1
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The absolute value of the electron gain enthalpy of halogens satisfies :
A
Cl > Br > F > I
B
Cl > F > Br > I
C
I > Br > Cl > F
D
F > Cl > Br > I
2
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
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
3
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
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
4
JEE Main 2021 (Online) 17th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
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
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