General Science Question Answers For Rail NTPC/Group D/SSC/WBPSC

 General Science Question Answers For Rail NTPC/Group D/SSC/WBPSC

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                          Welcome to www.jobguidee.com. Today we are providing some important General Science Questions Answers set for Upcoming exams like Railway NTPC/Group D/PSC/SSC and many more. These questions are based on previous year and many important topic.So just go down and read those questions, You can note down also : 

1. What type of lens is used to see didtant object ?

Ans : Concave lens

2. Which metal is used in electro magnet ?

Ans : Soft iron

3. What is pure Gold ?

Ans : 24 carat

4. By what process iron is electroplated by zinc ?

Ans : Galvanisation

5. Why the fire issued from electric current can't be extinguished with the help of water ?

Ans : It may cause short circuit

6. Why the generally suffer frlm breathing problem in Himalaya ?

Ans : In higher altitude the density of air is low, so amount of oxygen is also low

7. What is the normal speed of sound in air ?

Ans : 332 m/sec

8. Why cloud do not condense in desert area ?

Ans : because of low humidity

9. A sprayer acts on which principle ?

Ans : Pascal's law

10. Why we feel hot in cloudy night ?

Ans : Clouds prevent radiation of heat from earth surface

11. Why echo originates ?

Ans : Due to the reflection of sound

12. Through which metal sound goes fastest ?

Ans : Steel

13. Decibel is the unit of which physical quantity ?

Ans : Intensity of sound

14. In which research Raman effect is used ?

Ans : Colloidal Solution

15. What is the best conducter of electric current ?

Ans : Silver ( Ag )

16. Why sea water appears blue ?

Ans : For scattering of sunlight

17. How the weight of the iron changes when it rust ?

Ans : increases

18. What is the Currie Point ?

Ans : The temperature at which magnetic property lost

19. What is the colour of the extreme ends of Rainbow ?

Ans : Violet and Red

20. Why the sky appears blue ?

Ans : Due to scattering of light

21. In which medium the speed of light is maximum ?

Ans : Vacuum

22. Which lens is used microscope ?

Ans : Convex Lens

23. How spectrum is originited ?

Ans : As a result of dispersion of light by the prism

24. What is the composition of Fuse Wire ?

Ans : 63% Sn and 37% Pb

25. What is the reason of the creation of mirage ?

Ans : Beacuse of total internal reflection of light

26. Which type of image is formed on the screen or camera ?

Ans : Real image

27. Which type of image is formed on the mirror ?

Ans : Vitual image

28. What is the unit of the heat in CGS method ?

Ans : Calorie

29. Which is measure with the help of common balance ?

Ans : Mass of an object

30. Who is the propounder of Quantum Theory ?

Ans : Planck

31. What is the unit of electric current ?

Ans : Ampere

32. What is the unit of potential difference ?

Ans : Volt

33. What is unit of resistance ?

Ans : Ohm

34. Electric current depends on which factors ?

Ans : The material,length and area of conductor

35. Jule is the unit of what physical quantity ?

Ans : Work and Energy

36. At present which gas is intriduced in the bulb instead of keeping it vacant ?

Ans : Inert gas

37. Which wire is used in electric heater ?

Ans : Nichrome wire ,an alloy of Nickel and Chromium

38. Periscope acts on which principle ?

Ans : The principle of reflection and refraction of light

39. What energy converts to what energy in electric motor ?

Ans : Electric Energy to kinetic energy

40. How resistance is changed with the increase of the length wire of conductor ?

Ans : Resistance increase

41. How resistance changes with the increase of cross section of conductor ?

Ans : Decreases

42. What is the energy change in electric cell ?

Ans : Chemical energy converts to electric energy

43. What is Cathode Ray ?

Ans : Stream of very fast electron

44. What is the necessity of expansion of sound ?

Ans : Medium

45. How sound energy expand through a medium ?

Ans : In wave

46. What is the minimum distance between reflector and a person to hear echo ?

Ans : 16.6 m

47. The sound having frequency more than 20,000 per second is known as ?

Ans : Supersonic Sound

48. What is the frequency of a sub-sonic sound ?

Ans : Less than 20 per second

49. What is the length of the day in case the volume of earth become half ?

Ans : 6 hrs

50. What is the common substance of each element ?

Ans : Electron

51. Who discovered Neutron ?

Ans : Chadwick

52. The atoms of the different element having same mass number of nucleus is called ?

Ans : Isobar

53. The atoms of the element having same number of neutrons in nucleus but different number of protons is called ?

Ans : Isoton

54. How many isotopes are there is Uranium ?

Ans : Three

55. What is the use of isotop of iodine ?

Ans : In the treatment of throat cancer ( Thyroid Gland )

56. Which type of lever the scissor is ?

Ans : 1st Class

57. What is the volume of 1 gm mole of any gas at NTP ?

Ans : 22.4 litre

58. What instrument is used to measure the purity of the milk ?

Ans : Lactometer

59. How weight of a substance varies when it is transported to moon ?

Ans : Decreases

60. What type of lever the wheel is ?

Ans : 2nd type

Thank You.