1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Match List-I with List-II :

List-I
(quantum number)
List-II
(orbital)
(a) n = 2, l = 1 (i) 2s
(b) n = 3, l = 2 (ii) 3s
(c) n = 3, l = 0 (iii) 2p
(d) n = 2, l = 0 (iv) 3d

Choose the correct answer from the options given below :

A
(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
B
(a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
C
(a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
D
(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

When electromagnetic radiation of wavelength 300 nm falls on the surface of a metal, electrons are emitted with the kinetic energy of 1.68 $$\times$$ 105 J mol$$-$$1. What is the minimum energy needed to remove an electron from the metal?

(h = 6.626 $$\times$$ 10$$-$$34 Js, c = 3 $$\times$$ 108 ms$$-$$1, NA = 6.022 $$\times$$ 1023 mol$$-$$1)

A
2.31 $$\times$$ 105 J mol$$-$$1
B
2.31 $$\times$$ 106 J mol$$-$$1
C
3.84 $$\times$$ 104 J mol$$-$$1
D
3.84 $$\times$$ 10$$-$$19 J mol$$-$$1
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Identify the incorrect statement from the following.

A
All the five 5d orbitals are different in size when compared to the respective 4d orbitals.
B
All the five 4d orbitals have shapes similar to the respective 3d orbitals.
C
In an atom, all the five 3d orbitals are equal in energy in free state.
D
The shapes of dxy, dyz and dzx orbitals are similar to each other; and dx2 $$-$$ y2 and dz2 are similar to each other.
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

If radius of second Bohr orbit of the He+ ion is 105.8 pm, what is the radius of third Bohr orbit of Li2+ ion?

A
158.7 pm
B
15.87 pm
C
1.587 pm
D
158.7 $$\mathop A\limits^o $$
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