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Questions
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1
JEE Main 2020 (Online) 2nd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
The number of subshells associated with n = 4 and m = –2 quantum numbers is
A
8
B
2
C
16
D
4
2
JEE Main 2020 (Online) 2nd September Morning Slot
MCQ (Single Correct Answer)
+4
-1
The figure that is not a direct manifestation of the quantum nature of atoms is :
A
JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Structure of Atom Question 82 English Option 1
B
JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Structure of Atom Question 82 English Option 2
C
JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Structure of Atom Question 82 English Option 3
D
JEE Main 2020 (Online) 2nd September Morning Slot Chemistry - Structure of Atom Question 82 English Option 4
3
JEE Main 2020 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The de Broglie wavelength of an electron in the 4th Bohr orbit is :
A
2$$\pi $$a0
B
6$$\pi $$a0
C
8$$\pi $$a0
D
4$$\pi $$a0
4
JEE Main 2020 (Online) 8th January Evening Slot
MCQ (Single Correct Answer)
+4
-1
The radius of the second Bohr orbit, in terms of the Bohr radius, a0, in Li2+ is :
A
$${{2{a_0}} \over 9}$$
B
$${{2{a_0}} \over 3}$$
C
$${{4{a_0}} \over 9}$$
D
$${{4{a_0}} \over 3}$$
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