1
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The spin only magnetic moments (in BM) for free Ti3+, V2+ and Sc3+ ions respectively are :

(At.No. Sc : 21, Ti : 22, V : 23)
A
3.87, 1.73, 0
B
1.73, 3.87, 0
C
1.73, 0, 3.87
D
0, 3.87, 1.73
2
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following is correct structure for cytosine?
A
JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Biomolecules Question 81 English Option 1
B
JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Biomolecules Question 81 English Option 2
C
JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Biomolecules Question 81 English Option 3
D
JEE Main 2021 (Online) 25th July Evening Shift Chemistry - Biomolecules Question 81 English Option 4
3
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Identify the species having one $$\pi$$-bond and maximum number of canonical forms from the following :
A
SO3
B
O2
C
SO2
D
CO$$_3^{2 - }$$
4
JEE Main 2021 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following metals forms interstitial hydride easily?
A
Cr
B
Fe
C
Mn
D
Co
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