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JEE Exam  >  JEE Tests  >  Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - JEE MCQ

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


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7 Questions MCQ Test - Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones)

Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) for JEE 2024 is part of JEE preparation. The Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) questions and answers have been prepared according to the JEE exam syllabus.The Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) below.
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Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 1
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In the given transformation, which of the following is the most appropriate reagent?

(AIEEE 2012)

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Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 2
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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)

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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.


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Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 3
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Silver mirror test is given by which one of the following compounds ?

(AIEEE 2011) 

Detailed Solution for Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 3

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


Thus, acetaldehyde and formaldehyde give silver mirror test.

Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 4
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Which of the following on heating with aqueous KOH, produces acetaldehyde?

(AIEEE 2009)  
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Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 5
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The increasing order of the rate of HCN addition to compounds A-D is  

(AIEEE 2006) 
Detailed Solution for Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 5

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

Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 6
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The best reagent to convert pent-3-en-2-ol into pent-3-en-2-one is

(AIEEE 2005)
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Only suitable reagent is chromic anhydride in glacial acetic acid. Other will also affect bond.

Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 7
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On vigorous oxidation by permanganate solution, 

(AIEEE 2002)
Detailed Solution for Retro (Past 13 Year) JEE Main (Aliphatic Aldehydes And Ketones) - Question 7

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

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