1
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
$$R - CN\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{(ii){H_2}O}^{(i)DIBAL - H}} R - Y$$

Consider the above reaction and identify "Y"
A
$$-$$CH2NH2
B
$$-$$CONH2
C
$$-$$CHO
D
$$-$$COOH
2
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
JEE Main 2021 (Online) 27th July Evening Shift Chemistry - Alcohols, Phenols and Ethers Question 95 English
Consider the above reaction, and choose the correct statement :
A
The reaction is not possible in acidic medium
B
Both compounds A and B are formed equally
C
Compound A will be the major product
D
Compound B will be the major product
3
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Match List - I with List - II :

List - I
(compound)
List - II
(effect/affected species)
(a) Carbon monoxide (i) Carcinogenic
(b) Sulphur dioxide (ii) Metabolized by pyrus plants
(c) Polychlorinated biphenyls (iii) haemoglobin
(d) Oxides of Nitrogen (iv) Stiffness of flower buds


Choose the correct answer from the options given below :
A
(a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
B
(a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
C
(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv)
D
(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
4
JEE Main 2021 (Online) 27th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
What is A in the following reaction?

JEE Main 2021 (Online) 27th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 127 English
A
JEE Main 2021 (Online) 27th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 127 English Option 1
B
JEE Main 2021 (Online) 27th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 127 English Option 2
C
JEE Main 2021 (Online) 27th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 127 English Option 3
D
JEE Main 2021 (Online) 27th July Evening Shift Chemistry - Compounds Containing Nitrogen Question 127 English Option 4
JEE Main Papers
2023
2021
EXAM MAP