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MDCAT Past Papers - UHS - Chemistry - Chap No 9 - 2011 Quiz

Attempt 10 MCQs on MDCAT Past Papers - UHS - Chemistry - Chap No 9 (Year 2011) | Quiz 1

1. Graphite and diamond are allotropes of carbon. Diamond is a non-conductor whereas graphite is a good conductor because:

Graphite has a layered structure
In graphite, all valence electrons are tetrahedrally bonded
In graphite one valence electron is free to move
Graphite is soft and greasy

2. The diagram below is a plot of melting points of elements of second period against atomic numbers. Lithium and fluorine are placed at the extreme ends of the plot. Where will you place carbon among the empty slots of melting points?

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