1.

Rayon is chemically  

2.

Very small time intervals are accurately measured by the  

3.

The red colour of the red soil is due to  

4.

The rate of chemical reaction does not depend upon?  

5.

The most important ore of aluminum is  

6.

Which one of the following has the maximum density?  

7.

Depletion of the ozone layer is mainly due to  

8.

The major ingredient of leather is  

9.

“Bar” is the unit of?  

10.

Photosynthesis is