1. In which medium sound travel faster?
- Solid
2. Laws of electrolysis discovered by?
- Michael Faraday
3. Most of the commercial NUCLEAR POWER plant water used as a?
- Cooling agent
4. In summer the mirage are seen due to?
- Total internal reflection
5. 1 barrel oil equal to?
- 159 litres
6. Robert koach has invented?
- Electron microscope
7. The nature of fuse wire?
- Low melting point
8. The value of g is maximum?
- At poles
9. A ball is thrown upward that what happened acceleration?
- Remains constant
10. What is the unit of magnetic flux?
- Maxwell
11. Which device convert light energy to electrical energy?
- Photoelectric cell
12. Permanent magnets are made of of?
- Steel
13. Spaceship feel weightless in space is due to?
- Absence of gravity
14. Which metal is in liquid state at room temperature?
- Gallium and mercury
15. What is known as artificial silk?
- Rayon
16. Which component used for waterproof clothes?
- Calcium hydride
17. Which acid known as oil of vitriol?
- Sulfuric acid (H2 so4)
18. Acid rain components are?
- Nitrous oxide and sulphur oxide
19. Which is used to water purifier?
- Alum
20. Which process is used to synthesise Ammonia (NH3)?
- Haber's process
21. Baryta water known as?
- Barium hydroxide
22. Chemical name of washing soda?
- Sodium carbonate
23. Chief component of biogas?
- Methane (CH4)
24. Chemical name of picric acid?
- Tri nitro phenol
25. What is used to control chain reaction in nuclear reactor?
- Cadmium rod
26. Which vitamin contain cobalt?
- B12
27. Which component is responsible for permanent hardness of water?
- Sulphates and chlorides of calcium and magnesium
28. The temporary hardness of water?
- Bicarbonates of calcium and magnesium
29. How did organisms are transformed into petrol and natural gas?
- Absence of air
30. When iron is "Rusting" weight is?
- Increase
31. Egg cell is made up?
- Calcium carbonate
32. Fuse wire is made up?
- Lead and tin
33. Study of human skin?
- Dermatology
34. Which component off called cell's kitchen?
- Chloroplast
35. Which element found in in chlorophyll?
- Magnesium
36. Who proposed the theory of natural selection?
- Charles Darwin
37. Smallest bone in human body?
- Stepis
38. Longest and largest bone in human body?
- Femur
39. The plants which grow under water is called?
- Xerophytes
40. Glucose is stored in the from of in Animals?
- Glycogen
41. BCG vaccination gives?
- Tuberculosis
42. Which animals bite can causes rabies?
- Dogs and bat
43. Smallpox vaccine was discovered by?
- Edward Jenner
44. First vaccine produced by biotechnology was against virus?
- Hepatitis B
45. Genes are made by?
- Polynucleotides
46. Leprosy is also known as?
- Hansen's disease
47. RBC count in the blood increased?
- Polycythemia
48. Red blue purple colour scene in plants is because?
- Anthocyanins pigment
49. Which hormone regulate the amount of glucose in blood?
- Insulin
50. Name of the Gas making vegetable ghee?
- Hydrogen
