English Medium इयत्ता १० - CBSE Question Bank Solutions for Science

What effect does the concentration of \[\ce{H+_{( aq)}}\] ions have on the nature of a solution?

Express the following facts in the form of a balanced chemical equation:

“When a strip of copper metal is placed in a solution of silver nitrate, metallic silver is precipitated and a solution containing copper nitrate is formed”.

Write a balanced chemical equation with state symbols for the following reaction:

Barium chloride solution reacts with sodium sulphate solution to give insoluble barium sulphate and a solution of sodium chloride.

One of the following is a medicine for indigestion. This is:

Bee sting contains ______.

What happens when silver nitrate solution is added to sodium chloride solution?

1. Write the equation for the reaction which takes place.
2. Name the type of reaction involved.

Wasp sting contains ______.

One of the following does not inject an acidic liquid into the skin through its sting. This is:

Bee stings can be treated with ______.

It has been found that rubbing vinegar on the stung area of the skin of a person gives him relief. The person has been stung by ______.

The acid produced naturally in our stomach is ______.

The removal of oxygen from a substance is called ______.

A white precipitate can be obtained by adding dilute sulphuric acid to ______.

A white precipitate will be formed if we add common salt solution to ______.

A colourless lead salt, when heated, produces a yellow residue and brown fumes.

1. Name the lead salt.
2. Name the brown fumes.
3. Write a chemical equation of the reaction involved.

Name a sodium compound which is a constituent of many dry soap powders.

The salt which will give an acidic solution on dissolving in water is ______.

One of the following salts will give an alkaline solution on dissolving in water. This is: