States of Matter Test

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States of Matter Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Gases deviate from ideal behaviour because their molecules

A
possess negligible volume

B
are not attracted to each other

C
are polyatomic

D
have forces of attraction between them
Question 2
1 / -0

The following question consists of an Assertion (A) and a Reason (R). Use the following options to mark the appropriate answer.

(A): van der Waals equation is applicable only to non-ideal gases.

(R): Ideal gases obey the equation PV = nRT.

A
Both (A) and (R) are correct and (R) is the correct explanation of (A).

B
Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C
(A) is correct, but (R) is incorrect.

D
(A) is incorrect, but (R) is correct.
Question 3
1 / -0

The following question consists of an Assertion (A) and a Reason (R). Use the following options to mark the appropriate answer.

(A): Helium shows only positive deviation from ideal behaviour.
(R): Helium is an inert gas.

A
Both (A) and (R) are correct and (R) is the correct explanation of (A).

B
Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C
(A) is correct, but (R) is incorrect.

D
(A) is incorrect, but (R) is correct.
Question 4
1 / -0

The following question has four choices, out of which ONLY ONE is correct.

The density of ammonia gas at 25^oC and 2 atm pressure is about

A
2.07 g/L

B
1.39 g/L

C
0.97 g/L

D
6.6 g/L
Question 5
1 / -0

Which gas has the same rate of diffusion as that of CO₂ at the same temperature and pressure?

A
N₂O

B
NO₂

C
CO

D
N₂
Question 6
1 / -0

The kinetic theory of gases predicts that total kinetic energy of gaseous assembly depends on

A
pressure of the gas

B
temperature of the gas

C
volume of the gas

D
pressure, temperature and volume of the gas
Question 7
1 / -0

If two substances A and B have p^oA : p^oB = 1 : 2, where p^oA and p^oB are partial vapour pressures of A and B, and have mole fraction in the solution as 1 : 2, then what is the mole fraction of A in vapour phase?

A
0.33

B
0.25

C
0.52

D
0.20
Question 8
1 / -0

The following question consists of an Assertion (A) and a Reason (R). Use the following options to mark the appropriate answer.

(A): SO₂ gas is easily liquefied while H₂ is not.

(R): SO₂ has low critical temperature, while H₂has high critical temperature.

A
Both (A) and (R) are correct and (R) is the correct explanation of (A).

B
Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C
(A) is correct, but (R) is incorrect.

D
(A) is incorrect, but (R) is correct.
Question 9
1 / -0

The following question consists of an Assertion (A) and a Reason (R). Use the following options to mark the appropriate answer.

(A): The pressure of a fixed amount of an ideal gas is proportional to its temperature at constant volume.
(R): Ideal gas molecules neither attract nor repel each other.

A
Both (A) and (R) are correct and (R) is the correct explanation of (A).

B
Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C
(A) is correct, but (R) is incorrect.

D
(A) is incorrect, but (R) is correct.
Question 10
1 / -0

The root mean square speeds at STP for the gases H₂, N₂, O₂ and HBr are in the order

A
H₂ < N₂ < O₂ < HBr

B
HBr < O₂ < N₂ < H₂

C
H₂ < N₂ = O₂ < HBr

D
HBr < O₂ < H₂ < N₂

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States of Matter Test - 2

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States of Matter Test - 2

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Question 1

possess negligible volume

are not attracted to each other

are polyatomic

have forces of attraction between them

Question 2

Both (A) and (R) are correct and (R) is the correct explanation of (A).

Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

(A) is correct, but (R) is incorrect.

(A) is incorrect, but (R) is correct.

Question 3

Both (A) and (R) are correct and (R) is the correct explanation of (A).

Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

(A) is correct, but (R) is incorrect.

(A) is incorrect, but (R) is correct.

Question 4

2.07 g/L

1.39 g/L

0.97 g/L

6.6 g/L

Question 5

N2O

NO2

CO

N2

Question 6

pressure of the gas

temperature of the gas

volume of the gas

pressure, temperature and volume of the gas

Question 7

0.33

0.25

0.52

0.20

Question 8

Both (A) and (R) are correct and (R) is the correct explanation of (A).

Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

(A) is correct, but (R) is incorrect.

(A) is incorrect, but (R) is correct.

Question 9

Both (A) and (R) are correct and (R) is the correct explanation of (A).

Both (A) and (R) are correct, but (R) is not the correct explanation of (A).

(A) is correct, but (R) is incorrect.

(A) is incorrect, but (R) is correct.

Question 10

H2 < N2 < O2 < HBr

HBr < O2 < N2 < H2

H2 < N2 = O2 < HBr

HBr < O2 < H2 < N2

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N₂O

NO₂

N₂

H₂ < N₂ < O₂ < HBr

HBr < O₂ < N₂ < H₂

H₂ < N₂ = O₂ < HBr

HBr < O₂ < H₂ < N₂