JEE Main Test 4

Result

JEE Main Test 4

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

Enthalpy of fusion of a liquid is 1.435 kcal mol^-1 and molar entropy change is 5.26 cal mol^-1 K^-1. The melting point of liquid is:

A
100°C

B
0°

C
373 K

D
-273°C

Solution

ΔS=ΔH/T

T=ΔH/ΔS= 1453 cal/5.26 =273K =0°C
Question 2
4 / -1

The maximum number of electrons that can be accommodated in the M^thshell is

A
2

B
8

C
18

D
32

Solution

For Mth shell the principal quantum number (n) = 3.

Hence all possible orbitals with n = 3 are: 3s, 3p, 3d.

3s can have 2 electrons.

3p can have 6 electrons.

3d can have 10 electrons.

Therefore, total electrons in Mth shell = 2 + 6 +10 = 18