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Chemistry - General Science Objective Type Questions and Answers | SSC | UPSC | RRB | CDS

11 Which enzyme converts glucose to ethyl alcohol ?
A Invertase
B Maltase
C Zymase
D Diastase

Answer: Option [C]
12 Who developed atom bomb ?
A Warner Wan Brown
B J. Robert Openheimer
C Edward Taylor
D Samuel Koehen

Answer: Option [B]


13 The acid used in lead storage cells is :
A phosphoric acid
B hydrochioric acid
C nitric acid
D sulphuiric acid

Answer: Option [D]
14 Soap is prepared by boiling caustic soda with which of the following ?
A Alcohol
B Kerosene oil
C Glycerine
D Fats

Answer: Option [D]
15 Bronze is an alloy of :
A copper and Zinc
B Tin and Zinc
C Copper and Zinc and Tin
D Iron and Zinc

Answer: Option [C]
16 The natural sources of hydrocarbon is :
A Crude oil
B Biomass
C Carbohydrates
D None of these

Answer: Option [A]
17 Which among the following metals provide amphoteric oxide ?
A Sodium
B Silver
C Aluminium
D Calcium

Answer: Option [C]
18 Which among the following is pure matter ?
A Carbon-dioxide
B Brass
C Air
D Iron

Answer: Option [A]
19 Quartz is made of which of the following ?
A Calcium Sulphate
B Calcium Silicate
C Sodium Sulphate
D Sodium Silicate

Answer: Option [D]
20 Galvanised iron is made by coating iron with :
A Zinc
B Nickel
C Chromium
D Lead

Answer: Option [A]


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