1
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
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What is the spin-only magnetic moment value (BM) of a divalent metal ion with atomic number 25, in it's aqueous solution?
A
zero
B
5.26
C
5.0
D
5.92
2
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Hoffmann bromomide degradation of benzamide gives product A, which upon heating with CHCl3 and NaOH gives product B.

The structures of A and B are :
A
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Compounds Containing Nitrogen Question 126 English Option 1
B
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Compounds Containing Nitrogen Question 126 English Option 2
C
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Compounds Containing Nitrogen Question 126 English Option 3
D
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Compounds Containing Nitrogen Question 126 English Option 4
3
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
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JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Haloalkanes and Haloarenes Question 79 English
The above reaction requires which of the following reaction conditions?
A
623 K, Cu, 300 atm
B
623 K, 300 atm
C
573 K, 300 atm
D
573 K, Cu, 300 atm
4
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
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JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 117 English
The product ''A'' in the above reaction is :
A
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 117 English Option 1
B
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 117 English Option 2
C
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 117 English Option 3
D
JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 117 English Option 4
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