NDA 2022 Chemistry question

Which one of the following is a covalent compound?

(A)Calcium oxide
(B)Sodium nitride
(C)Silicon carbideCorrect
(D)Zinc sulphide

Answer: (C)

Solution

Silicon carbide, SiC, is formed between silicon and carbon, which share electrons; it is a giant covalent (network) solid like diamond. Calcium oxide and

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Question ID VK-032052