Which of the following is not used as the ceramic material in ‘cermets’? (A) Silicides (B) Oxides (C) Carbides (D) Nitrides

Which of the following is not used as the ceramic material in ‘cermets’?
(A) Silicides
(B) Oxides
(C) Carbides
(D) Nitrides
by

1 Answer

Answer :

(D) Nitrides
by

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Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? (A) Smog & ozone (B) Hydrogen fluoride & nitrogen oxides (C) Sulphur dioxide & spray of weed killers (D) Carbon monoxide

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Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog? (A) Nitrogen oxides (B) Hydrocarbons (C) Both 'a' & 'b' (D) Carbon monoxide

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