Basic Science Questions for Competitive Exam
General Science Questions
Q.8 Soda water contains
(A) carbonic acid
(B) sulphuric acid
(C) carbon dioxide
(D) nitrous acid
Ans . C
Q.9 The most important ore of aluminum is
(A) galena
(B) calamine
(C) calcite
(D) bauxite
Ans . D
Q.10 Most soluble in water is
(A) camphor
(B) sulphur
(C) common salt
(D) sugar
Ans . D
Q.11 Chemical formula for water is
(A) NaAlO2
(B) H2O
(C) Al2O3
(D) CaSiO3
Ans . B
Q.12 The gas usually filled in the electric bulb is
(A) nitrogen
(B) hydrogen
(C) carbon dioxide
(D) oxygen
Ans . A
Q.13 Washing soda is the common name for
(A) Sodium carbonate
(B) Calcium bicarbonate
(C) Sodium bicarbonate
(D) Calcium carbonate
Ans . A
Q.14 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
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