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

Which of the following cations is involved in formation of chlorophyll molecule in plants?

A

$\mathrm{Na}^{+}$

B

$\mathrm{Sr}^{2+}$

C

$\mathrm{Mg}^{2+}$

D

$\mathrm{Ca}^{2+}$

2
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

3
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

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

4
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