MEDIUM
Earn 100

Aldehydes yield primary alcohol on reaction with lithium aluminium hydride.

50% studentsanswered this correctly

Important Questions on Organic Chemistry-II

EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
When acetaldehyde is heated with Fehling’s solution, it gives a precipitate of:
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Aldehydes can be oxidised by
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Metaldehyde is a 
MEDIUM
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
On reduction with LiAlH4 with a ketone gives:
HARD
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Which of the following is a nucleophilic addition reaction:
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Tollens’ reagent is
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
The reaction of acetaldehyde with Tollens’ reagent gives:
MEDIUM
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Which of the following compounds is most reactive towards nucleophilic addition reactions?
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
When anhydrous acetaldehyde is brought in contact with a drop of conc.H2SO4  at ordinary temperature, the following compound is formed.
HARD
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
The reaction of C6H5CH=CHCHO with LiAIH4 gives
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Reducing agent used for reduction of aldehydes and ketone is:
MEDIUM
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Aldehydes and ketones form only addition compounds with:
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
The formation of cyanohydrin from a ketone is an example of
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Tollen’s reagent form a silver mirror when reacted with:
HARD
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones

When ethanal is heated with Fehling's solution, then the precipitate obtained is of: 

EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Aldehydes can be distinguished from ketones by using _____ reagent.
EASY
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones

Acetaldehyde is heated with Fehling’s solution, it gives a precipitate of _____. (cuprous oxide/cupric oxide/copper)

HARD
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Aldehydes and ketones do not react with :
MEDIUM
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
Which of the following properties of the carbonyl group allows aldehydes and ketones to undergo nucleophilic addition reactions?
MEDIUM
Science>Chemistry>Organic Chemistry-II>Chemical Properties of Aldehydes and Ketones
During reduction of aldehydes with hydrazine and C2H5ONa, the product formed is: