Among the following four structures I to IV,

it is true that

Solution

Carbon atom is connected with four different groups in chiral structure.

The chirality of the compound

Solution

Clockwise rotation.

Hence configuration is R.If the eye travel in a clockwise direction, the configuration is R as the order of priority is Br > Cl > CH₃ > H

Kjeldahl’s method is used in the estimation of

Solution

Kjeldahl's method is suitable for estimating nitrogen in those compounds in which nitrogen is linked to carbon and hydrogen. The method is not used in case of nitro,azo and azoxy compound. This method is basically used for estimating nitrogen in food fertilizers and agricultural products.

Which of the following pairs of compounds are enantiomers?

Solution

Compound which are mirror image of each other and are non superimposable are termed as enantiomers.

These are enantiomers

A compound of molecular formula of C₇H₁₆ shows optical isomerism, compound will be

Solution

A compound is said to exhibit optical isomerism if it atleast contains one chiral carbon atom, which is anatom bonded to 4 different atoms or groups.

Lassaigne’s test for the detection of nitrogen fails in

Solution

A compound is said to exhibit optical isomerism if it atleast contains one chiral carbon atom, which is anatom bonded to 4 different atoms or groups.

Tautomerism will be exhibited by

Solution

Tautomerism is exhibited by the oscillation of hydrogenatom between two polyvalent atoms present in the molecule. As (d) has α-hydrogen atom therefore it shows tautomerism whereas other structures do not.

The process of separation of a racemic modification into d and l-enantiomers is called

Lassaigne’s test is used in qualitative analys is to detect

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