Government CDS Question: Download Government CDS PDF

In which one of the following is higher percentage of carbon found?
(A) Lignite coal
(B) Peat coal
(C) Bituminous coal
(D) Anthracite coal

(D) Anthracite coal

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Commercial vulcanization of rubber involves— (A) sulphur (B) carbon (C) phosphorus (D) selenium	Which one of the following when dissolved in H2O gives hissing sound? (A) Limestone (B) Slacked lime (C) Soda lime (D) Quicklime