(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Compound A is bubbled through bromine dissolved in carbon tetrachloride and the product is CH₂Br - CH₂Br.
\[\ce{A ->[Br2/Od4] CH2Br - CH2Br}\]

What the procedure for converting the product of (b) (IV) back to A?

Give reason as to why :

 Almost 90% of all known compounds are organic in nature

Give reason as to why :

 It is dangerous to burn methane in an insufficient supply of air.

The number of C-H bonds in an ethane molecule is ______.

The functional group present in acetic acid is ______.

The unsaturated hydrocarbons undergo ______.

The catalyst used for the conversion of ethane to ethane is commonly ______.

When acetaldehyde is oxidized with acidified potassium dichromate, it forms ______.

Ethanoic acid reacts with ethanol in the presence of concentrated H₂SO₄, so as to form a compound and water. The chemical reaction which takes place is called ______.

Write the equation for the reaction taking place between 1, 2-dibromoethane and alcoholic potassium hydroxide.

Write a balanced chemical equation for the following:

Monochloroethane is hydrolysed with aqueous KOH.

Write a balanced chemical equation for the following:

A mixture of sodalime and sodium acetate is heated.

Write a balanced chemical equation for the following:

Water is added to calcium carbide.

Give reason for the following :

Methane does not undergo addition reaction, but ethane does

Give reason for the following :

Ethyne is more reactive than ethane

Give reason for the following :

Hydrocarbons are excellent fuels

Give balanced equation for the laboratory preparations of the following organic compound:

A saturated hydrocarbon from iodomethene

Give balanced equation for the laboratory preparations of the following organic compound:

An unsaturated hydrocarbon from an alcohol

Give balanced equation for the laboratory preparations of the following organic compound:

An unsaturated hydrocarbon from calcium carbide

Give balanced equation for the laboratory preparations of the following organic compound:

An alcohol from ethyl bromide