1) Which compound is add to petrol to prevent engines from 'knocking'?
2) Who was the Indian president declared the National Emergency in 1975?
Answer: Fakkrudheen Ali Ahmed
3) Who is known as the Milk Man of India?
Answer: Dr. Varghese Kurian
4) Which is the first Trade Union in India?
5) The vast proportion of our body's weight is made up of what?
6) Why the color of cow's milk is slightly yellowish?