1
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Mesityl oxide is a common name of :
A
3-Methyl cyclohexane carbaldehyde
B
4-Methyl pent-3-en-2-one
C
2,4-Dimethyl pentan-3-one
D
2-Methyl cyclohexanone
2
JEE Main 2021 (Online) 16th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2021 (Online) 16th March Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 114 English
In the above reaction, the reagent ''A'' is :
A
LiAlH4
B
NaBH4, H3O+
C
HCl, Zn $$-$$ Hg
D
Alkaline KMnO4, H+
3
JEE Main 2021 (Online) 16th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2021 (Online) 16th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 115 English
The product ''P'' in the above reaction is :
A
JEE Main 2021 (Online) 16th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 115 English Option 1
B
JEE Main 2021 (Online) 16th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 115 English Option 2
C
JEE Main 2021 (Online) 16th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 115 English Option 3
D
JEE Main 2021 (Online) 16th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 115 English Option 4
4
JEE Main 2021 (Online) 16th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Assertion A : Enol form of acetone [CH3COCH3] exists in < 0.1% quantity. However, the enol form of acetyl acetone [CH3COCH2OCCH3] exists in approximately 15% quantity.

Reason R : Enol form of acetyl acetone is stabilized by intramolecular hydrogen bonding, which is not possible in enol form of acetone.

Choose the correct statement :
A
Both A and R are true but R is not the correct explanation of A
B
A is true but R is false
C
A is false but R is true
D
Both A and R are true and R is the correct explanation of A
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