__________________ is a drug or substance that makes you feel relaxed and makes your body work and react more slowly.

Which of the following is used as raw material for the manufacture of rayon?

In which of the following classifications are the elements arranged in the order of their increasing atomic number?

Which of the given metals cannot be extracted using smelting? 

Starch in potatoes reacts with _____, turning to a blue colour. 

The brand name Teflon represents which polymer?

The gas which is present in both the natural gas and the bio-gas is

Read the following questions carefully and answer them. 

The gas used for artificial fruit ripening of green fruit is —