RRB NTPC Important 50 Static GK Questions and Answers from Science

RRB NTPC Important 50 Static GK Questions and Answers from Science: The Railway Recruitment Board (RRB) NTPC exam is one of the most competitive and widely attempted government exams in India. A significant portion of the exam includes questions from General Awareness, especially Static GK based on Science.

These questions are based on frequently asked topics from previous years and are designed to boost your preparation for the RRB NTPC CBT. Whether you’re revising or practicing mock tests, this set will help strengthen your grip on science-related static knowledge, which is crucial for scoring high in the General Awareness section.

RRB NTPC Important 50 Static GK Questions from Science

Here are the MCQs:

1. What is mercury also known as?
a) Heavy metal
b) White metal
c) Quicksilver
d) Fluid metal

2. What is the common name of calcium oxide (CaO)?
a) Slaked lime
b) Quick lime
c) Hydrated lime
d) Lime water

3. What is the chemical formula of rusted iron?
a) Fe₂O₃·xH₂O
b) FeO
c) Fe₃O₄
d) Fe(OH)₃

4. Sodium carbonate is commonly known as:
a) Baking soda
b) Washing soda
c) Soda ash
d) Lime soda

5. Which metal is the best conductor of electricity?
a) Gold
b) Copper
c) Aluminum
d) Silver

6. Noble metals include:
a) Gold, Silver, Platinum, Mercury
b) Lead, Tin, Mercury, Zinc
c) Iron, Nickel, Chromium, Copper
d) Bismuth, Antimony, Silver, Zinc

7. Which is the lightest element among the following?
a) Hydrogen
b) Lithium
c) Helium
d) Beryllium

8. Iron sulphide (FeS₂) is also known as:
a) Fool’s gold
b) Black diamond
c) Blue stone
d) Pyrite silver

9. Calcium cyanamide (CaCN₂) is used as:
a) Insecticide
b) Explosive
c) Nitrilime fertilizer
d) Bleaching agent

10. Nichrome is an alloy of:
a) Chromium and Aluminum
b) Nickel, Chromium and Iron
c) Copper and Zinc
d) Iron and Carbon

11. What is used to make heater coils?
a) Copper
b) Nichrome
c) Silver
d) Platinum

12. Invar is used to make:
a) Surgical instruments
b) Aircraft parts
c) Pendulums
d) Heating rods

13. What is coated on photographic plates?
a) Silver chloride and gelatin
b) Silver nitrate and ammonia
c) Silver bromide and gelatin
d) Silver oxide and water

14. Potassium cyanide is used in electroplating of:
a) Copper
b) Zinc
c) Silver and Gold
d) Iron and Lead

15. Anhydrous copper sulphate is:
a) White
b) Blue
c) Green
d) Red

16. Copper sulphate acts as a:
a) Fertilizer
b) Disinfectant
c) Bleaching agent
d) Acid

17. Silver nitrate (AgNO₃) is used to make:
a) Paint
b) Ink
c) Blotting ink
d) Plastic

18. Which oxide is used for white paint?
a) Calcium oxide
b) Zinc oxide
c) Magnesium oxide
d) Titanium dioxide

19. The main ore of aluminium is:
a) Bauxite
b) Cryolite
c) Kaolinite
d) Hematite

20. Glass is a silicate of:
a) Only sodium
b) Sodium, potassium, calcium, and lead
c) Iron, copper, zinc
d) Aluminium and potassium

21. Phototropic glass is made by adding which compound?
a) Silver nitrate
b) Silver chloride
c) Silver bromide
d) Potassium iodide

22. The phenomenon of glowing after exposure to light is called:
a) Fluorescence
b) Radiation
c) Phosphorescence
d) Bioluminescence

23. Which element is the heaviest?
a) Iron
b) Uranium
c) Osmium
d) Lead

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24. Electrical conductivity of metals _______ with increase in temperature.
a) Increases
b) Decreases
c) Remains constant
d) Doubles

25. Electrical conductivity of semiconductors _______ with increase in temperature.
a) Increases
b) Decreases
c) Remains constant
d) Becomes zero

26. Anhydrous CuSO₄ is:
a) Blue
b) Red
c) Colorless
d) Green

27. Cuprous oxide is also called:
a) Ruby copper
b) Yellow copper
c) Black copper
d) Blue copper

28. Epsom salt is chemically:
a) Na₂SO₄·10H₂O
b) MgSO₄·7H₂O
c) CuSO₄·5H₂O
d) ZnSO₄·2H₂O

29. Stannic sulphide (SnS₂) is known as:
a) Fool’s gold
b) Mosaic gold
c) Yellow brass
d) White gold

30. Excess copper in human body causes:
a) Alzheimer’s disease
b) Wilson’s disease
c) Parkinson’s disease
d) Hemophilia

31. Rusting of iron ______ its weight.
a) Increases
b) Decreases
c) Does not change
d) Doubles

32. Calcium hydride is known as:
a) Lime
b) Hydrolith
c) Quick lime
d) Bleaching powder

33. Magnesium wire is used in flash bulbs along with:
a) Nitrogen
b) Oxygen
c) Argon
d) Helium

34. Titanium is called strategic metal because:
a) It is shiny
b) It is magnetic
c) It is lighter than iron
d) It is radioactive

35. The smell of ginger and onion is due to:
a) Phosphorus
b) Carbon
c) Sulphur
d) Chlorine

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36. The most malleable metal is:
a) Platinum
b) Copper
c) Gold
d) Aluminium

37. Red color in fireworks is due to:
a) Lithium
b) Strontium
c) Sodium
d) Barium

38. Green color in fireworks is due to:
a) Sodium
b) Barium
c) Magnesium
d) Potassium

39. Which ore is the source of magnesium?
a) Bauxite
b) Magnesite
c) Hematite
d) Galena

40. Bauxite contains:
a) CaCO₃
b) Fe₂O₃
c) Al₂O₃
d) ZnO

41. The ore Cu₂O is called:
a) Chalcopyrite
b) Cuprite
c) Malachite
d) Azurite

42. Which of the following is the purest form of iron?
a) Pig iron
b) Cast iron
c) Wrought iron
d) Steel

43. What is used in artificial rain making?
a) Potassium iodide
b) Calcium carbonate
c) Silver iodide
d) Copper sulphate

44. Thermite reaction is used to extract:
a) Sodium
b) Gold
c) Iron
d) Aluminium

45. Which of the following is used in solar cells?
a) Cesium
b) Copper
c) Bismuth
d) Lead

46. What is the use of ferric chloride in medicine?
a) Antiseptic
b) Blood coagulant
c) Painkiller
d) Antibiotic

47. Which gas is used to preserve sodium?
a) Hydrogen
b) Nitrogen
c) Kerosene
d) Oxygen

48. Alloy of Cu (60-80%) and Zn (40-20%) is:
a) Bronze
b) Brass
c) German silver
d) Bell metal

49. Bell metal is mainly composed of:
a) Cu and Zn
b) Cu and Sn
c) Cu and Pb
d) Zn and Fe

50. Stainless steel is an alloy of:
a) Fe and Ni
b) Fe and Zn
c) Fe and Cr
d) Fe and Al

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RRB NTPC Important 50 Static GK Questions from Science

RRB NTPC Important 50 Static GK Answers from Science