NEET Organic Chemistry 2

Question 1

What is the product when a carboxylic acid reacts with an alcohol in the presence of acid catalyst?

Accepted Answer

Ester

Answer

Esterification is the reaction between a carboxylic acid and an alcohol (with H2SO4 catalyst) to produce an ester and water.

Question 2

Which reagent is used to distinguish between aldehydes and ketones in Tollens' test?

Accepted Answer

Ammoniacal silver nitrate (Tollens' reagent)

Answer

Tollens' reagent (ammoniacal silver nitrate) is reduced by aldehydes to form a silver mirror, but ketones do not react.

Question 3

What is the hybridization of carbon atoms in ethylene (ethene, CH2=CH2)?

Accepted Answer

sp2

Answer

Each carbon in ethene undergoes sp2 hybridization, forming three sigma bonds and leaving one unhybridized p orbital for the pi bond.

Question 4

Which reaction mechanism does benzene typically undergo?

Accepted Answer

Electrophilic substitution

Answer

Benzene undergoes electrophilic aromatic substitution (EAS) because addition would destroy the stable aromatic ring system.

Question 5

What is the functional group present in amines?

Accepted Answer

-NH2

Answer

Amines contain the amino (-NH2) functional group, making them derivatives of ammonia where hydrogen atoms are replaced by organic groups.

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