Racemic mixture is optically inactive. Give reason.

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(a)

A 50 : 50 mixture of two enantiomers of any optically active compound is called a racemic mixture. It is always optically inactive since rotation caused by the molecules of one enantiomer. For example, an equimolar mixture of (+)-2 bromobutane and (-) -2- bromobutane is called a racemic mixture.

Iodoform has antiseptic properties. Give one reason to support it.

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(a)

The antiseptic propertics of iodoform is due to I₂ which is liberated when iodoform comes in constact with skin.

Out of o-and p-dibromobenzene which one has higher melting point and why?

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(a)

Write the structures and names of the compounds formed when compound 'A' with molecular formula, C₇H₈ is treated with Cl₂ in the presence of FeCl_3.

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(a)

Identify the products A and B formed in the following reaction:CH₃-CH₂-CH = CH-CH₃+HCl \(\longrightarrow\) A+B

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(a)