1. The three elements needed for healthy growth of plants are______: N, P, K
2. The most abundant element in the human body is______: Oxygen
3. Ammonium nitrate is not used for______: Rice crop
4. Sea divers use a mixture of gases for breathing during diving. The mixture is______: 80% N2 and 20% O2
5. Which one of the following is not a water soluble vitamin? Retinol
6. Which of the following enzymes bring about hydrolysis of fats? Lipase
7. The solution of which acid is used for seasoning of food? Acetic acid
8. Influenza is caused by_____: Virus
9. The blood glucose level is raised by the following except______: Insulin
10. The energy possessed by water in dam is______: Potential energy
11. The desert mammal which does not drink water is______: Kangaroo Rat
12. The mixture which can dissolve platinum is______: Aqua Regia
13. The constituent elements of bronze are______: Tin and Copper
14. The vitamin whose deficiency causes a disease called Beri Beri is______: B1
15. The electrical device which transforms voltage is______: Transformer
16. The nuclear reaction in which two or more than two lighter nuclear are fused together to form a relatively heavier one is______: Nuclear fusion
17. The purest naturally occurring crystalline form of carbon is______: Diamond