1
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Which one among the following resonating structures is not correct?
A
B
C
D
2
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
The correct order of following 3d metal oxides, according to their oxidation numbers is :
(a) CrO3, (b) Fe2O3, (c) MnO2, (d) V2O5, (e) Cu2O
(a) CrO3, (b) Fe2O3, (c) MnO2, (d) V2O5, (e) Cu2O
3
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Which one of the following compounds will liberate CO2, when treated with NaHCO3 ?
A
$${(C{H_3})_3}\mathop {NH}\limits^ \oplus \mathop {Cl}\limits^\Theta $$
B
$${(C{H_3})_4}\mathop N\limits^ \oplus \mathop O\limits^\Theta H$$
C
D
$$C{H_3}N{H_2}$$
4
JEE Main 2021 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
An organic compound 'A' C4H8 on treatment with KMnO4/H+ yields compound 'B' C3H6O.
Compound 'A' also yields compound 'B' an ozonolysis. Compound 'A' is :
Compound 'A' also yields compound 'B' an ozonolysis. Compound 'A' is :
Paper analysis
Total Questions
Chemistry
23
Mathematics
22
Physics
26
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