volume of the gas becomes insignificant

Answer 309

nλ = 1/2d sin θ

Answer 310

2nλ = d sin θ

Answer 311

nλ = 2 d sin θ

Answer 312

nλ = 2 θ sin θ

Answer 313

The filtrate is quick

Answer 314

Filtrate runs down without crystals

Answer 315

This gives medium size crystals

Answer 316

This gives bigger size crystals

Answer 317

Monoclinic

Answer 318

Isotropical

Answer 319

Rhombohedral

Answer 320

Vaporization

Answer 321

Sublimation

Answer 322

Filtration

Answer 323

Condensation

Answer 324

Chemical properties

Answer 325

Arrangement of electrons in orbitals

Answer 326

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

Answer 327

Properties which depend upon mass

Answer 328

Liquid H₂

Answer 329

Liquid CO₂

Answer 330

Liquid O₂

Answer 331

Liquid N₂

Answer 332

A, B and C

Answer 333

Hexagonal manner

Answer 334

Tetrahedral manner

Answer 335

Square planner manner

Answer 336

Altahydral manner

Answer 337

Divalent impurity

Answer 338

Tetravalent

Answer 339

Trivalent impurity

Answer 340

Pentavalent impurity

Answer 341

Increase two fold

Answer 342

Remains unchanged

Answer 343

Be a function of the molecular mass of substance

Answer 344

Decrease twice

Answer 345

Orthogonal lattice

Answer 346

Cubic lattice

Answer 347

Ortho rhombic lattice

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