Retro (Past 13 Year) IIT-JEE Advanced (Aliphatic Aldehydes And Ketones)


18 Questions MCQ Test Chemistry for JEE Advanced | Retro (Past 13 Year) IIT-JEE Advanced (Aliphatic Aldehydes And Ketones)


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This mock test of Retro (Past 13 Year) IIT-JEE Advanced (Aliphatic Aldehydes And Ketones) for JEE helps you for every JEE entrance exam. This contains 18 Multiple Choice Questions for JEE Retro (Past 13 Year) IIT-JEE Advanced (Aliphatic Aldehydes And Ketones) (mcq) to study with solutions a complete question bank. The solved questions answers in this Retro (Past 13 Year) IIT-JEE Advanced (Aliphatic Aldehydes And Ketones) quiz give you a good mix of easy questions and tough questions. JEE students definitely take this Retro (Past 13 Year) IIT-JEE Advanced (Aliphatic Aldehydes And Ketones) exercise for a better result in the exam. You can find other Retro (Past 13 Year) IIT-JEE Advanced (Aliphatic Aldehydes And Ketones) extra questions, long questions & short questions for JEE on EduRev as well by searching above.
QUESTION: 1

The major product of the following reaction is

Solution:


QUESTION: 2

The major product in the following reaction is

  

(2014 Adv., Only One Option Correct Type)

Solution:

This problem includes concept of nucleophilic addition reaction to carbonyl compound (ketone here) and intramolecular nucleophilic substitution reaction.
Complete reaction sequence is as shown below

*Answer can only contain numeric values
QUESTION: 3

Consider all possible isomeric ketones including stereoisomers of MW = 100. All these isomers are independently reacted with NaBH4. The total number of ketones that give a racemic product(s) is/are

Note Stereoisomers are also reacted separately.

(2014 Adv., Integer Type)


Solution:

Molecular weight of the ketone is 100.
So, molecular formula = C6H12O


While in case of (4) and (5), they do not produce enantiomer due to the presence of stereogenic centre on ketone.

QUESTION: 4

The major product H in the given reaction sequence is

(2012, Only One Option Correct Type)

Solution:

The first step is cyanohydrin reaction.


In the second step, the —CN of intermediate (I) is first hydrolysed and then dehydrated on heating in the presence of cone. H2SO4.


QUESTION: 5

The number of aldol reaction (s) that occurs in the given transformation is    

(2012, Only One Option Correct Type)

Solution:

The given reaction is an example of repeated aldol condensation followed by Cannizaro reaction.








In the last step, formaldehyde is oxidised and the other aldehyde is reduced giving the desired products.

*Answer can only contain numeric values
QUESTION: 6

In the scheme given below, the total number of intramolecular aldol condensation products formed from 'Y' is 


Solution:

QUESTION: 7

Passage for Q. Nos. (7-9) 

Two aliphatic aldehydes P and Q react in the presence of aqueous K2CO3 to give compound R, which upon treatment with HCN provides compounds. On acidification and heating, S gives the product shown below :

 

Q. 

The compounds P and Q respectively are 

(2010, Comprehension Type)

Solution:

The given product is an ester, obtained by condensation of a hydroxy acid obtained through hydrolysis of a cyanohydrin.

Acid above is obtained by acid hydrolysis of cyanohydrin S as 

S is obtained by nucleophilic addition of HCN on R, hence R is 

R is obtained by treatment of P and Q with aqueous K2CO3 through aldol condensation reaction as

QUESTION: 8

Two aliphatic aldehydes P and Q react in the presence of aqueous K2CO3 to give compound R, which upon treatment with HCN provides compounds. On acidification and heating, S gives the product shown below :

 

Q. 

The compound R is 

Solution:

The given product is an ester, obtained by condensation of a hydroxy acid obtained through hydrolysis of a cyanohydrin.

Acid above is obtained by acid hydrolysis of cyanohydrin S as 

S is obtained by nucleophilic addition of HCN on R, hence R is 

R is obtained by treatment of P and Q with aqueous K2CO3 through aldol condensation reaction as

QUESTION: 9

Two aliphatic aldehydes P and Q react in the presence of aqueous K2CO3 to give compound R, which upon treatment with HCN provides compounds. On acidification and heating, S gives the product shown below :

 

Q. 

The compound S is

Solution:

The given product is an ester, obtained by condensation of a hydroxy acid obtained through hydrolysis of a cyanohydrin.

Acid above is obtained by acid hydrolysis of cyanohydrin S as 

S is obtained by nucleophilic addition of HCN on R, hence R is 

R is obtained by treatment of P and Q with aqueous K2CO3 through aldol condensation reaction as

QUESTION: 10

Passage for Q. Nos. (10-12)

A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyi compound R, which undergoes intramolecular aldo reaction to give predominantly S.

Q. 

The structure of the carbonyl compound P, is

Solution:


QUESTION: 11

A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyi compound R, which undergoes intramolecular aldo reaction to give predominantly S.

Q. 

The structure of the product S, is 

Solution:


QUESTION: 12

A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyi compound R, which undergoes intramolecular aldo reaction to give predominantly S.

Q. 

The structures of the products Q and R, respectively, are

Solution:


QUESTION: 13

Passage for Q. Nos. (13-15)

In the following sequence, product I, J and L are formed , K represents a reagent.


Q. 

The structure of the product I is

(2008, Comprehension Type)

Solution:




QUESTION: 14

In the following sequence, product I, J and L are formed , K represents a reagent.


Q. 

The structures of compounds J and K, respectively, are

Solution:




QUESTION: 15

In the following sequence, product I, J and L are formed , K represents a reagent.


Q. 

The structure of product L is

Solution:




QUESTION: 16

Cyclohexene on ozonolysis followed by reaction with zinc dust and water gives compound E. Compound E on further treatment with aqueous KOH yields compound F. Compound F is 

(2007, Only One Option Correct Type)

Solution:


QUESTION: 17

The smallest ketone and its next homologue are reacted with NH2OH to form oxime

(2006, Only One Option Correct Type)

Solution:



QUESTION: 18

Butan-2-one can be converted to propanoic acid by which of the following ?

(2006, Only One Option Correct Type)

Solution: