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 Rrb Ntpc General Science Pdf in English :

Hello Readers , RRB conduct many exams in every year.Rrb Ntpc General Science Pdf in English. In the Every Exam of RRB , General Awareness Questions Are asked. So, if you are preparing for RRB Exam , you should have Knowledge of General Awareness. In this post we collected the Previous Years Science GK Questions asked in RRB Exams.

 

Science GK Previous Years Questions of RRB Exams :

 

1. Which of the following devices helps to maintain a potential difference across a conductor ?

A. A cell or battery

B. Ammeter

C. Voltmeter

D. Galvanometer

 

2. Which of the following is not a voluntary action ?

A. Taking an object

B. Beating of heart

C. Closing a fist

D. Moving a chair

 

3. Which of the following allotropes of Carbon is used as a reducing agent in metallurgy ?

A. Graphite

B. Charcoal

C. Coke

D. Carbon Black

 

4. Which one of the following elements has the lowest atomic mass ?

A. Nitrogen

B. Hydrogen

C. Lithium

D. Helium

 

5. The SI unit of electric charge is :

A. Volt

B. Ampere

C. Coulomb

D. Ohm

 

 

6. Ammonium Nitrate, on thermal decomposition , produces :

A. N2 and H2O

B. N2O and H2O

C. NH2 and NO

D. NH3 and NO2

 

7. Which of the following is a Non-Luminous body ?

A. Firefly

B. Moon

C. Burning candle

D. Glowing bulb

 

8. Name of type of mirror used in the headlight of vehicles ?

A. Plane Mirror

B. Plano-convex mirror

C. Convex mirror

D. Concave mirror

 

9. Which of the following is an unsaturated hydrocarbon ?

A. Butane

B. Pentane

C. Ethylene

D. Propane

 

10. Which of the following causes damage to bridges, iron railings and all objects made of metals ?

A. Rancidity

B. Acidity

C. Reduction

D. Corrosion

11. Which one is not a good conductor of electricity ?

A. Porcelain

B. Aluminium

C. Tungsten

D. Nickel

 

12. Which one of the following is not alkaline ?

A. Sodium

B. Potassium

C. Lithium

D. Sulphur

  

13. Gunpowder mainly contains :

A. Calcium sulphate

B. Potassium nitrate

C. Lead sulfide

D. Zinc sulfide

 

14. Stainless steel is :

A. A compound

B. A mixture

C. An element

D. An alloy

 

15. What is the common name of the solution of calcium hydroxide ?

A. Lime water

B. Diet soda

C. Salt solution

D. Vinegar

 

 

16. When milk becomes sour, ________ is produce ?

A. Lactose

B. Lactic acid

C. Salicylic acid

D. Linoleic acid

  

17. What happens as we go down the group in the periodic table ?

A. The number of shells decreases

B. Valence electrons decreases

C. The number of shells increases

D. Atomic size decreses

 

18. The boiling point of Alcohol is 78degree C . What is the temperature in Kelvin Scale ?

A. 78 K

B. 314 K

C. 373 K

D. 351 K

 

19. The unit of power used in industry is :

A. Kilowatts

B. Joule

C. Watts

D. Horse Power

 

20. Two or more elements combine to form a :

A. Valency

B. Radical

C. Atom

D. compound 

21. The number of neutrons in an atom is equal to the :

A. Mass number

B. Mass number -atomic number

C. Atomic number

D. Number of electrons

  

22. The reflector of search light is a :

A. Convex mirror

B. Concave mirror

C. Cylindrical mirror

D. Plane mirror

 

23. Name the metal that can be easily cut with a knife :

A. Sodium

B. Copper

C. Gold

D. Aluminium

 

24. The SI unit of resistance is :

A. Coulomb

B. Ohm

C. Joule

D. Newton

 

25. In a Plant , which of the following is converted into seed ?

A. Stigma

B. Ovary

C. Style

D. Ovule

 

26. The reproduction parts of a flower are :

A. Stamen and carples

B. Calyx and carpels

C. Calyx and corolla

D. Corolla and stamens

 

27. Which of the following element is lustrous in nature ?

A. Carbon

B. Iodine

C. Sulphur

D. Nitrogen

 

28. The blackboard seems black because it :

A. Reflects every body

B. Does not reflect any colour

C. Absorb black colour

D. Reflects black colour

 

29. Which of the following alloys contains Tin :

A. Brass

B. Solder

C. Duralumin

D. Steel

 

30. The colour in water is determined using instrument called :

A. Spectrophotometer

B. Photometer

C. Tintometer

D. Atomic absorption spectrophotometer

 

 

31. Which of the following is used in making smoke bombs ?

A. Sulphur

B. Phosphorous

C. Hydrogen

D. Carbon

 

32. Silver halides are used in photographic plates because they are :

A. Oxidised in air

B. Soluble in hyposolution

C. Reduced by light

D. Totally colourless

 

  

33. Electron microscope was invented by :

A. Knoll and Ruska

B. Robert Koch

C. Leeuwenhoek

D. C.P.Swanson

 

 

34. Electrostatic precipitator is used to control the pollution of :

A. Air

B. Water

C. Noise

D. Thermal

 

35. Dehydration in human body is caused due to the loss of :

A. Vitamins

B. Salts

C. Hormones

D. Water

 

 

36. In the eye colour vision is affected by the presence of :

A. Choroid coat

B. Sclerotic coat

C. Rods

D. Cones

37. Metals are placed on which side of the Modern Periodic Table ?

A. Top row

B. Right side

C. Bottom row

D. Left side

  

38. Elements that lie in the same column have :

A. Similar properties

B. Different properties

C. Same physical properties

D. Different chemical properties

 

39. Which one of the following is used for determining the structure of the crystal :

A. Gamma rays

B. X rays

C. UV rays

D. Visible light

40. Contact lenses are made from :

A. PVC

B. Polystrene

C. Lucite

D. Telfon

 

41. Meson was discovered by :

A. Anderson

B. Seaburg

C. Powell

D. Yukawa

  

42. Plants growing on the sand are called as :

A. Chasmophytes

B. Oxylophytes

C. Lithophytes

D. Psammophytes

 

43. Which of the following main elements is used in making matchbox ?

A. Graphite

B. Phosphorous

C. Silicon

D. Sodium

 

44. Who invented the Centigrade scale ?

A. Anders Celsius

B. Daniel Gabriel Fahrenhiet

C. Wiliam Thomson

D. Wright Brothers

 

 

45. Objects float on water based on :

A. Newton’s Third law of motion

B. Hook’s law

C. Faraday’s law

D. Archimedes Principle

 

Attempt Quiz  :

1. Electron microscope was invented by :
A. Knoll and Ruska
B. Robert Koch
C. Leeuwenhoek
D. C.P. Swanson 
... Answer is A)
Knoll and Ruska



2. The colour in water is determined using instrument called :
A. Spectrophotometer
B. Photometer
C. Tintometer
D. None of these 
... Answer is C)
Tintometer



3. The reflector of search light is a :
A. Convex Mirror
B. Concave Mirror
C. Cylindrical Mirror
D. Plane Mirror 
... Answer is B)
Concave Mirror



4. Which of the following element is lustrous in nature ?
A. Carbon
B. Nitrogen
C. Sulphur
D. Iodine 
... Answer is D)
Iodine



5. The blackboard seems black because it ?
A. Reflects every body
B. Does not reflect any colour
C. Absorb Black colour
D. Reflects black colour;

... Answer is B)
Does not reflect any colour

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