NEW
New Website Launch
Experience the best way to solve previous year questions with mock tests (very detailed analysis), bookmark your favourite questions, practice etc...
VISIT NOW

JEE Main

Aldehydes, Ketones and Carboxylic Acids

Chemistry

Previous Years Questions

Numerical

More
The spin only magnetic moment of the complex present in Fehling's reagent is __________ B.M. (Nearest integer).
JEE Main 2022 (Online) 27th July Evening Shift
In the given reaction The number of chiral carbon/s in product A is ___________....
JEE Main 2022 (Online) 25th July Morning Shift
A hydrocarbon 'X' is found to have molar mass of 80. A 10.0 mg of compound 'X' on hydrogenation consumed 8.40 mL of H2 g...
JEE Main 2022 (Online) 30th June Morning Shift
The major product 'A' of the following given reaction has _____________ sp2 hybridized carbon atoms. ...
JEE Main 2022 (Online) 24th June Morning Shift
Consider the above reaction where 6.1 g of Benzoic acid is used to get 7.8 g of m-bromo benzoic acid. The percentage yie...
JEE Main 2021 (Online) 18th March Evening Shift
In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula [Ag(NH3)2]+...
JEE Main 2021 (Online) 18th March Evening Shift
The total number of C-C sigma bond/s in mesityl oxide (C6H10O) is __________. (Round off to the Nearest Integer)....
JEE Main 2021 (Online) 17th March Evening Shift
The number of chiral centres present in threonine is ________.
JEE Main 2020 (Online) 4th September Evening Slot

MCQ (Single Correct Answer)

More
Consider the above reaction and predict the major product....
JEE Main 2022 (Online) 26th July Evening Shift
Hydrolysis of which compound will give carbolic acid?
JEE Main 2022 (Online) 26th July Evening Shift
The products formed in the following reaction, A and B are ...
JEE Main 2022 (Online) 26th July Morning Shift
Given below are two statements : Statement I : On heating with $$\mathrm{KHSO}_{4}$$, glycerol is dehydrated and acrolei...
JEE Main 2022 (Online) 25th July Morning Shift
An organic compound 'A' on reaction with NH3 followed by heating gives compound B. Which on further strong heating gives...
JEE Main 2022 (Online) 25th July Morning Shift
Which one of the following reactions does not represent correct combination of substrate and product under the given con...
JEE Main 2022 (Online) 25th July Morning Shift
A compound '$$\mathrm{A}^{\prime}$$ on reaction with '$$\mathrm{X}^{\prime}$$ and '$$\mathrm{Y}^{\prime}$$ produces the ...
JEE Main 2022 (Online) 25th July Morning Shift
Which among the following will be the major product of the given reaction? ...
JEE Main 2022 (Online) 30th June Morning Shift
Choose the reaction which is not possible:
JEE Main 2022 (Online) 30th June Morning Shift
Consider the given chemical reaction Identify the product P....
JEE Main 2022 (Online) 30th June Morning Shift
Which of the following reagents / reactions will convert 'A' to 'B' ? ...
JEE Main 2022 (Online) 24th June Evening Shift
In the following reaction : The compounds A and B respectively are :...
JEE Main 2022 (Online) 25th June Morning Shift
Which of the following ketone will NOT give enamine on treatment with secondary amines? [where t-Bu is $$-$$C(CH3)3]...
JEE Main 2022 (Online) 25th June Evening Shift
Which of the following conditions or reaction sequence will NOT give acetophenone as the major product?
JEE Main 2022 (Online) 25th June Evening Shift
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : A m...
JEE Main 2022 (Online) 25th June Evening Shift
The final product 'A' in the following reaction sequence ...
JEE Main 2022 (Online) 26th June Evening Shift
The reagent, from the following, which converts benzoic acid to benzaldehyde in one step is ...
JEE Main 2022 (Online) 26th June Evening Shift
Oxidation of toluene to benzaldehyde can be easily carried out with which of the following reagents?
JEE Main 2022 (Online) 26th June Evening Shift
Among the following structures, which will show the most stable enamine formation? (Where Me is $$-$$CH3)...
JEE Main 2022 (Online) 26th June Morning Shift
Which will have the highest enol content?
JEE Main 2022 (Online) 26th June Morning Shift
Consider the above reaction sequence and identify the product B....
JEE Main 2022 (Online) 26th June Morning Shift
(C7H5O2)2 $$\buildrel {hv} \over \longrightarrow $$ [X] $$\to$$ 2C6H5 + 2CO2 Consider the above reaction and identify t...
JEE Main 2022 (Online) 26th June Morning Shift
L-isomer of a compound 'A' (C4H8O4) gives a positive test with [Ag(NH3)2]+. Treatment of 'A' with acetic anhydride yield...
JEE Main 2022 (Online) 27th June Morning Shift
Which of the following reactions will yield benzaldehyde as a product? ...
JEE Main 2022 (Online) 27th June Morning Shift
'A' and 'B' respectively are: ...
JEE Main 2022 (Online) 27th June Morning Shift
Decarboxylation of all six possible forms of diaminobenzoic acids C6H3(NH2)2COOH yields three products A, B and C. Three...
JEE Main 2022 (Online) 27th June Evening Shift
Match List-I with List-II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:sol...
JEE Main 2022 (Online) 27th June Evening Shift
The correct structure of product 'A' formed in the following reaction. is...
JEE Main 2022 (Online) 28th June Morning Shift
Isobutyraldehyde on reaction with formaldehyde and K2CO3 gives compound 'A'. Compound 'A' reacts with KCN and yields com...
JEE Main 2022 (Online) 28th June Evening Shift
In the above reaction 'A' is...
JEE Main 2022 (Online) 28th June Evening Shift
Given below are two statements : Statement I : The esterification of carboxylic acid with an alcohol is a nucleophilic a...
JEE Main 2022 (Online) 29th June Morning Shift
In the given conversion the compound A is :...
JEE Main 2022 (Online) 29th June Morning Shift
Two isomers 'A' and 'B' with molecular formula C4H8 give different products on oxidation with KMnO4 in acidic medium. Is...
JEE Main 2022 (Online) 29th June Morning Shift
Given below are two statements :Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ...
JEE Main 2021 (Online) 1st September Evening Shift
In the following sequence of reactions,The compounds B and C respectively are :-...
JEE Main 2021 (Online) 1st September Evening Shift
In the following sequence of reactions a compound A, (molecular formula C6H12O2) with a straight chain structure gives a...
JEE Main 2021 (Online) 1st September Evening Shift
For the reaction given below :-The compound which is not formed as a product in the reaction is a :...
JEE Main 2021 (Online) 31st August Evening Shift
The structure of product C, formed by the following sequence of reactions is :...
JEE Main 2021 (Online) 31st August Morning Shift
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R) :Assertion (A)...
JEE Main 2021 (Online) 31st August Morning Shift
The correct order of reactivity of the given chlorides with acetate in acetic acid is :
JEE Main 2021 (Online) 31st August Morning Shift
Which one of the following tests used for the identification of functional groups in organic compounds does not use copp...
JEE Main 2021 (Online) 27th August Evening Shift
Which one of the following reactions will not yield propionic acid?
JEE Main 2021 (Online) 27th August Evening Shift
The structure of the starting compound P used in the reaction given below is :...
JEE Main 2021 (Online) 27th August Morning Shift
Consider the given reaction, the product A is :...
JEE Main 2021 (Online) 26th August Evening Shift
The major product formed in the following reaction is :...
JEE Main 2021 (Online) 26th August Morning Shift
The major products formed in the following reaction sequence A and B are :...
JEE Main 2021 (Online) 26th August Morning Shift
$$R - CN\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{(ii){H_2}O}^{(i)DIBAL - H}} R - Y$$Consider the above reactio...
JEE Main 2021 (Online) 27th July Evening Shift
Which one of the following compounds will give orange precipitate when treated with 2, 4-dinitrophenyl hydrazine?
JEE Main 2021 (Online) 27th July Morning Shift
[where $$Et \Rightarrow - {C_2}{H_5}{}^tBu \Rightarrow {(C{H_3})_3}C - $$]Consider the above reaction sequence, Product...
JEE Main 2021 (Online) 25th July Evening Shift
Maleic anhydride can prepared by :...
JEE Main 2021 (Online) 25th July Evening Shift
An organic compound 'A' C4H8 on treatment with KMnO4/H+ yields compound 'B' C3H6O.Compound 'A' also yields compound 'B' ...
JEE Main 2021 (Online) 25th July Morning Shift
Given below are two statements, one is labelled as Assertion (A) and other is labelled as Reason (R). Assertion (A) : Ga...
JEE Main 2021 (Online) 25th July Morning Shift
Consider the given reaction, the product 'X' is :...
JEE Main 2021 (Online) 25th July Morning Shift
Major product P of above reaction, is :...
JEE Main 2021 (Online) 20th July Evening Shift
The major product (P) in the following reaction is :...
JEE Main 2021 (Online) 20th July Evening Shift
Which among the above compound's does\do not form Silver mirror when treated with Tollen's reagent?...
JEE Main 2021 (Online) 20th July Morning Shift
Consider the above reaction, the product 'X' and 'Y' respectively are :...
JEE Main 2021 (Online) 18th March Evening Shift
Considering the above chemical reaction, identify the product "X" :...
JEE Main 2021 (Online) 18th March Morning Shift
Consider the above chemical reaction and identify product "A"...
JEE Main 2021 (Online) 18th March Morning Shift
In the above reaction, the structural formula of (A), ''X'' and ''Y'' respectively are :...
JEE Main 2021 (Online) 17th March Evening Shift
Mesityl oxide is a common name of :
JEE Main 2021 (Online) 17th March Morning Shift
The product ''A'' in the above reaction is :...
JEE Main 2021 (Online) 17th March Morning Shift
In the above reaction, the reagent ''A'' is :...
JEE Main 2021 (Online) 16th March Evening Shift
An unsaturated hydrocarbon X on ozonolysis gives A. Compound A when warmed with ammonical silver nitrate forms a bright ...
JEE Main 2021 (Online) 16th March Evening Shift
The structure of X is :...
JEE Main 2021 (Online) 16th March Evening Shift
Assertion A : Enol form of acetone [CH3COCH3] exists in < 0.1% quantity. However, the enol form of acetyl acetone [CH...
JEE Main 2021 (Online) 16th March Morning Shift
The product ''P'' in the above reaction is :...
JEE Main 2021 (Online) 16th March Morning Shift
Identify A in the given chemical reaction....
JEE Main 2021 (Online) 26th February Evening Shift
2, 4-DNP test can be used to identify :
JEE Main 2021 (Online) 26th February Evening Shift
Identify A in the following chemical reaction....
JEE Main 2021 (Online) 26th February Evening Shift
The major product of the following reaction is : ...
JEE Main 2021 (Online) 25th February Evening Shift
The major product of the following chemical reaction is :...
JEE Main 2021 (Online) 25th February Morning Slot
Identify A and B in the chemical reaction....
JEE Main 2021 (Online) 25th February Morning Slot
Given below are two statements :Statement I : CeO2 can be used for oxidation of aldehydes and ketones.Statement II : Aqu...
JEE Main 2021 (Online) 25th February Morning Slot
Which one of the following reactions will not form acetaldehyde?
JEE Main 2021 (Online) 25th February Morning Slot
Match List - I and List - II. Choose the correct answer from the options given below :...
JEE Main 2021 (Online) 24th February Evening Slot
Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of Hg...
JEE Main 2021 (Online) 24th February Evening Slot
Which of the following reagent is used for the following reaction ? ...
JEE Main 2021 (Online) 24th February Morning Slot
The correct match between Item-I (starting material) and Item-II (reagent) for the preparation of benzaldehyde is : .tg...
JEE Main 2020 (Online) 6th September Evening Slot
Consider the following reactions 'A' is :...
JEE Main 2020 (Online) 6th September Morning Slot
The major product obtained from the following reaction is : ...
JEE Main 2020 (Online) 6th September Morning Slot
The major products of the following reaction are : ...
JEE Main 2020 (Online) 6th September Morning Slot
The increasing order of the acidity of the $$\alpha $$-hydrogen of the following compounds is : ...
JEE Main 2020 (Online) 5th September Morning Slot
In the following reaction sequence the major products A and B are : ...
JEE Main 2020 (Online) 5th September Morning Slot
The major product [C] of the following reaction sequence will be : ...
JEE Main 2020 (Online) 4th September Evening Slot
[P] on treatment with Br2/FeBr3 in CCl4 produced a single isomer C8H7O2Br while heating [P] with sodalime gave toluene. ...
JEE Main 2020 (Online) 4th September Morning Slot
An organic compound (A) (molecular formula C6H12O2) was hydrolysed with dil. H2SO4 to give a carboxylic acid (B) and an ...
JEE Main 2020 (Online) 4th September Morning Slot
The compound A in the following reaction is : ...
JEE Main 2020 (Online) 3rd September Evening Slot
The increasing order of the reactivity of the following compound in nucleophilic addition reaction is : Propanal, Benzal...
JEE Main 2020 (Online) 3rd September Evening Slot
The correct observation in the following reactions is : ...
JEE Main 2020 (Online) 2nd September Evening Slot
An organic compound ‘A’ (C9H10O) when treated with conc. HI undergoes cleavage to yield compounds ‘B’ and ‘C’. ‘B’ gives...
JEE Main 2020 (Online) 2nd September Evening Slot
Two compounds A and B with same molecular formula (C3H6O) undergo Grignard’s reaction with methylmagnesium bromide to gi...
JEE Main 2020 (Online) 2nd September Evening Slot
Arrange the following labelled hydrogens in decreasing order of acidity : ...
JEE Main 2020 (Online) 2nd September Evening Slot
The increasing order of the following compounds towards HCN addition is : ...
JEE Main 2020 (Online) 2nd September Morning Slot
The major aromatic product C in the following reaction sequence will be : ...
JEE Main 2020 (Online) 2nd September Morning Slot
The predominant intermolecular forces present in ethyl acetate, a liquid, are:
JEE Main 2020 (Online) 8th January Morning Slot
The most suitable reagent for the given conversion is : ...
JEE Main 2020 (Online) 8th January Morning Slot
The major product(s) obtained in the following reaction is/are : ...
JEE Main 2019 (Online) 12th April Morning Slot
The major products of the following reaction are : ...
JEE Main 2019 (Online) 12th April Morning Slot
The major product 'Y' in the following reaction is : ...
JEE Main 2019 (Online) 10th April Evening Slot
Compound A(C9H10O) shows positive iodoform test. Oxidation of A with KMnO4/KOH given acid B(C8H6O4). Anhydride of B is u...
JEE Main 2019 (Online) 10th April Evening Slot
Major products of the following reaction are : ...
JEE Main 2019 (Online) 10th April Morning Slot
p-Hydroxybenzophenone upon reaction with bromine in carbon tetrachloride gives:
JEE Main 2019 (Online) 9th April Evening Slot
In the following reaction Rate of the reaction is the highest for :...
JEE Main 2019 (Online) 9th April Evening Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 9th April Morning Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 9th April Morning Slot
The major product obtained in the following reaction is ...
JEE Main 2019 (Online) 8th April Evening Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 8th April Morning Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 8th April Morning Slot
The major product of the following reaction is – ...
JEE Main 2019 (Online) 12th January Evening Slot
The aldehydes which will not form Grignard product with one equivalent Grignard reagents are - ...
JEE Main 2019 (Online) 12th January Evening Slot
The major product of the following reaction is – ...
JEE Main 2019 (Online) 12th January Evening Slot
can not be prepared by - ...
JEE Main 2019 (Online) 12th January Morning Slot
In the following reaction, products A and B are – ...
JEE Main 2019 (Online) 12th January Morning Slot
In the following reaction : Aldehyde + Alcohol   $$\buildrel {HCl} \over \longrightarrow $$  Acet...
JEE Main 2019 (Online) 12th January Morning Slot
The major product obtained in the following conversion is ...
JEE Main 2019 (Online) 11th January Evening Slot
The major product obtained in the following reaction is : ...
JEE Main 2019 (Online) 11th January Evening Slot
The major product of the following reaction is ...
JEE Main 2019 (Online) 11th January Morning Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 11th January Morning Slot
The major product obtained in the following reaction is : ...
JEE Main 2019 (Online) 10th January Evening Slot
What will be the major product in the following mononitration reaction ? ...
JEE Main 2019 (Online) 10th January Evening Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 10th January Evening Slot
The major product of the following reaction is ...
JEE Main 2019 (Online) 10th January Evening Slot
Which dicarboxylic acid in presence of a dehydrating agent is least reactive to give an anhydride?
JEE Main 2019 (Online) 10th January Morning Slot
The tests performed on compound X and their inferences are : .tg {border-collapse:collapse;border-spacing:0;} .tg td{...
JEE Main 2019 (Online) 9th January Evening Slot
The products formed in the reaction of cumene with O2 followed by treatment with dil. HCl are :
JEE Main 2019 (Online) 9th January Evening Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 9th January Evening Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 9th January Evening Slot
The major product in the following reaction is : ...
JEE Main 2019 (Online) 9th January Evening Slot
The correct match between Item I and Item II is : .tg {border-collapse:collapse;border-spacing:0;} .tg td{font-family:...
JEE Main 2019 (Online) 9th January Evening Slot
The correct decreasing order for acid strength is :
JEE Main 2019 (Online) 9th January Morning Slot
The major product of the following reaction is : ...
JEE Main 2019 (Online) 9th January Morning Slot
The major product B formed in the following reaction sequance is : ...
JEE Main 2018 (Online) 16th April Morning Slot
The major product of the following reaction is : ...
JEE Main 2018 (Online) 16th April Morning Slot
Which of the following compounds will most readily be dehydrated to give alkene under acidic condition ?
JEE Main 2018 (Online) 16th April Morning Slot
The major product formed in the following reaction is : ...
JEE Main 2018 (Online) 15th April Evening Slot
The total number of optically active compounds formed in the following reactio is : ...
JEE Main 2018 (Online) 15th April Evening Slot
The increasing order of the acidity of the following carboxylic acids is : ...
JEE Main 2018 (Online) 15th April Evening Slot
The reagent(s) required for the following conversion are : ...
JEE Main 2018 (Online) 15th April Morning Slot
The main reduction product of the following compound with NaBH4 in methanol is : ...
JEE Main 2018 (Online) 15th April Morning Slot
The increasing order of nitration of the following compounds is : ...
JEE Main 2018 (Online) 15th April Morning Slot
Which of the following compounds will show highest dipole moment ? ...
JEE Main 2017 (Online) 9th April Morning Slot
A compound of molecular formula C8H8O2 reacts with acetophenone to form a single cross-aldol product in the presence of...
JEE Main 2017 (Online) 9th April Morning Slot
The major product expected from the following reaction is : ...
JEE Main 2017 (Online) 8th April Morning Slot
The correct sequence of reagents for the following conversion will be : ...
JEE Main 2017 (Offline)
The major product obtained in the following reaction is : ...
JEE Main 2017 (Offline)
Sodium salt of an organic acid ‘X’ produces effervescence with conc. H2SO4. ‘X’ reacts with the acidified aqueous CaCl2 ...
JEE Main 2017 (Offline)
The correct statement about the synthesis of erythritol (C(CH2OH)4) used in the preparation of PETN is :
JEE Main 2016 (Online) 10th April Morning Slot
In the following sequence of reactions: The product C is...
JEE Main 2015 (Offline)
The most suitable reagent for the conversion of R - CH2 - OH $$\to$$ R - CHO is:
JEE Main 2014 (Offline)
In the reaction, the product C is:...
JEE Main 2014 (Offline)
In the given transformation, which of the following is the most appropriate reagent ? ...
AIEEE 2012
Iodoform can be prepared from all except :
AIEEE 2012
Sodium ethoxide has reacted with ethanoyl chloride. The compound that is produced in the above reaction is
AIEEE 2011
The strongest acid amongst the following compounds is :
AIEEE 2011
Trichloroacetaldehyde was subjected to Cannizzaro’s reaction by using NaOH. The mixture of the products contains sodium ...
AIEEE 2011
Which of the following on heating with aqueous KOH, produces acetaldehyde ?
AIEEE 2009
In Cannizzaro reaction given below 2PhCHO $$\buildrel {\mathop {:OH}\limits^{\left( - \right)} } \over \longrightarr...
AIEEE 2009
A liquid was mixed with ethanol and a drop of concentrated H2SO4 was added. A compound with a fruity smell was formed. T...
AIEEE 2009
The correct order of increasing acid strength of the compounds ...
AIEEE 2006
The increasing order of the rate of HCN addition to compounds A – D is (A) HCHO (B) CH3COCH3 (C) PhCOCH3 (D) PhCOPh...
AIEEE 2006
Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of an acid forms a compound if water du...
AIEEE 2005
Among the following acids which has the lowest pKa value?
AIEEE 2005
Acetyl bromide reacts with excess of CH3MgI followed by treatment with a saturated solution of NH4Cl given ...
AIEEE 2004
Which one of the following reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon?
AIEEE 2004
Which of the following undergoes reaction with 50% sodium hydroxide solution to give the corresponding alcohol and acid?...
AIEEE 2004
On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant solution is
AIEEE 2004
When CH2 = CH - COOH is reduced with LiAlH4, the compound obtained will be
AIEEE 2003
Picric acid is :
AIEEE 2002
...
AIEEE 2002
What is B?...
AIEEE 2002

MCQ (More than One Correct Answer)

More
An organic compound [A], molecular formula C10H20O2 was hydrolyzed with dilute sulphuric acid to give a carboxylic acid...
JEE Main 2020 (Online) 3rd September Morning Slot
Silver Mirror test is given by which one of the following compounds ?
AIEEE 2011

Joint Entrance Examination

JEE Main JEE Advanced WB JEE

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN

Medical

NEET

CBSE

Class 12