English Medium Class 10 - CBSE Question Bank Solutions

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.

Why are metals called electropositive elements?

State whether the following statement is true or false:

Non-metals react with dilute acids to produce a gas which burns with a ‘pop’ sound.

From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal:

1. which reacts with water only on boiling, and
2. another which does not react even with steam.

What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?

What name is given to those metal oxides which show basic as well as acidic behaviour?

Name two metals which form amphoteric oxides.

A copper coin is kept immersed in a solution of silver nitrate for some time. What will happen to the coin and the colour of the solution?

Name the metal which has been placed at the bottom of the reactivity series.

Name the metal which has been placed at the top of the reactivity series.