1
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the amount of energy associated with first orbit of monopositive helium ion? $\left[\mathrm{R}_{\mathrm{H}}=2.18 \times 10^{-18} \mathrm{~J}\right]$

A
$-1.9 \times 10^{-18} \mathrm{~J}$
B
$-4.36 \times 10^{-18} \mathrm{~J}$
C
$-6.54 \times 10^{-18} \mathrm{~J}$
D
$-8.72 \times 10^{-18} \mathrm{~J}$
2
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

What is the representation of an element having mass number of 40 and 21 neutrons in it?

A
${ }_{18}^{40} \mathrm{X}$
B
${ }_{19}^{40} \mathrm{X}$
C
${ }_{12}^{40} \mathrm{X}$
D
${ }_{20}^{40} \mathrm{X}$
3
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following orbitals have same value of $(\mathrm{n}+l)$ as that of 3 d orbital?

A
4s
B
3s
C
4p
D
2p
4
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is momentum of a microscopic particle having de Broglie's wavelength 6.0 A?

$$\left(\mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}\right)$$

A
$4.6 \times 10^{-24} \mathrm{~kg} \mathrm{~ms}^{-1}$
B
$1.1 \times 10^{-24} \mathrm{~kg} \mathrm{~ms}^{-1}$
C
$3.18 \times 10^{-24} \mathrm{~kg} \mathrm{~ms}^{-1}$
D
$6.36 \times 10^{-24} \mathrm{~kg} \mathrm{~ms}^{-1}$
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