Class XI Chemistry States of Matter Quiz 1

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Question 1

In order to increase the volume of a gas by (at constant temperature), the pressure of the gas would be :

• ADecreased by
• BDecreased by
• CIncreased by
• DIncreased by

Question 2

Some mercury is poured into a capillary tube of uniform bore and one end closed. When the tube is held horizontally, mercury column has a length of and air enclosed in the closed end has a length of 10 . If the tube is now held vertically, with open end upwards, the length of the air column will be (take atmospheric pressure at the place of experiment to be ) :

• A
• B
• C
• D

Question 3

A mixture of Argon (Ar) and Nitrogen (N₂) has a density of at STP. Mole fraction of N₂ in the mixture is :

• A
• B
• C
• D

Question 4

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

• A
• B
• C
• D

Question 5

For the different ideal gases versus P variations at definite temperature is -

• AM₃ > M₂ > M₁
• B M₁ > M₂ > M₃
• CM₃ > M₂ > M₁
• D

Question 6

A polar and non-polar molecule interact by:

• ALondon forces
• BDipole-induced dipole forces
• CHydrogen bond
• DDipole forces

Question 7

Among the following, the force that is not included in Vander Waals forces is:

• ADipole-dipole forces
• BDipole induced dipole forces
• CLondonforces
• DCovalent forces

Question 8

The strength of London forces do not increase with the increase in:

• AThe distance between two interacting particles
• BThe surface area of molecule
• CNumber of electrons
• DMolecular size

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