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Monday, 23 May 2016

50 questions of general science for competition


50 questions of general science for competition 


1. Which is used as a coolant in nuclear reactors? – Liquid sodium 

2. Which is the second most abundant metal in the earth’s crust ? – Iron 

3. Which plant is used for green manuring in India?  Sun hemp 


4. Optic fibres are mainly used for which purpose? – Communication 


5. Which is the lightest gas– Hydrogen 


6. What is the Mendel’s principles of inheritance? – Sexual reproduction 


7. How is the frequency of ultrasound wave typically? – Above 20,000 kHz


8. What is formula of plaster of paris?  2CaSO4.H2


9. Which is the largest flower in the world ? – Rafflesia 


10. Who received Nobel Prize twice for the same subject? – Marie Curie 


11. What are Carbon, diamond and graphite together called? – Allotropes 

12. What is the approximate velocity of light per second? – 3 × 108 m 

13. Which metal was first discovered by man ? – Copper 

14. Which nutrients are most likely to be affected by food processing and storage? – 
Vitamins 

15. What do we use in SONAR? – Ultrasonic waves 

16. By whom was the quantum theory first enunciated? – By Max Planck 

17. Food wrapped in newspaper is likely to get contaminated with which desease? – Lead 

18. The wavelength of X-rays is of the order of howmany angstrom? – 1 Angstrom 

19. Which isotope of uranium capable of sustaining chain reactions? – U-235 

20. What is Hepatitis-B, which affects liver? – Virus 

21. Which polymer is widely used for making bullet proof material? – Polyethylene 

22. Which is the essential element in all organic compounds? – Carbon 

23. Which vitamin is essential for poor bone and teeth formation? – Vitamin D 

24. Old-written material, which cannot be read easily, how can be read? – By infrared rays 

25. Which synthetic fibre is known as artificial silk? – Rayon 

26. Which vegetable protein is considered as good as an animal protein? – Soyabean 

protein 

27. ‘mho’ is the unit of which unit? – Specific resistance 

28. Which are the important raw materials required in cement industry ? – Limestone and 
clay 

29. By which would Desert plants be characterised? – By sunken stomata 

30. What is the number of basic units in the International System of Units? – 7 

31. Which are the high-temperature superconductors? – Ceramic oxides 

32. Which is the sweetest sugar? – Fructose 

33. A small weight is put on the pressure cooker. It increases the pressure of the steam. Why? – Area of contact is small 

34. Which is the highest grade of coal whose surface is shining and has the highest calorific 
value? – Anthracite 

35. In certain amino acids, which elements is found in addition to carbon, hydrogen, nitrogen and oxygen? – Sulphur 

36. A car is running on a road at a uniform speed of 60 km/hr. What is the net resultant force on the car? – Equal to zero 

37. Which substance coated on plastic tape? – Iron oxide 

38. Which combination of foods providing protein quality nearest to that of meat? – Sprouted gram and groundnut 

39. Which common devices works on the basis of the principle of mutual induction? – Transformer 

40. Which charcoal is used to discoloured raw sugar? – Wood charcoal 

41. Milk, cheese and eggs are the source of vitamins which vitamins? – A and D 

42. Which is the wave in which the particles of the material move up and down as the wave goes from left to right? – Transverse 

43. According to Dalton’s atomic theory, which is the smallest particle which can exist independently? – An atom 

44. What is the source of immediate energy for cellular activity? – ATP 

45. Which is most efficient engine? – Electric 

46. What is the conversion of Fe++ to Fe+++– Oxidation 

47. By whom was Gene first isolated? – Hargobind Khurana 

48. When milk is churned, how does the cream separate from it? – Due to the centrifugal force 

49. For which thing is Washing soda the common name? – Sodium carbonate 

50. From the biological evolutionary point of view, the human heart is close to the heart of which animal? – Pig 





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