Science GK Questions and Answers for SSC Exam
General Science Questions and Answers
Q.61 Chemical formula for water is
(A) NaAlO2
(B) H2O
(C) Al2O3
(D) CaSiO3
Ans . B
Q.62 The gas usually filled in the electric bulb is
(A) nitrogen
(B) hydrogen
(C) carbon dioxide
(D) oxygen
Ans . A
Q.63 Washing soda is the common name for
(A) Sodium carbonate
(B) Calcium bicarbonate
(C) Sodium bicarbonate
(D) Calcium carbonate
Ans . A
Q.64 Quartz crystals normally used in quartz clocks etc. is chemically
(A) silicon dioxide
(B) germanium oxide
(C) a mixture of germanium oxide and silicon dioxide
(D) sodium silicate
Ans . A
Q.65 Which of the gas is not known as green house gas?
(A) Methane
(B) Nitrous oxide
(C) Carbon dioxide
(D) Hydrogen
Ans . D
Q.66 Brass gets discoloured in air because of the presence of which of the following gases in air?
(A) Oxygen
(B) Hydrogen sulphide
(C) Carbon dioxide
(D) Nitrogen
Ans . B
Q.67 Which of the following is a non metal that remains liquid at room temperature?
(A) Phosphorous
(B) Bromine
(C) Chlorine
(D) Helium
Ans . B
Q.68 Chlorophyll is a naturally occurring chelate compound in which central metal is
(A) copper
(B) magnesium
(C) iron
(D) calcium
Ans . B
Q.69 Which of the following is used in pencils?
(A) Graphite
(B) Silicon
(C) Charcoal
(D) Phosphorous
Ans . A
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Rajesh Bhatia
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