This is Part 3 of the Top 100 RRB NTPC Chemistry Questions series. Read on for 20 one line practice questions on Chemistry for your General Science preparation for RRB NTPC 2019 Exam.
Top 100 RRB NTPC Chemistry Questions 03
Q41. Which Gases are used by sea divers for under water breathing?
Ans -: Oxygen & Helium
Q42. _______ & _______ gases are helpful for ripening of raw fruits.
Ans -: Ethylene & Acetylene
Q43. The _________ found in an ore is known as Gangue.
Ans -: Impurities
Q44. Iron is extracted from which ore?
Ans -: Hematite
Q45. Kerosene is a mixture of _______.
Ans -: Aliphatic hydrocarbons
Q46. Which Element is used for making of Lead pencil.
Ans -: Graphite
Q47. The lightest metal is _________.
Ans -: Lithium
Q48. _______ is the main ore of Mercury.
Ans -: Cinnabar
Q49. Which Metal is found in the highest proportion in earth’s crust?
Ans -: Aluminium
Q50. Mine explosions are mostly caused by mixing of Air & __________.
Ans -: Methane
Q51. What is the compound used to in Nail polish remover?
Ans -: Acetone
Q52. Natural rubber is a polymer derived from _______.
Ans -: Isoprene
Q53. The coating on non-stick cookware is of ________.
Ans -: polytetrafluoroethylene (PTFE) – TEFLON
Q54. The Nuclear Fusion on the Sun’s surface result into formation of __________ Atoms.
Ans -: Helium
Q55. Organic Compounds are only soluble in _______.
Ans -: Non-polar solvents
Q56. ______ is also know as “FOOL’S GOLD”.
Ans -: Iron Pyrite
Q57. In an Oxidation process _________ happens.
Ans -: Loss of electrons
Q58. Oxides of metals are _______.
Ans -: Alkaline
Q59. Ozone is ________ in nature.
Ans -: Diamagnetic
Q60. The chemical composition of paper is that of a _________.
Ans -: Cellulose
That is all from us in this Top 100 RRB NTPC Chemistry Questions 03 Blog. Keep checking this space for the remaining 3 parts which will be released soon.
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