Chemistry Liquids and Solids Online Mcqs Test

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Question 1

1. Among solids, the highest melting point is exhibited by

Answer

Pseudo solids

Answer

Molecular solids

Answer

Covalent solids

Answer

Ionic solids

Question 2

2. 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 3

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

Question 4

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

Question 7

7. 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 50 dm³

Answer

Volume of CO₂ formed is 60 dm³

Answer

Volume of O₂ required is 25 dm³

Question 8

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

Question 9

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

Answer

Isomorphism

Answer

None of these

Answer

Polymorphism

Question 10

10. The allotropic forms of an element are called

Answer

Allotropes

Answer

Isoelectronic

Question 11

11. 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 12

12. 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 less readily than C

Answer

A evaporates more readily than C

Answer

B evaporates more readily than A

Question 13

13. 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

Descending paper chromatography

Answer

Ascending paper chromatography

Answer

Liquid solid chromatography

Question 14

14. 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 15

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

Answer

None of these

Answer

Both fcc and bcc

Question 16

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

Question 17

17. A malleable solid is one which can be

Answer

Converted into wires

Answer

Melted easily

Answer

Converted into sheets

Answer

All of these

Question 18

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

Answer

None of these

Answer

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

Answer

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

Answer

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

Question 19

19. 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

3.0115 x 10 ²⁴

Answer

1.5057 x 10 ²⁴

Question 20

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

Answer

CsCl type structure

Answer

ZnS type structure

Answer

AB₂ type ionic compound

Answer

NaCl type structure

Question 21

21. In case of elements the polymorphism is called

Answer

Crystalline forms

Answer

Isotopic form

Answer

Isomorphism

Question 22

22. 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

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

Question 23

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

Answer

This gives bigger size crystals

Answer

Filtrate runs down without crystals

Answer

This gives medium size crystals

Answer

The filtrate is quick

Question 24

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

Answer

Ione pair of electrons

Answer

Free valence electrons

Question 25

25. 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 26

26. 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 27

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

Question 28

28. 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 29

29. 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 30

30. Correct order of intermolecular forces

Answer

Gas = liquid = solid

Answer

Gas < liquid < solid

Answer

Liquid < gas < solid

Answer

Gas < liquid < solid

Question 31

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

Question 32

32. The example of hexagonal system is

Question 33

33. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

Answer

22.4 liter

Answer

2.24 liter

Question 34

34. Ionic solids are characterized by

Answer

High vapour pressures

Answer

Solubility in polar solvents

Answer

Low melting points

Answer

Good conductivity in solid state

Question 35

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

Question 36

36. Wt. of 112 ml of oxygen at STP on liquefaction would be

Question 37

37. The most efficient solvent extraction method is by using

Answer

Repeated extraction and large portion of solvent

Answer

Single extraction and large portion of solvent

Answer

Repeated extraction and small portion of solvent

Answer

Single extraction and small portion of solvent

Question 38

38. Van der Waal’s forces exist in

Answer

All types of atoms and molecules

Answer

Polar compounds

Question 39

39. 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 40

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

Answer

Gets a double negative charge

Answer

Gets a double positive charge

Answer

Gets a single positive charge

Answer

Gets a single negative charge

Question 41

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

Question 42

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

Answer

Moderately

Question 43

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

Answer

They melt over a range of temperature

Answer

There are rigid and in-compressible

Answer

There is no orderly arrangement of particles

Answer

They are anisotropic

Question 44

44. 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 45

45. ‘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 46

46. 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

2.24 liters

Answer

22.4 liters

Answer

11.2 liters

Question 47

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

Question 48

48. 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 49

49. 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 50

50. The following statements contained in a student’s laboratory report is a conclusion

Answer

Colour of the gas is greenish yellow

Answer

A gas is liberated

Answer

Oxide of the gas is strongly acidic

Answer

The gas is chlorine

Question 51

51. Particles that most effects material properties

Answer

Valence electrons

Question 52

52. Which of the following substances is not amorphous?

Question 53

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

Answer

Electrical attraction

Answer

Electrostatic force

Answer

Non covalent bond force

Answer

Covalent bond

Question 54

54. Which of the following is isotropic

Question 55

55. Which of the following are more temperature sensitive?

Answer

Liquid crystals

Answer

None of these

Answer

Solid crystals

Answer

Ionic crystals

Question 56

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

Answer

Decreased volume of the solution

Answer

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

Answer

Increased attraction between the molecules

Answer

Decreased covalent and hydrogen bond forces

Question 57

57. Which of the following is a pseudo solid?

Question 58

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

Question 59

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

Answer

None of these

Question 60

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

Answer

Avogadro’s law

Answer

Boyle’s law

Answer

Dalton’s law

Answer

Charles’ law

Question 61

61. 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 62

62. The crystal structure having face centered cubic arrangement is

Question 63

63. Crystalline solids can be identified easily by their

Answer

All of these

Answer

Definite geometry

Answer

Transition temperature

Question 64

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

Answer 143

Non-polar nature of gases

Answer 144

Elastic collisions of gas molecules

Answer 145

Pressure of dust particles in air

Answer 146

Different molar mass

Answer 147

Add water to the mixture and filter

Answer 148

Heat the mixture and allow it to cool

Answer 149

Add dilute acid to the mixture and filter

Answer 150

Place the mixture in a separating funnel

Answer 151

CO is 1.25 times faster than CO₂

Answer 152

Both diffused at the same time

Answer 153

CO is 3.75 times faster than CO₂

Answer 154

CO₂ is 1.25 times faster than CO

Answer 155

Anisotropy

Answer 156

Isomorphism

Answer 157

Polymorphism

Answer 158

159 mm Hg.

Answer 159

159 g/Cm²

Answer 160

Monoclinic

Answer 161

Tetragonal

Answer 162

Y B₂Cu₃O₇

Answer 163

Y Ba₂Cu₃O₇

Answer 164

Hg Be₂Ca₂Cu₂O₈

Answer 165

Yb Ba₂Cu₂O₈

Answer 166

Ionic compounds

Answer 167

Covalent bonds

Answer 168

Diatic bond

Answer 169

Metallic bonds

Answer 170

Tetra chloromethane

Answer 171

Miller indices

Answer 172

Solvent extraction

Answer 173

Crystallization

Answer 174

Chromatography

Answer 175

Relative abundance

Answer 176

Number of isotopes

Answer 177

Lanthanides

Answer 178

Transition elements

Answer 179

p-block elements

Answer 180

Monoclimic

Answer 181

8.31 JK¯¹ mol¯¹

Answer 182

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 183

8.31 L atm K¯¹ mol¯¹

Answer 184

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 185

Properties which depend upon mass

Answer 186

Arrangement of electrons in orbitals

Answer 187

Chemical properties

Answer 188

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

Answer 189

Anisotropy

Answer 190

Polymorphism

Answer 191

Isomorphism

Answer 192

Vaporization

Answer 193

Filtration

Answer 194

Sublimation

Answer 195

Condensation

Answer 196

No sharp melting points

Answer 197

No definite geometry

Answer 198

All of these

Answer 199

No definite heat of fusion

Answer 200

7.0 g of Ag.

Answer 201

2 gram atom of nitrogen

Answer 202

3 x 10²³ atoms of C

Answer 203

1 mole of S

Answer 204

2 x 6.02 x 10²³

Answer 205

4 x 6.02 x 10²³

Answer 206

6.02 x 10²³

Answer 207

3/2 x 6.02 x 10²³

Answer 208

Crystalline

Answer 209

Orderly arranged

Answer 210

Having wide spaces

Answer 211

Randomly moving

Answer 212

Causing pressure

Answer 213

Is unchanged

Answer 214

Change by 33%

Answer 215

Is changed by about 26%

Answer 216

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

Answer 217

Gases do not have a definite shape and volume

Answer 218

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

Answer 219

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

Answer 220

Sharp melting points

Answer 221

No definite heat of fusion

Answer 222

Definite heat of fusion

Answer 223

Sharp B.P.

Answer 224

Sulphuric acid

Answer 225

Acetic acid

Answer 226

Chloroform

Answer 227

Covalent compounds

Answer 228

Diatic bonds

Answer 229

Metallic compounds

Answer 230

Ionic compounds

Answer 231

CaSO₄.2H₂O

Answer 232

Both A and B

Answer 233

Inorganic compounds

Answer 234

Organic compounds

Answer 235

None of these

Answer 236

None of these

Answer 237

Super-cooled liquid

Answer 238

Micro-crystalline solid

Answer 239

Low temperature

Answer 240

High ignition temperature

Answer 241

High solubility

Answer 242

High concentration

Answer 243

100 mm of Hg

Answer 244

700 mm of Hg

Answer 245

1489 mm of Hg

Answer 246

790 mm of Hg

Answer 247

Altahydral manner

Answer 248

Tetrahedral manner

Answer 249

Hexagonal manner

Answer 250

Square planner manner

Answer 251

Molecules are in chaotic motion

Answer 252

All molecular collisions are elastic

Answer 253

Molecules of all the gases have same size and same mass

Answer 254

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

Answer 255

Allotropic crystal

Answer 256

Isomeric crystals

Answer 257

Liquid Crystals

Answer 258

Isomorphous crystals

Answer 259

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

Answer 260

One mole of NH₃ will produce ½ mole of N₂

Answer 261

One mole of NH₃ will produce 6 moles of N₂

Answer 262

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

Answer 263

Liquid O₂

Answer 264

Liquid H₂

Answer 265

Liquid CO₂

Answer 266

Liquid N₂

Answer 267

The carbon atoms are arranged layers

Answer 268

The coordination number of carbon atoms is 4

Answer 269

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

Answer 270

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

Answer 271

Different physical and same chemical properties

Answer 272

Same physical and chemical properties

Answer 273

Different physical and chemical properties

Answer 274

Same physical and difference chemical properties

Answer 275

nλ = 2 d sin θ

Answer 276

nλ = 1/2d sin θ

Answer 277

nλ = 2 θ sin θ

Answer 278

2nλ = d sin θ

Answer 279

Pentavalent impurity

Answer 280

Divalent impurity

Answer 281

Trivalent impurity

Answer 282

Tetravalent

Answer 283

10 mL of 0.1 M

Answer 284

5 mL of 0.1 M

Answer 285

10 mL of 0.5 M

Answer 286

10 mL of 0.02 M

Answer 287

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

Answer 288

A high pressure, the volume of the gas becomes insignificant

Answer 289

At high pressure, the intermolecular attraction becomes significant

Answer 290

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

Answer 291

Increase of intermolecular interactions

Answer 292

Increase of K.E of molecules

Answer 293

Increase in potential energy of molecules

Answer 294

Decrease of surface tension

Answer 295

C₃H₅O₂

Answer 296

C₆H₁₀O₄

Answer 297

C₃H₁₀O₂

Answer 298

C₄H₁₀O₂

Answer 299

7 crystal systems

Answer 300

14 crystal systems

Answer 301

3 crystal systems

Answer 302

4 crystal systems

Answer 303

Both A & B

Answer 304

Fluted filter paper

Answer 305

Normal filter paper

Answer 306

Increase two fold

Answer 307

Decrease twice

Answer 308

Be a function of the molecular mass of substance

Answer 309

Remains unchanged

Answer 310

A, B and C

Answer 311

3 liter atm

Answer 312

2 liter atm

Answer 313

1 liter atm

Answer 314

Definite geometry

Answer 315

Transition temperature

Answer 316

Sharp melting point

Answer 317

3.72 x 10¯²³ g

Answer 318

5.01 x 10¯²¹ g

Answer 319

1.3 x 10¯²⁰ g

Answer 320

1.4 x 10¯²¹ g

Answer 321

NH₃ and H⁺

Answer 322

NH₃ and BF₃

Answer 323

H₂O and H⁺

Answer 324

CH₄ and AlCl₃

Answer 325

Octahedron

Answer 326

Tetrahedron

Answer 327

101.325 Pa

Answer 328

8.5 Pounds

Answer 329

Na(g) → N²⁺ (g) + +¯

Answer 330

Na(g) → N²⁺ (g) + e¯

Answer 331

Na(s) → N²⁺ (g) + e¯

Answer 332

Na(s) → N²⁺ (g) + 2e¯

Answer 333

Orthogonal lattice

Answer 334

Cubic lattice

Answer 335

Ortho rhombic lattice

Answer 336

Rhombohedral

Answer 337

Monoclinic

Answer 338

Isotropical

Answer 339

Charles’ law

Answer 340

Graham’s law

Answer 341

Boyle’s law

Answer 342

Dalton’s law

Answer 343

High temperature

Answer 344

Both b and c

Answer 345

Low temperature

Answer 346

High pressure

Answer 347

None of these

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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