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Q.

Which of the following is wrong?

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a

Hexane inspite of having lower molecular mass has more boiling point than CF4

b

Alkanes with even number of carbon atoms has more atoms due to attraction effect.

c

Tetraethyl lead i.e. TEL is used as anti-knocking agent which decomposes to produce ethyl radical in the cylinder of engine.

d

Octane no. increases with increase in no. of carbon atoms in straight chain.

answer is D.

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Detailed Solution

Octane number decreases with increase in chain length.
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