Science (English Medium) Class 11 - CBSE Question Bank Solutions for Chemistry

Indicate the σ and π bonds in the following molecules:

HCONHCH₃

Indicate the σ and π bonds in the following molecules:

HCONHCH₃

Indicate the σ and π bonds in the following molecule:

\[\ce{HCONHCH3}\]

Indicate the σ and π bonds in the following molecules:

\[\ce{HCONHCH3}\]

Indicate the σ and π bonds in the following molecules:

\[\ce{HCONHCH3}\]

Indicate the σ and π bonds in the following molecule:

\[\ce{HCONHCH3}\]

Indicate the σ and π bonds in the following molecules:

\[\ce{HCONHCH3}\] 

Indicate the σ and π bonds in the following molecule:

\[\begin{array}{cc}
\ce{HCONHCH3}
\end{array}\]

Which important property did Mendeleev use to classify the elements in his periodic table and did he stick to that?

Calculate the total number of electrons present in one mole of methane.

What is the basic theme of the organisation in the periodic table?

Define octet rule.

For the process to occur under adiabatic conditions, the correct condition is ______.

A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased.

What is the initial effect of the change on vapour pressure?

A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased.

How do rates of evaporation and condensation change initially?

A liquid is in equilibrium with its vapour in a sealed container at a fixed temperature. The volume of the container is suddenly increased.

What happens when equilibrium is restored finally and what will be the final vapour pressure?

At a certain temperature and total pressure of 10⁵ Pa, iodine vapour contains 40% by volume of I atoms

\[\ce{I2(g) <=> 2I(g)}\]

Calculate K_pfor the equilibrium.

Explain why pure liquids and solids can be ignored while writing the equilibrium constant expression?

Explain tropospheric pollution in 100 words.

Carbon monoxide gas is more dangerous than carbon dioxide gas. Why?