20 litres of hydrogen gas weighs about

Question

20 litres of hydrogen gas weighs about

A. 1.8 g

B. 3.6 g

C. 224 g

D. 12.2 g

Correct Answer :

A. 1.8 g

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At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?

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5.At a given temperature and pressure 2 volumes of A combine with 5 volumes of B to form 2 volmes of C and 1 volume. A combine with one volume of B to form 2 volumes of D. The formula of C is

D. $A B_{5}$

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The vol. of 20 gms of nitrogen at N.T.P.

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Kinetic theory of gases postulates :

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In a unit cell of cesium chloride the arrangement of cesium ions is

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In a dose packed arrangement of N spheres, the number of tetrahedral holes are

A. N

B. 2N

C. N/2

D. $N_{2}$

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Chloroform and benzene form a pair of miscible liquids. These can be separated by

Discuss this answer

When there is more deviation in the behaviour of a gas from ideal gas equation PV = nRT

Discuss this answer

The number of tetrahedral and octahedral voids per atom in a crystal lattice are, respectively

A. 1,1

B. 2,2

C. 2,1

D. 2,6

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Absolute zero is the temperature at which

Discuss this answer

In the gas equation PV = xT, x is a constant. The value of the constant depends upon

Discuss this answer

According to Avogadro's hypothesis equal volumes of two gases under the same conditions of temperature and pressure contain

Discuss this answer

The number of atoms per unit cell in bcc arrangement is

A. 1

B. 4

C. 3

D. 2

Discuss this answer

Certain volume of a gas exerts on its walls some pressure at a particular temperature. It has been found that by reducing the volume of the gas to half its original value, the pressure becomes I twice that the initial value of constant temperature. This happens because

Discuss this answer

The vapour density of completely dissociated sociated $N H_{4} C L$ would be

Discuss this answer

The critical temperature of a substance is defined as

Discuss this answer

Indicate the most viscous liquid of the following

Discuss this answer

Avogadro stated that under similar conditions of temperature and pressure equal volumes of all gases contain equal number of

A. atoms

D. ions

Discuss this answer

An open vessel at 37°C is heated until 3/5 of the air in it has been expelled. Assuming that the volume of the vessel remains constant the temperature to which the vessel is heated is

A. 502°C

B. 502 K

D. 925C

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A vessel containing 10 litre of air at atmospheric pressure is connected to an evacuated 9 litre vessel The resulting pressure will be

A. 2 atm

B. 31 atm

Discuss this answer

7.Which of the following sets of conditions represent the easiest way to liquefy a gas?

Discuss this answer

What is the vapour pressure of benzoyl chloride at its boiling point (197°C)?

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Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by methane is

A. 1/2

B. 1/3

C. 1/9

D. 8/9

Discuss this answer

Which of the following statement wrong?

Discuss this answer

Which of the following contains the same number of atoms as 12 gms: of Magnesium (Atomic weights : Mg = 24, C = 12, Ca = 40)

Discuss this answer

Four 1 litre flasks are separately filled with hydrogen, helium, oxygen and ozone gases at the same temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be

Discuss this answer

Three dimensional array of points in space is called

Discuss this answer

The vapour density of ozone would be

A. 72

B. 8

C. 48

D. 24

Discuss this answer

At what temperature, the root mean square velocity of oxygen molecules is equal to that of $S O_{2}$ at 27°C?

A. 150°C

B. 150°K

C. 27°C

Discuss this answer

Of the following properties, the magnitude of one must always increase with temperature. The property is

Discuss this answer

Answer 1

A.

C H_{3} C O O H < C_{2} H_{5} O H < C_{2} H_{5} I

Answer 2

B.

C_{2} H_{5} I < C H_{3} C O O H < C_{2} H_{5} O H

Answer 3

C.

C_{2} H_{5} I < C_{2} H_{5} O H < C H_{3} C O O H

Answer 4

D.

C_{2} H_{5} O H < C_{2} H_{5} I < C H_{3} C O O H

Answer 5

A.

A_{3} B_{6}

Answer 6

B.

\sqrt{A B}

Answer 7

C.

A_{2} B_{5}

Answer 8

A. 16 litres

Answer 9

B. 36 litres

Answer 10

C. 8 litre

Answer 11

D. 32 litres

Answer 12

A. The molecules in a gas are in stationary state

Answer 13

B. The molecules in a gas exert appreciable attraction on each other

Answer 14

C. The molecules move in a random motion with widely different velocities

Answer 15

D. The molecules in a gas collide against each other as well as the wall of the container, but do not change their direction of motion

Answer 16

A. face centred cubic

Answer 17

B. hexagonal close packed

Answer 18

C. body centred cubic

Answer 19

D. simple cubic

Answer 20

A. a separating funnel

Answer 21

B. distillation

Answer 22

C. sublimation

Answer 23

D. filtration

Answer 24

A. at high temperature and low pressure

Answer 25

B. at low temperature and high pressure

Answer 26

C. at high temperature and high pressure

Answer 27

D. at low temperature and low pressure

Answer 28

A. water freezes

Answer 29

B. all gases become liquid

Answer 30

C. all substances are solid

Answer 31

D. molecular motion ceases

Answer 32

A. the quantity of gas

Answer 33

B. the quality of gas

Answer 34

C. type values of T and P

Answer 35

D. None of these

Answer 36

A. Equal number of electrons

Answer 37

B. Equal number of ions

Answer 38

C. Equal number of atoms

Answer 39

D. Equal number of molecules

Answer 40

A. More number of a gas molecules strike the surface per second

Answer 41

B. Velocity of the gas molecules increases

Answer 42

C. Gas molecules attract each other

Answer 43

D. Weight of the gas increase with volume

Answer 44

A. Determined by the amount of solid

N H_{4} C L

used in the experiment

Answer 45

B. Triple to that of

N H_{4} C L

Answer 46

C. Half of that

N H_{4} C L

Answer 47

D. Slightly less than half of that of

N H_{4} C L

Answer 48

A. the temperature above which the substance decomposes

Answer 49

B. the temperature above which the substance can exist only as a gas

Answer 50

C. melting point of the substance

Answer 51

D. boiling point of the substanc

Answer 52

A. propanol-2

Answer 53

B. 1.2, ethandiol

Answer 54

C. 1.2,3 propentriol

Answer 55

D. ethanol

Answer 56

B. molecules

Answer 57

C. electrons

Answer 58

C. 243.67°C

Answer 59

C. 0.526 atm

Answer 60

D. 52.6 atm

Answer 61

A. Low temperature and high pressure

Answer 62

B. High temperature and low pressure

Answer 63

C. High temperature and low pressure

Answer 64

D. None of these

Answer 65

A. 760 torr

Answer 66

B. 380 torr

Answer 67

C. 197 torr

Answer 68

D. None of these

Answer 69

A. In solid state molecules, atoms or ions are held with a strong force of attraction and are in a fixed position

Answer 70

B. In liquid state the molecules, atom or ions are held with a strong force and have a restricted motion

Answer 71

C. In gaseous states, the molecules are randomly arranged and are apart from each other

Answer 72

D. Solid, liquid and gaseous states have different movement is particles

Answer 73

A. 10 gms of calcium

Answer 74

B. 20 gms of carbon

Answer 75

C. 20 gms of calcium

Answer 76

D. 12 gms of carbon

Answer 77

A. 1:1:1:1

Answer 78

B. 1:2:2:3

Answer 79

C. 2:1:2:3

Answer 80

D. 3:2:2:1

Answer 81

A. unit cell

Answer 82

B. crystal lattice

Answer 83

C. micro-crystal

Answer 84

D. None of these

Answer 85

D. None of these

Answer 86

A. vapour pressure

Answer 87

B. density

Answer 88

C.

∆ H_{v a p}

Answer 89

D. surface tension

20 litres of hydrogen gas weighs about

Correct Answer :

Show all State of Matter MCQ

Related Questions

At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?

5.At a given temperature and pressure 2 volumes of A combine with 5 volumes of B to form 2 volmes of C and 1 volume. A combine with one volume of B to form 2 volumes of D. The formula of C is

The vol. of 20 gms of nitrogen at N.T.P.

Kinetic theory of gases postulates :

In a unit cell of cesium chloride the arrangement of cesium ions is

In a dose packed arrangement of N spheres, the number of tetrahedral holes are

Chloroform and benzene form a pair of miscible liquids. These can be separated by

When there is more deviation in the behaviour of a gas from ideal gas equation PV = nRT

The number of tetrahedral and octahedral voids per atom in a crystal lattice are, respectively

Absolute zero is the temperature at which

In the gas equation PV = xT, x is a constant. The value of the constant depends upon

According to Avogadro's hypothesis equal volumes of two gases under the same conditions of temperature and pressure contain

The number of atoms per unit cell in bcc arrangement is

Certain volume of a gas exerts on its walls some pressure at a particular temperature. It has been found that by reducing the volume of the gas to half its original value, the pressure becomes I twice that the initial value of constant temperature. This happens because

The vapour density of completely dissociated sociated $N H_{4} C L$ would be

The critical temperature of a substance is defined as

Indicate the most viscous liquid of the following

Avogadro stated that under similar conditions of temperature and pressure equal volumes of all gases contain equal number of

An open vessel at 37°C is heated until 3/5 of the air in it has been expelled. Assuming that the volume of the vessel remains constant the temperature to which the vessel is heated is

A vessel containing 10 litre of air at atmospheric pressure is connected to an evacuated 9 litre vessel The resulting pressure will be

7.Which of the following sets of conditions represent the easiest way to liquefy a gas?

What is the vapour pressure of benzoyl chloride at its boiling point (197°C)?

Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by methane is

Which of the following statement wrong?

Which of the following contains the same number of atoms as 12 gms: of Magnesium (Atomic weights : Mg = 24, C = 12, Ca = 40)

Four 1 litre flasks are separately filled with hydrogen, helium, oxygen and ozone gases at the same temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be

Three dimensional array of points in space is called

The vapour density of ozone would be

At what temperature, the root mean square velocity of oxygen molecules is equal to that of $S O_{2}$ at 27°C?

Of the following properties, the magnitude of one must always increase with temperature. The property is

Also checkout

20 litres of hydrogen gas weighs about

Correct Answer :

Show all State of Matter MCQ

Related Questions

At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?

5.At a given temperature and pressure 2 volumes of A combine with 5 volumes of B to form 2 volmes of C and 1 volume. A combine with one volume of B to form 2 volumes of D. The formula of C is

The vol. of 20 gms of nitrogen at N.T.P.

Kinetic theory of gases postulates :

In a unit cell of cesium chloride the arrangement of cesium ions is

In a dose packed arrangement of N spheres, the number of tetrahedral holes are

Chloroform and benzene form a pair of miscible liquids. These can be separated by

When there is more deviation in the behaviour of a gas from ideal gas equation PV = nRT

The number of tetrahedral and octahedral voids per atom in a crystal lattice are, respectively

Absolute zero is the temperature at which

In the gas equation PV = xT, x is a constant. The value of the constant depends upon

According to Avogadro's hypothesis equal volumes of two gases under the same conditions of temperature and pressure contain

The number of atoms per unit cell in bcc arrangement is

Certain volume of a gas exerts on its walls some pressure at a particular temperature. It has been found that by reducing the volume of the gas to half its original value, the pressure becomes I twice that the initial value of constant temperature. This happens because

The vapour density of completely dissociated sociated NH4CL would be

The critical temperature of a substance is defined as

Indicate the most viscous liquid of the following

Avogadro stated that under similar conditions of temperature and pressure equal volumes of all gases contain equal number of

An open vessel at 37°C is heated until 3/5 of the air in it has been expelled. Assuming that the volume of the vessel remains constant the temperature to which the vessel is heated is

A vessel containing 10 litre of air at atmospheric pressure is connected to an evacuated 9 litre vessel The resulting pressure will be

7.Which of the following sets of conditions represent the easiest way to liquefy a gas?

What is the vapour pressure of benzoyl chloride at its boiling point (197°C)?

Equal weights of methane and hydrogen are mixed in an empty container at 25°C. The fraction of the total pressure exerted by methane is

Which of the following statement wrong?

Which of the following contains the same number of atoms as 12 gms: of Magnesium (Atomic weights : Mg = 24, C = 12, Ca = 40)

Four 1 litre flasks are separately filled with hydrogen, helium, oxygen and ozone gases at the same temperature and pressure. The ratio of total number of atoms of these gases present in the different flasks would be

Three dimensional array of points in space is called

The vapour density of ozone would be

At what temperature, the root mean square velocity of oxygen molecules is equal to that of SO2 at 27°C?

Of the following properties, the magnitude of one must always increase with temperature. The property is

Also checkout

The vapour density of completely dissociated sociated $N H_{4} C L$ would be

At what temperature, the root mean square velocity of oxygen molecules is equal to that of $S O_{2}$ at 27°C?