1
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

500 mL of an aqueous solution of glucose $\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6$ (Molar mass $180 \mathrm{gmol}^{-1}$ ) contains $6.02 \times 10^{22}$ molecules.

The concentration of the solution will be:

A

2.0 M

B

1.0 M

C

0.1 M

D

0.2 M

2
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Identify the complex which exhibits all 3 characteristics; paramagnetic; high spin configuration; octahedral geometry

A

$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl}_2$

B

$\left[\mathrm{Ni}\left(\mathrm{H}_2 \mathrm{O}\right)_2\left(\mathrm{C}_2 \mathrm{O}_4\right)_2\right]^{2-}$

C

$\left[\mathrm{CO}\left(\mathrm{NH}_3\right)(\mathrm{Cl})(\mathrm{en})_2\right]^{2+}$

D

$\left[\mathrm{Ni}(\mathrm{CO})_4\right]$

3
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Identify the final product formed when benzenamine reacts with the given reagents in the sequential order as:

i. $\quad\left(\mathrm{CH}_3-\mathrm{CO}\right)_2 \mathrm{O} /$ Pyridine.

ii.      Conc. $\mathrm{HNO}_3+\mathrm{H}_2 \mathrm{SO}_4$ \& then reacted with $\mathrm{H}_3 \mathrm{O}^{+}$

iii. $\quad \mathrm{NaNO}_2 \mathrm{HCl}(273 \mathrm{~K})$ \& then reacted with $\mathrm{H}_3 \mathrm{PO}_2(\mathrm{aq})$.

A

2- Chloro- 4-Nitrophenol

B

4-Chloro-2-Nitroaniline

C

Nitrobenzene

D

4-Nitrophenol

4
COMEDK 2026 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Identify the law which is stated as "For any solutions, the partial vapour pressure of each volatile component in the solution is directly proportional to its mole fraction".

A

Raoult's law

B

Henry's law

C

Gay-Lussac's law

D

Dalton's law