States of Matter Test

Result

States of Matter Test - 16

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Question 1
4 / -1

50 ml of gas A diffuse through a membrane in the same time as 40 ml of a gas B under identical pressure-temperature conditions. If the molecular weight ofA is 64, that of B would be

A
100

B
250

C
200

D
80

Solution
Question 2
4 / -1

0.5 mole of each of H₂, SO₂ and CH₄ are kept in a container. A hole was madein the container. After 3 hours, the order of partial pressures in the container will be

A

B

C

D

Solution
Question 3
4 / -1

The rms velocity of an ideal gas at 27ºC is 0.3 ms^-1. Its r.m.s velocity at 927ºC (in m^-1) is

A
3.0

B
2.4

C
0.9

D
0.6

Solution
Question 4
4 / -1

By how many folds the temp. of a gas would increase when the r.m.s velocity of gas molecules in a closed container of fixed volume is increased from 5 × 10⁴cms^-1 to 10 × 10⁴cms^-1

A
0.5 times

B
2 times

C
4 times

D
16 times

Solution
Question 5
4 / -1

Ratio of C_p and C_vof gas ‘X’ is 1.4. The number of atoms of the gas ‘X’ present in 11.2 litres of it at N.T.P. is

A

B

C

D

Solution
Question 6
4 / -1

The vapour density of a gas is 11.2. The volume occupied by 11.2 g of this gasat N.T.P. is

A
1 L

B
11.2 L

C
22.4 L

D
20 L
Question 7
4 / -1

At 100ºC and 1 atm, if the density of liquid water is 1.0 g cm^-3 and that of water vapour is 0.0006 g cm^-3, then the volume occupied by water moleculesin 1 litre of steam at that temperature is

A
6 cm³

B
60 cm³

C
0.6 cm³

D
0.06 cm³
Question 8
4 / -1

If X is the total number of collisions which a gas molecule registers with others per unit time under particular conditions, then the collision frequency of the gas containing N molecules per unit volume is

A
X/N

B
NX

C
2NX

D
Question 9
4 / -1

A gas is found to have a density of 1.80 g L^-1 at 760 mm pressure and 27ºC.The gas will be

A
O₂

B
CO₂

C
NH₃

D
SO₂

Solution
Question 10
4 / -1

4.0 g of argon (at mass = 40) in a bulb at a temperature of TK had a pressure P atm. When the bulb was placed in hotter bath at a temperature 50^o more than the first one, 0.8 g of gas had to be removed to get the original pressure.T is equal to

A
510 K

B
200 K

C
100 K

D
73 K

Solution