1
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the number of unit cells in 10.8 g metal $\left(\varrho a^3=7.2 \times 10^{-22} \mathrm{~g}\right)$

A
$1.5 \times 10^{22}$
B
$3.0 \times 10^{22}$
C
$4.5 \times 10^{22}$
D
$6.0 \times 10^{22}$
2
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate van't Hoff factor of 0.2 m aquesous solution of an electrolyte if it freezes at $-$0.7 K $\left[\mathrm{K}_{\mathrm{f}}=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}\right]$

A
1.304
B
1.123
C
1.432
D
1.882
3
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
$6.36 \times 10^{-24} \mathrm{~kg} \mathrm{~ms}^{-1}$
4
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following species acts as base ${ }^1$, according to Bronsted-Lowry theory?

$$\mathrm{HCl}+\mathrm{NH}_3 \text { 目的 } \mathrm{NH}_4^{+}+\mathrm{Cl}^{-} $$

A
$\mathrm{Cl}^{-}$
B
$\mathrm{NH}_3$
C
$\mathrm{NH}_4^{+}$
D
$\mathrm{HCl}$
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