1
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In the following sequence of reactions a compound A, (molecular formula C6H12O2) with a straight chain structure gives a C4 carboxylic acid. A is :

JEE Main 2021 (Online) 1st September Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 80 English
A
$$C{H_3} - C{H_2} - COO - C{H_2} - C{H_2} - C{H_3}$$
B
JEE Main 2021 (Online) 1st September Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 80 English Option 2
C
$$C{H_3} - C{H_2} - C{H_2} - COO - C{H_2} - C{H_3}$$
D
$$C{H_3} - C{H_2} - C{H_2} - O - CH = CH - C{H_2} - OH$$
2
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Given below are two statements :

Statement I : The nucleophilic addition of sodium hydrogen sulphite to an aldehyde or a ketone involves proton transfer to form a stable ion.

Statement II : The nucleophilic addition of hydrogen cyanide to an aldehyde or a ketone yields amine as final product.

In the light of the above statements, choose the most appropriate answer from the options given below :
A
Both Statement I and Statement are true.
B
Statement I is true but Statement II is false.
C
Statement I is false but Statement II is true.
D
Both Statement I and Statement II are false.
3
JEE Main 2021 (Online) 31st August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The structures A and B formed in the following reaction are : [Ph = $$-$$C6H5]

JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 84 English
A
JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 84 English Option 1
B
JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 84 English Option 2
C
JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 84 English Option 3
D
JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 84 English Option 4
4
JEE Main 2021 (Online) 31st August Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
For the reaction given below :-

JEE Main 2021 (Online) 31st August Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 81 English

The compound which is not formed as a product in the reaction is a :
A
compound with both alcohol and acid functional groups
B
monocarboxylic acid
C
dicarboxylic acid
D
diol
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