Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones)


7 Questions MCQ Test Chemistry for JEE Advanced | Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones)


Description
This mock test of Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) for JEE helps you for every JEE entrance exam. This contains 7 Multiple Choice Questions for JEE Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) (mcq) to study with solutions a complete question bank. The solved questions answers in this Retro (Past 13 Year) JEE Main (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) JEE Main (Aliphatic Aldehydes And Ketones) exercise for a better result in the exam. You can find other Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) extra questions, long questions & short questions for JEE on EduRev as well by searching above.
QUESTION: 1

In the given transformation, which of the following is the most appropriate reagent?

(AIEEE 2012)

Solution:




QUESTION: 2

Trichloroacetaldehyde was subjected to Cannizaro reaction by using NaOH. The mixture of the products contain sodium trichloroacetate ion and another compound. The other compound is

(AIEEE 2011)

Solution:

Cannizaro reaction is given by aldehydes (RCHO) lacking H at a-carbon or lacking α-carbon (as in HCHO). With NaOH, there is formation of acid salt (RCOO-) by oxidation and alcohol (RCH2OH) by reduction.


QUESTION: 3

Silver mirror test is given by which one of the following compounds ?

(AIEEE 2011) 

Solution:

All aldehydes including reducing sugar (as glucose, fructose) give silver mirror test (with Tollen's reagent).


Thus, acetaldehyde and formaldehyde give silver mirror test.

QUESTION: 4

Which of the following on heating with aqueous KOH, produces acetaldehyde?

(AIEEE 2009)  

Solution:




QUESTION: 5

The increasing order of the rate of HCN addition to compounds A-D is  

(AIEEE 2006) 

Solution:

Addition of HCN is a nucleophilic reaction, Greater the electron deficiency of C atom of carbonyl group, higher the rate of reaction. Hence,

QUESTION: 6

The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is

(AIEEE 2005)

Solution:


Only suitable reagent is chromic anhydride in glacial acetic acid. Other will also affect bond.

QUESTION: 7

On vigorous oxidation by permanganate solution, 

(AIEEE 2002)

Solution:

 bond is cleaved and oxidised to — COOH,—CHO group is also oxidised to —COOH.