1
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the value of $\mathrm{pK}_{\mathrm{a}}$ if $0.1 \mathrm{M} \mathrm{CH}_3 \mathrm{COONa}$ and $0.01 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}$ are mixed to form buffer solution having pH 4.50 ?

A

5.5

B

5.5

C

6.5

D

2.5

2
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

What type of hybridisation is found in $\mathrm{H}_2 \mathrm{Se}$ ?

A

sp

B

$\mathrm{sp}^2$

C

$\mathrm{sp}^3$

D

$\mathrm{d}^2 \mathrm{sp}^3$

3
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following compounds is used as analgesics?

A

BHT

B

Methyl Salicylate

C

Gallic acid

D

Curcumin

4
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the osmotic pressure of 0.01 M aqueous solution of non electrolyte at 300 K .

$$ \left[\mathrm{R}=0.0821 \mathrm{~atm} \mathrm{dm}^3 \mathrm{~K}^{-1} \mathrm{~mol}^{-1}\right] $$

A

0.121 atm

B

0.246 atm

C

0.356 atm

D

0.412 atm