1. What is the most important stimulant in tea leaves?
Nicotine
Caffeine
Cocaine
Methamphetamine
2. Tupentine oil is used as medicine against joint pain, toothache, and muscle pain. What is the source of turpentine?
3. Which plant hormone controls fruit ripening?
Auxin
Cytokinin
Ethylene
Abscisic acid
4. Which is the largest living bird?
5. Body cells infected with virus produce a protein called?
Interferon
B Cells
Hemoglobin
Fibrinogen
6. What is the naturally occurring anti-coagulant in the human blood?
Apixaban
Heparin
Edoxaban
Warfarin
7. Common salt is obtained from sea water by the process of:
Chemical synthesis
Underground mining
Creating salt brines
Evaporation
8. Washing soda is:
Sodium hydroxide
Sodium bicarbonate
Hydrated sodium carbonate
Sodium chloride
9. Chemically baking soda is:
Sodium carbonate
Sodium glutamate
10. Lime water contains:
Calcium hydroxide
Calcium carbonate
11. Which process can convert your cooking oil into vegetable ghee?
Boiling
Saturation
Hydrogenation
12. Kohinoor is the most famous diamond in the world. Like other diamonds, it is chemically:
Pure carbon
Pure silicon
Pure zinc
Pure calcium
13. Commerical cork is obtained from the bark of:
14. A plant bearing both male and female flowers is called?
Monoecious
Dioecious
Hermaphrodite
Perfect flowers
15. For how much time can bacteria remain alive at sub-zero temperatures?
10 years
100 years
1000 years
More than 1000 years
