1
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Which one of the following about an electron
occupying the 1s orbital in a hydrogen atom is
incorrect ?
(The Bohr radius is represented by a0)
(The Bohr radius is represented by a0)
2
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
The major products A and B for the following
reactions are, respectively:
A
B
C
D
3
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
During compression of a spring the work done
is 10kJ and 2kJ escaped to the surroundings as
heat. The change in internal energy, $$\Delta $$U(inkJ)
is :
4
JEE Main 2019 (Online) 9th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Increasing order of reactivity of the following
compounds for SN1 substitution is:
Paper analysis
Total Questions
Chemistry
21
Mathematics
21
Physics
28
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