Chemistry Liquids and Solids Online Mcqs Test

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Question 1

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

Question 2

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

Answer

Polymorphism

Answer

Isomorphism

Answer

None of these

Question 3

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

Answer

Acetic acid

Answer

Chloroform

Answer

Sulphuric acid

Question 4

4. The material possessing superconducting properties is

Answer

Y B₂Cu₃O₇

Answer

Yb Ba₂Cu₂O₈

Answer

Y Ba₂Cu₃O₇

Answer

Hg Be₂Ca₂Cu₂O₈

Question 5

5. Repeatable entity of a crystal structure is known as

Answer

Miller indices

Question 6

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

Question 7

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

Answer

NaCl type structure

Answer

AB₂ type ionic compound

Answer

ZnS type structure

Answer

CsCl type structure

Question 8

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

Question 9

9. 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 10

10. Super conductors are derived from compounds of

Answer

Transition elements

Answer

p-block elements

Answer

Lanthanides

Question 11

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

Question 12

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

Answer

Crystallization

Answer

Solvent extraction

Answer

Chromatography

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 dilute acid to the mixture and filter

Answer

Heat the mixture and allow it to cool

Answer

Add water to the mixture and filter

Answer

Place the mixture in a separating funnel

Question 14

14. 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

B evaporates more readily than A

Answer

A evaporates more readily than C

Question 15

15. 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

Isomeric crystals

Answer

Allotropic crystal

Answer

Isomorphous crystals

Question 16

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

Answer

Ascending paper chromatography

Answer

Descending paper chromatography

Answer

Liquid solid chromatography

Answer

Liquid gas chromatography

Question 17

17. 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

Be a function of the molecular mass of substance

Answer

Increase two fold

Answer

Remains unchanged

Answer

Decrease twice

Question 18

18. Simple molecules or giant macromolecules are examples of

Answer

Diatic bond

Answer

Metallic bonds

Answer

Ionic compounds

Answer

Covalent bonds

Question 19

19. 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) + e¯

Answer

Na(s) → N²⁺ (g) + 2e¯

Question 20

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

Answer

Normal filter paper

Answer

Fluted filter paper

Answer

Both A & B

Question 21

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

Answer

Moderately

Question 22

22. 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 23

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

Question 24

24. A solid may be made up of

Answer

A, B and C

Question 25

25. Poor conductors of electricity is a characteristic of

Answer

Diatic bonds

Answer

Covalent compounds

Answer

Ionic compounds

Answer

Metallic compounds

Question 26

26. 3.2 g of oxygen (At. Wt. = 16) and 0.2 g of hydrogen (At. Wt. = 1) are placed in a 1.12 L flask at 0°C. The total pressure of the gas mixture will be

Question 27

27. Amorphous substance posses

Answer

No definite geometry

Answer

No definite heat of fusion

Answer

All of these

Answer

No sharp melting points

Question 28

28. Glass is a

Answer

Micro-crystalline solid

Answer

None of these

Answer

Super-cooled liquid

Question 29

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

Question 30

30. 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 31

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

Question 32

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

Question 33

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

Answer

Isomorphism

Answer

Anisotropy

Answer

Polymorphism

Question 34

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

Answer

None of these

Answer

Both fcc and bcc

Question 35

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

Answer

700 mm of Hg

Answer

100 mm of Hg

Answer

1489 mm of Hg

Answer

790 mm of Hg

Question 36

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

Answer

High solubility

Answer

Low temperature

Answer

High ignition temperature

Answer

High concentration

Question 37

37. 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 38

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

Question 39

39. Solvent extraction is mostly applied to separate

Answer

Inorganic compounds

Answer

Organic compounds

Answer

Both A and B

Answer

None of these

Question 40

40. 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 41

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

Answer

The filtrate is quick

Answer

This gives medium size crystals

Answer

Filtrate runs down without crystals

Answer

This gives bigger size crystals

Question 42

42. Crystalline solids can be identified easily by their

Answer

Transition temperature

Answer

Definite geometry

Answer

All of these

Question 43

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

Question 44

44. Which of the following is a pseudo solid?

Question 45

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

Question 46

46. A malleable solid is one which can be

Answer

Melted easily

Answer

Converted into sheets

Answer

Converted into wires

Answer

All of these

Question 47

47. Amorphous substances possess

Answer

Sharp B.P.

Answer

Sharp melting points

Answer

Definite heat of fusion

Answer

No definite heat of fusion

Question 48

48. Bragg’s law is given by equation

Answer

nλ = 1/2d sin θ

Answer

nλ = 2 θ sin θ

Answer

2nλ = d sin θ

Answer

nλ = 2 d sin θ

Question 49

49. 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 less than the molar volumes of solids

Answer

Little bit greater than the molar volumes of liquid

Question 50

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

Answer

Trivalent impurity

Answer

Pentavalent impurity

Answer

Divalent impurity

Answer

Tetravalent

Question 51

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

Answer

Having wide spaces

Answer

Causing pressure

Answer

Orderly arranged

Answer

Randomly moving

Question 52

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

Answer

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

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

Question 53

53. 4.4 g of CO₂ contains how many liters of CO₂ at STP?

Answer

2.24 liter

Answer

22.4 liter

Question 54

54. Formation of a cation is?

Question 55

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

Answer

Hexagonal manner

Answer

Altahydral manner

Answer

Square planner manner

Answer

Tetrahedral manner

Question 56

56. 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 57

57. 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

Change by 33%

Answer

Is changed by about 26%

Question 58

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

Answer

2 x 6.02 x 10²³

Answer

6.02 x 10²³

Answer

4 x 6.02 x 10²³

Answer

3/2 x 6.02 x 10²³

Question 59

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

Answer

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

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

Question 60

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

Answer

159 mm Hg.

Answer

159 g/Cm²

Question 61

61. 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

2.24 liters

Answer

11.2 liters

Question 62

62. ‘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 63

63. Fluted filter paper is used for

Answer

To avoid premature crystallization of the solute

Answer

Filtering the hot saturated solution

Answer

Increasing the rate of filtration

Answer

To dissolve large amount of substance at its boiling point

Question 64

64. Crystalline solids can be identified easily from their

Answer

Transition temperature

Answer

Definite geometry

Answer

Sharp melting point

Answer 156

CO₂ is 1.25 times faster than CO

Answer 157

Both diffused at the same time

Answer 158

CO is 1.25 times faster than CO₂

Answer 159

CO is 3.75 times faster than CO₂

Answer 160

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

Answer 161

Decreased volume of the solution

Answer 162

Increased attraction between the molecules

Answer 163

Decreased covalent and hydrogen bond forces

Answer 164

Sublimation

Answer 165

Condensation

Answer 166

Filtration

Answer 167

Vaporization

Answer 168

3.72 x 10¯²³ g

Answer 169

5.01 x 10¯²¹ g

Answer 170

1.3 x 10¯²⁰ g

Answer 171

1.4 x 10¯²¹ g

Answer 172

Crystalline

Answer 173

Dalton’s law

Answer 174

Charles’ law

Answer 175

Graham’s law

Answer 176

Boyle’s law

Answer 177

Monoclinic

Answer 178

Isotropical

Answer 179

Rhombohedral

Answer 180

None of these

Answer 181

Tetra chloromethane

Answer 182

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

Answer 183

A high pressure, the volume of the gas becomes insignificant

Answer 184

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

Answer 185

At high pressure, the intermolecular attraction becomes significant

Answer 186

High temperature

Answer 187

High pressure

Answer 188

Both b and c

Answer 189

Low temperature

Answer 190

Relative abundance

Answer 191

Number of isotopes

Answer 192

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

Answer 193

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

Answer 194

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

Answer 195

None of these

Answer 196

Ione pair of electrons

Answer 197

Free valence electrons

Answer 198

Solid crystals

Answer 199

Ionic crystals

Answer 200

None of these

Answer 201

Liquid crystals

Answer 202

Volume of CO₂ formed is 25 dm³

Answer 203

Volume of CO₂ formed is 60 dm³

Answer 204

Volume of O₂ required is 25 dm³

Answer 205

Volume of O₂ required is 50 dm³

Answer 206

558.5 x 6.022 x 10²³

Answer 207

Twice that in 60 g carbon

Answer 208

6.022 x 10²²

Answer 209

Half that in 8 g of He

Answer 210

Increase of K.E of molecules

Answer 211

Increase in potential energy of molecules

Answer 212

Increase of intermolecular interactions

Answer 213

Decrease of surface tension

Answer 214

1 mole of S

Answer 215

7.0 g of Ag.

Answer 216

3 x 10²³ atoms of C

Answer 217

2 gram atom of nitrogen

Answer 218

C₆H₁₀O₄

Answer 219

C₃H₁₀O₂

Answer 220

C₃H₅O₂

Answer 221

C₄H₁₀O₂

Answer 222

NH₃ and H⁺

Answer 223

NH₃ and BF₃

Answer 224

H₂O and H⁺

Answer 225

CH₄ and AlCl₃

Answer 226

Monoclimic

Answer 227

Cubic lattice

Answer 228

Orthogonal lattice

Answer 229

Ortho rhombic lattice

Answer 230

Molecules are in chaotic motion

Answer 231

Molecules of all the gases have same size and same mass

Answer 232

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

Answer 233

All molecular collisions are elastic

Answer 234

He will feel warmth

Answer 235

He will feel cool

Answer 236

His blood pressure will increase

Answer 237

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

Answer 238

3 liter atm

Answer 239

2 liter atm

Answer 240

1 liter atm

Answer 241

273°C and 2 atm

Answer 242

S.T.P (0°C and 1 atm)

Answer 243

0°C and 2 atm

Answer 244

127°C and 1 atm

Answer 245

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

Answer 246

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

Answer 247

One mole of NH₃ will produce ½ mole of N₂

Answer 248

One mole of NH₃ will produce 6 moles of N₂

Answer 249

Non covalent bond force

Answer 250

Electrostatic force

Answer 251

Covalent bond

Answer 252

Electrical attraction

Answer 253

Polymorphism

Answer 254

Isomorphism

Answer 255

Anisotropy

Answer 256

Liquid H₂

Answer 257

Liquid O₂

Answer 258

Liquid CO₂

Answer 259

Liquid N₂

Answer 260

Gets a single positive charge

Answer 261

Gets a single negative charge

Answer 262

Gets a double negative charge

Answer 263

Gets a double positive charge

Answer 264

Low melting points

Answer 265

Solubility in polar solvents

Answer 266

Good conductivity in solid state

Answer 267

High vapour pressures

Answer 268

Single extraction and small portion of solvent

Answer 269

Repeated extraction and large portion of solvent

Answer 270

Single extraction and large portion of solvent

Answer 271

Repeated extraction and small portion of solvent

Answer 272

3 crystal systems

Answer 273

4 crystal systems

Answer 274

14 crystal systems

Answer 275

7 crystal systems

Answer 276

Gas < liquid < solid

Answer 277

Gas = liquid = solid

Answer 278

Liquid < gas < solid

Answer 279

Gas < liquid < solid

Answer 280

Valence electrons

Answer 281

The gas is chlorine

Answer 282

A gas is liberated

Answer 283

Colour of the gas is greenish yellow

Answer 284

Oxide of the gas is strongly acidic

Answer 285

Charles’ law

Answer 286

Boyle’s law

Answer 287

Dalton’s law

Answer 288

Avogadro’s law

Answer 289

20 moles of S8

Answer 290

6 moles of S

Answer 291

44.8 dm3 CO₂ at S.T.P

Answer 292

5.0 moles of SO₂

Answer 293

None of these

Answer 294

Covalent solids

Answer 295

Pseudo solids

Answer 296

Ionic solids

Answer 297

Molecular solids

Answer 298

CaSO₄.2H₂O

Answer 299

8.5 Pounds

Answer 300

101.325 Pa

Answer 301

1.5057 x 10 ²⁴

Answer 302

4.0956 x 10 ²⁴

Answer 303

2.0478 x 10 ²⁴

Answer 304

3.0115 x 10 ²⁴

Answer 305

Tetragonal

Answer 306

Monoclinic

Answer 307

Different physical and same chemical properties

Answer 308

Same physical and different chemical properties

Answer 309

Same physical and chemical properties

Answer 310

Different physical and chemical properties

Answer 311

15 tm, and 500 K

Answer 312

15 atm, and 200 K

Answer 313

0.5 atm, and 500 K

Answer 314

1 atm, and 273 K

Answer 315

8.31 x 10⁷ erg³ K¯¹ mol¯¹

Answer 316

8.31 x 10⁷ dynes Cm K¯¹ mol¯¹

Answer 317

8.31 L atm K¯¹ mol¯¹

Answer 318

8.31 JK¯¹ mol¯¹

Answer 319

10 mL of 0.02 M

Answer 320

10 mL of 0.1 M

Answer 321

10 mL of 0.5 M

Answer 322

5 mL of 0.1 M

Answer 323

They are anisotropic

Answer 324

There is no orderly arrangement of particles

Answer 325

They melt over a range of temperature

Answer 326

There are rigid and in-compressible

Answer 327

Isomorphism

Answer 328

Crystalline forms

Answer 329

Isotopic form

Answer 330

All types of atoms and molecules

Answer 331

Polar compounds

Answer 332

Different physical and chemical properties

Answer 333

Same physical and difference chemical properties

Answer 334

Same physical and chemical properties

Answer 335

Different physical and same chemical properties

Answer 336

Chemical properties

Answer 337

Properties which depend upon mass

Answer 338

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

Answer 339

Arrangement of electrons in orbitals

Answer 340

Allotropes

Answer 341

Isoelectronic

Answer 342

Tetrahedron

Answer 343

Octahedron

Answer 344

-10°C and 2.0 atm

Answer 345

0°C and 2.0 atm

Answer 346

100°C and 2.0 atm

Answer 347

-10°C and 5.0 atm

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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