CUET Level-I NEET Mock Test-2Chemistry(2024-2025)

In Phosphorus atom find out the no. of paired electrons for ⋏= 1 and m = 0:

• 3

• 1

• 2

• 0

What is the ratio of the de-Broglie wavelengths for electrons accelerated through 200 volts and

50 volts:

• 1:2

• 2:1

• 3:10

• 10:3

In an atom, for how many electrons, the quantum numbers will be, n = 3, l= 2, m = + 2, s = +1/2

• 18

• 6

• 24

• 1

Four quantum numbers of unpaired electrons of chlorine are:

• n=3,l=2,m=0,s=+1/2

• n=3,l=1,m=0,s=+1/2

• n=3,l=1,m=+1,s=0

• n=3,l=0,m=-1,s=+1/2

Four quantum numbers of unpaired electrons of chlorine are:

• n=3,l=2,m=0,s=+1/2

• n=3,l=1,m=0,s=+1/2

• n=3,l=1,m=+1,s=0

• n=3,l=0,m=-1,s=+1/2

A neutral atom of an element has 2K, 8L, 11M and 2N electrons. The number of s-electron in the

atom are

• 2

• 8

• 10

• 6

The total value of m for the electrons (n = 4) is -

• 4

• 8

• 16

• 32

n and l values of an orbital 'A' are 3 and 2, of another orbital 'B' are 5 and 0. The energy of

• B is more than A

• A is more than B

• A and B are of same energy

• None

No. of all subshells of n + l = 7 is:

• 4

• 5

• 6

• 7

Sum of the paired electrons present in the orbital with l = 2 in all the species Fe²⁺, Co²⁺ and Ni⁺²

are:

• 9

• 12

• 6

• 15