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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)


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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.

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