JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which one of the following is a covalent crystal? [K CET 2011]

(A)Rock salt
(B)Ice
(C)QuartzCorrect
(D)Dry ice

Answer: (C)

Solution

Quartz (SiO) is built from a three-dimensional network of Si and O atoms joined entirely by covalent bonds, making it a covalent (network) solid. Rock salt (NaCl) is an ionic solid, ice is a

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Question ID VK-141536