1
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

The entropy of vaporisation of benzene is $85 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}$. When 117 g of benzene vaporises at its boiling point, what is entropy change of surrounding if process is at equilibrium?

A
$-85 \mathrm{~J} \mathrm{~K}^{-1}$
B
$-85 \times 1.5 \mathrm{~J} \mathrm{~K}^{-1}$
C
$85 \times 1.5 \mathrm{~J} \mathrm{~K}^{-1}$
D
$42.5 \mathrm{~J} \mathrm{~K}^{-1}$
2
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which from the following equations represents the relation between solubility ( $\mathrm{mol} \mathrm{L}^{-1}$ ) and solubility product for the salt $\mathrm{B}_2 \mathrm{~A}$ ?

A
$\mathrm{S}=\left(\frac{\mathrm{K}_{\mathrm{sp}}}{4}\right)^{1 / 3}$
B
$\quad \mathrm{S}=\left(4 \mathrm{~K}_{\mathrm{sp}}\right)^{1 / 3}$
C
$\quad \mathrm{S}=\left(\frac{\mathrm{K}_{\mathrm{sp}}}{3}\right)^{1 / 3}$
D
$\quad \mathrm{S}=\left(3 \mathrm{~K}_{\mathrm{sp}}\right)^{1 / 3}$
3
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
What is the number of chiral carbon atoms and number of formyl groups respectively present in ribose?
A
2 and 2
B
2 and 1
C
3 and 1
D
3 and 2
4
MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the Henry's law constant at $25^{\circ} \mathrm{C}$ if solubility of gas in liquid is $2.1 \times 10^{-2} \mathrm{~mol} \mathrm{dm}^{-3}$ at 0.18 bar.

A
$0.1166 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{bar}^{-1}$
B
$0.1445 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{bar}^{-1}$
C
$0.1730 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{bar}^{-1}$
D
$0.2014 \mathrm{~mol} \mathrm{dm}^{-3} \mathrm{bar}^{-1}$
EXAM MAP