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NEET Exam  >  NEET Tests  >  Chemistry Class 12  >  Test: Aldehydes Ketones & Carboxylic Acids - NEET MCQ

Test: Aldehydes Ketones & Carboxylic Acids - NEET MCQ


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25 Questions MCQ Test Chemistry Class 12 - Test: Aldehydes Ketones & Carboxylic Acids

Test: Aldehydes Ketones & Carboxylic Acids for NEET 2024 is part of Chemistry Class 12 preparation. The Test: Aldehydes Ketones & Carboxylic Acids questions and answers have been prepared according to the NEET exam syllabus.The Test: Aldehydes Ketones & Carboxylic Acids MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Aldehydes Ketones & Carboxylic Acids below.
Solutions of Test: Aldehydes Ketones & Carboxylic Acids questions in English are available as part of our Chemistry Class 12 for NEET & Test: Aldehydes Ketones & Carboxylic Acids solutions in Hindi for Chemistry Class 12 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Aldehydes Ketones & Carboxylic Acids | 25 questions in 35 minutes | Mock test for NEET preparation | Free important questions MCQ to study Chemistry Class 12 for NEET Exam | Download free PDF with solutions
Test: Aldehydes Ketones & Carboxylic Acids - Question 1
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Give the name of the following compound:

Detailed Solution for Test: Aldehydes Ketones & Carboxylic Acids - Question 1

The correct answer is option D(None of the above)
The given compound is 4-Bromo-3methylheptanal

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Arrange the following alcohols, hydrocarbon and ether in order of their increasing boiling points Pentan – 1 – ol, n – butane, pentanal, ethoxyethane.

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Alcohols have higher boiling points than aldehydes.

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Test: Aldehydes Ketones & Carboxylic Acids - Question 3
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The compound formed as a result of oxidation of ethyl benzene by KMnO4 is

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Test: Aldehydes Ketones & Carboxylic Acids - Question 4
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Give IUPAC names of the following compound:
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This is 1-phenyl propan-1-one.

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The reagents to bring about the change from but – 2 – ene to ethanal  
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Reductive Ozonolysis of alkene forms aldehyde or ketone.

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Which of the following is correct?
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Test: Aldehydes Ketones & Carboxylic Acids - Question 7
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A strong base can abstract an α – hydrogen from
Detailed Solution for Test: Aldehydes Ketones & Carboxylic Acids - Question 7

Because conjugate base that form will be stable in case of Ketone.

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Which of the following reagents can be used to convert a carboxylic acid directly into its corresponding acid chloride derivative?
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Test: Aldehydes Ketones & Carboxylic Acids - Question 9
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The appropriate reagent for the transformation:
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In this reaction, a CO group is converted to CH2​ group.

This can be achieved by Wolff-Kishner reduction which uses reagent NH2​NH2​, OH− (hydrazine in alkaline medium).


Clemmensen reduction (Zn(Hg)/HCl) cannot be used as in presence of HCl, the alcohol may undergo dehydration.

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What compound is produced when cyclohexene is treated with concentrated KMnO4?
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Conc KMnO4 will cause oxidation and ring opening forming adipic acid.

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Arrange the following compounds in decreasing order of their acid strength: i) trichloroacetic acid ii) trifluoroacetic acid iii) acetic acid and iv) formic acid
Detailed Solution for Test: Aldehydes Ketones & Carboxylic Acids - Question 11

Acidic strength of carboxylic acid -

–  More acidic than phenols or alcohols.

–  Acidity increase with the presence of a group with  -I effect in the alkyl group.Whereas it decreases with the presence of  +I group.

–  Acidity increases with increase in the number of halogen atoms on  - position.

–  It decreases with increasing distance of halogen from   

–  It increases with increase in the electronegativity of halogen.

- CF3COOH > CCl3COOH > HCOOH > CH3 COOH

Test: Aldehydes Ketones & Carboxylic Acids - Question 12
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The combination of a carbonyl group and a hydroxyl group on the same carbon atom is called a __________ group.
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-COOH is carboxyl group.

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CH3CHO and C6H5CH2CHO can be distinguished chemically by:
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CH3CHO will give iodoform test and C6H5CH2CHO will not give iodoform test.

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The common name for pentanedioic acid is:
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Pentanedioic acid is glutaric acid.

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Which of the following acids does not exhibit optical isomerism?
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Maleic Acid shows Geometrical Isomerism but does not give optical isomerism.

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In the propanoate ion
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This is because of Resonance.

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Aldehydes are produced on reduction of the following by DIBAL – H
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Both Nitriles and esters are reduced to Aldehyde on reaction with DIBAL-H.

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Which of the following statements is not correct?
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Aldehydes and ketones have polar C=O group. Therefore they undergo nucleophilic addition reactions.

Test: Aldehydes Ketones & Carboxylic Acids - Question 19
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What compound is produced when (CH3)2CHCH2Br is subjected to the following sequence of steps:
1. Mg, Et2O 
2. CO2
3. H3O+?
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Test: Aldehydes Ketones & Carboxylic Acids - Question 20
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The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage, to give benzadehyde, The reagent used for the purpose is one of the following.
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This is Etard Reaction.

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The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage. The reaction is called?
Detailed Solution for Test: Aldehydes Ketones & Carboxylic Acids - Question 21

Etard is specific reaction for conversion of toluene to Benzaldehyde.

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The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits:
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CH3CH=CHCHO is the product which is suitably substituted so will show geometrical isomer.

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In Hell – Volhard Zelinsky reaction, halogen reacts with
Detailed Solution for Test: Aldehydes Ketones & Carboxylic Acids - Question 23

Alpha Hydrogen containing carboxylic acids undergo HVZ reaction.

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The following reaction is

 
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This is Wolff Kishner reduction of Carbonyls to alkanes.

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Many naturally occurring aldehydes and ketones are used in the blending of perfumes and flavouring agents. But the preferred ones are
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Higher aldehydes are preferred.

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