1.

 The compound of a metal is found in nature is called—  

2.

The fuel that is used in modern submarines is :  

3.

 The basic chemical building block of natural rubber obtained from trees is :  

4.

 The Bhopal gas tragedy was caused by the gas  

5.

 ‘Vinegar’ is commercial name of :

6.

What is Calcium sulphate ?  

7.

Which is used in preparation of dynamite ?  

8.

 Oil of vitriol is 

9.

 Which is also called Stranger Gas ?

10.

 Which one of the following is the softest?