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Chemistry basic general knowledge questions and answers - Page 1

1. Which of the following is called as king of chemicals ?

A. Citric acid

B. Sulphuric acid

C. Hydrochloric acid

D. Formic acid

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2. Which of the following gas has "Rotten egg" smell ?

A. Neon

B. Hydrogen sulphide

C. Fluorine

D. Xenon

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3. Organic Compounds containing carbon and hydrogen form the building blocks of all life on Earth. Now, scientists have found the same on

A. Mars

B. Mercury

C. Venus

D. Jupiter

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4. The acid which helps in digestion is

A. sulfuric acid

B. Nitric acid

C. Gastric acid

D. Tartaric acid

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5. Which of these is not a rare-earth element ?

A. lanthanum

B. terbium

C. gold

D. samarium

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