46) Potassium nitrate is used in
A. medicine
B. fertiliser
C. salt
D. glass
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Answer Option B
47) Soda water contains
A. carbonic acid
B. sulphuric acid
C. carbon dioxide
D. nitrous acid
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Answer Option C
48) Most soluble in water is
A. camphor
B. sulphur
C. common salt
D. sugar
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Answer Option D
49) The element common to all acids is
A. hydrogen
B. carbon
C. sulphur
D. oxygen
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Answer Option A
50) Monazite is an ore of
A. titanium
B. zirconium
C. iron
D. thorium
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Answer Option D
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