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General Science MCQ Questions | Test Paper 28

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NCERT MCQ Bit Bank Series 

General Science MCQ Questions For Competitive exams

Test Paper 28

 

Learn General science NCERT MCQ Questions 

1. Real Images is

a) Inverted

b) Erect

c) Upright

d) None

   a) Inverted

 

2. Virtual Image is

a) Inverted

b) Erect

c) Upright

d) B and C

   d) B and C

 

3. Lens used for Real image are 

a) Converging Lens

b) Diverging Lens

c) Both

d) None

  a) Converging Lens

 

4. Lens used for Virtual image are 

a) Converging Lens

b) Diverging Lens

c) Both

d) None

  b) Diverging Lens

 

5. Mirrors used for Real images ?

a) Concave Mirror

b) Convex Mirror

c) Plane Mirror

d) All the above

  a) Concave Mirror

 

6. Mirrors used for Virtual images ?

a) Concave Mirror

b) Convex Mirror

c) Plane Mirror

d) All the above

   d) All the above

 

7. Real image is formed when the light rays meet at a particular point  ?

a) Before reflection the mirror

b) After reflection from the mirror

c) Both

d) None

   b) After reflection from the mirror

 

8. Virtual image is formed when the light rays meet at definite point ?

a) Before reflection the mirror

b) After reflection from the mirror

c) Both

d) None

   b) After reflection from the mirror

 

9. Examining of eyes, ears and nose, which of the following is used ?

a) Convex Mirror

b) Concave Mirror

c) Plane Mirror

d) All the above

  b) Concave Mirror

 

10. Which of following mirrors are used in scooter/cars as side mirrors ?

a) Concave Mirrors

b) Convex Mirrors

c) Plane Mirror

d) All the above

  b) Convex Mirrors

 

11. Magnifying glasses are ?

a) Concave Lens

b) Convex Lens

c) Plane Mirror

d) All the above

  b) Convex Lens

 

12. Convex lens are ?

a) Converging Lens

b) Diverging Lens

c) Both

d) None

   a) Converging Lens

 

13. Concave lens are ?

a) Converging Lens

b) Diverging Lens

c) Both

d) None

   b) Diverging Lens

 

14. Image formed by Concave lens are ?

a) Virtual

b) Erect

c) Smaller in size

d) All the above

   d) All the above

 

15. Images can be obtained on a screen is called ?

a) Virtual Image

b) Real Image

c) Erect

d) None

   b) Real Image

 

16. Images cannot be obtained on a screen is called ?

a) Virtual Image

b) Real Image

c) Erect

d) None

   a) Virtual Image

 

17. Image formed from plane mirror is ?

a) Virtual

b) Erect

c) Smaller in size

d) All the above

   b) Erect

 

18. Images formed from Concave mirror ?

a) Virtual

b) Inverted

c) Real

d) B and C

   d) B and C

 

19. White lights is composed of ?

a) Five colours

b) Six colours

c) Seven colours

d) Nine colours

   c) Seven colours

 

20. In Superconductivity, metals resistance becomes ?

a) High

b) Zero

c) 100 ohms

d) -100 ohms

   b) Zero

 

21. Temperature of Superconductivity of Mercury ?

a) -100 degree Celsius

b) -200 degree Celsius

c) -269 degree Celsius 

d) -369 degree Celsius

 c) -269 degree Celsius

 

22. To detect nature of charge( Positive charge or negative charge) which of the following device is used ?

a) Electroscope ?

b) Rheostaut

c) Gold Leaf

d) All the above

   c) Gold Leaf
Note: Gold leaf is invented by Bennet

 

23. Moving coil Galvanometer(MCV) is used to measure ?

a) Strength of Voltage

b) Strength of Current

c) Both

d) None

   b) Strength of Current
Note: MCV is used to measure upto 10⁻⁹Amp and also to determine direction of flow of current through conductor

 

24. Potentio meter is used to measure ?

a) Magnitude of emf

b) Internal resistance of cell

c) Both

d) None

   c) Both

 

25. Capacity of capacitor is measured in ?

a) ohm

b) Farad

c) Both

d) None

  b) Farad

 

26. Transformers are used for transmitting power from ?

a) High Voltage to Low Voltage

b) Low Voltage to High Voltage

c) Both 

d) None

   c) Both

 

27. Transformer works on the principle of  ?

a) Internal Induction

b) Mutual Induction 

c) Both

d) None

 b) Mutual Induction
Note: Transformer principle proposed by Lenz

 

28. First transformer was constructed by ?

a) Lenz

b) Micheal Faraday

c) Ohms

d) None

   b) Micheal Faraday

 

29. Cell is invented by ?

a) Michael Faraday

b) Volta

c) Newton

d) None

  b) Volta
Note: With his name, we call Volta cells batteries

 

30. Laws of Electrolysis proposed by ?

a) Michael Faraday

b) Volta

c) Newton

d) None

   a) Michael Faraday

 

32. In Volta cells, Anode(+), Cathode(-)  and Electrolyte used are ?

a) Carbon, Zinc and Dil.NH4Cl

b) 2 carbon rods, Zinc and Dil.H2SO4

c) Copper, Zinc and Dil. H2SO4

d) None

   c) Copper, Zinc and Dil. H2SO4

 

33. In Daniel cells, Anode(+), Cathode(-)  and Electrolyte used are ?

a) Carbon, Zinc and Dil.NH4Cl

b) 2 carbon rods, Zinc and Dil.H2SO4

c) Copper, Zinc and Dil. H2SO4

d) Copper, Zinc and 2 electrolyte (Copper sulphate and Zinc sulphate) 

   d) Copper, Zinc and 2 electrolyte (Copper sulphate and Zinc sulphate)

 

34. In Bichromate cells, Anode(+), Cathode(-)  and Electrolyte used are ?

a) Carbon, Zinc and Dil.NH4Cl

b) 2 carbon rods, Zinc and Dil.H2SO4

c) Copper, Zinc and Dil. H2SO4

d) Copper, Zinc and 2 electrolyte (Copper sulphate and Zinc sulphate) 

   b) 2 carbon rods, Zinc and Dil.H2SO4

 

35. In Dry cells, Anode(+), Cathode(-)  and Electrolyte used are ?

a) Carbon, Zinc and Dil.NH4Cl

b) 2 carbon rods, Zinc and Dil.H2SO4

c) Copper, Zinc and NH4Cl(paste)

d) Copper, Zinc and 2 electrolyte (Copper sulphate and Zinc sulphate) 

   c) Copper, Zinc and NH4Cl(paste)

 

36. Chargeable cell are invented by ?

a) Glantr

b) Glante Plaston

c) Edison

d) None

   b) Glante Plaston

 

37. In Chargeable cells ?

a) Electrical energy converted to chemical energy

b) Chemical energy converted to electrical energy

c) Electrical energy converted to chemical energy and further Chemical energy converted to electrical energy

d) None

   c) Electrical energy converted to chemical energy and further Chemical energy converted to electrical energy

 

38. Storage cell are invented by ?

a) Glante

b) Glante Plaston

c) Thomas Alva Edison 

d) None

  c) Thomas Alva Edison

 

39. King of chemicals ?

a) Sulphuric acid

b) Nitric Acid

c) Ammonia acid

d) None

   a) Sulphuric acid

 

40. Filament in bulb is made of ?

a) Sliver

b) Steel

c) Ivory

d) Tungsten

   d) Tungsten

 

41. Which of following gas is filled in bulb ?

a) Aron gas

b) Hydrogen gas

c) Nitrogen gas

d) None

 a) Aron gas

 

42. Melting point of Tungsten metal is ?

a) 100 degree Celsius

b) 1000 degree Celsius

c) 2400 degree Celsius 

d) None

  c) 2400 degree Celsius

 

43. Which of following is correct for CFL Bulb?

a)  Compact fluorescent light

b)  Compond fluorescent light

c)  Compact fluores light

d)  Compact fluorescent liquid

   a) Compact fluorescent light

 

44. To emit white colour light which of the following vapor is filled ?

a) Sodium Vapor

b) Mercury Vapor

c) Aron Vapor

d) Neon

  b) Mercury Vapor

 

45. To emit Yellow colour light which of the following vapor is filled ?

a) Sodium Vapor

b) Mercury Vapor

c) Aron Vapor

d) Neon

   a) Sodium Vapor

 

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