States of Matter Test

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States of Matter Test - 2

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Weekly Quiz Competition

Question 1
4 / -1

A certain gas takes three times as long to effuse out as helium. Its molecular mass will be :

A
27 u

B
36 u

C
64 u

D
9 u

Solution
Question 2
4 / -1

In order to increase the volume of a gas by 10%, the pressure of the gas should be

A
increased by 10%

B
increased by 1%

C
decreased by 10%

D
decreased by 1%
Question 3
4 / -1

Diffusion of helium gas is four times faster, than

A
CO₂

B
SO₂

C
NO₂

D
O₂

Solution
Question 4
4 / -1

A 4 : 1 mixture of helium and methane is contained in vessel at 10 bar pressure. Due to a hole in the vessel, the gas mixture leaks out. The composition of mixture effusing out initially is

A
8 : 1

B
8 : 3

C
4 : 1

D
1 : 1

Solution
Question 5
4 / -1

The density of a gas is 1.964 g dm^-3 at 273 K and 76 cm Hg. The gas is

A
CH₄

B
C₂ H₆

C
CO₂

D
Xe

Solution
Question 6
4 / -1

Dalton's law of partial pressure is applicable to which one of the following systems?

A
NH₃ + HCl

B
NO + O₂

C
H₂ + Cl₂

D
CO + H₂

Solution
Question 7
4 / -1

Dalton's law of partial pressure is not applicable to

A
O₂ + O₃

B
CO + CO₂

C
NH₃ + HCl

D
I + O₂
Question 8
4 / -1

A certain mass of a gas occupies a volume of 2 L at STP. To what temperature the gas must be heated to double its volume, keeping the pressure constant?

A
100 K

B
273 K

C
273°C

D
546°C

Solution
Question 9
4 / -1

Gas equation pV = nRT is obeyed by ideal gas in

A
adiabatic process

B
isothermal process

C
Both (1) and (2)

D
None of the above
Question 10
4 / -1

The density of O₂ is 16 at NTP. At what temperature its density will be 14 ? Consider that the pressure remains constant, at

A
50°C

B
39°C

C
57°C

D
43°C

Solution

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Re-Attempt Weekly Quiz Competition

States of Matter Test - 2

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States of Matter Test - 2

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SHARING IS CARING

Question 1

27 u

36 u

64 u

9 u

Solution

Question 2

increased by 10%

increased by 1%

decreased by 10%

decreased by 1%

Question 3

CO2

SO2

NO2

O2

Solution

Question 4

8 : 1

8 : 3

4 : 1

1 : 1

Solution

Question 5

CH4

C2 H6

CO2

Xe

Solution

Question 6

NH3 + HCl

NO + O2

H2 + Cl2

CO + H2

Solution

Question 7

O2 + O3

CO + CO2

NH3 + HCl

I + O2

Question 8

100 K

273 K

273°C

546°C

Solution

Question 9

adiabatic process

isothermal process

Both (1) and (2)

None of the above

Question 10

50°C

39°C

57°C

43°C

Solution

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CO₂

SO₂

NO₂

O₂

CH₄

C₂ H₆

CO₂

NH₃ + HCl

NO + O₂

H₂ + Cl₂

CO + H₂

O₂ + O₃

CO + CO₂

NH₃ + HCl

I + O₂