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

Which of the following is always true about a spontaneous cell reaction in a galvanic cell?

A

$E_{\text {cell }}^o> 0 ; \Delta G^o<0 ; Q_C< K_C$

B

$E_{\text {cell }}^o=0 ; \Delta G^o<0 ; Q_C=K_C$

C

$E_{\text {cell }}^o< 0 ; \Delta G^o>0 ; Q_C< K_C$

D

$ E_{\text {cell }}^o>0 ; \Delta G^o<0 ; Q_C>K_C$

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

Resistance of 0.2 M solution of an electrolyte is $50 \Omega$. The conductivity of the solution is $1.3 \mathrm{Sm}^{-1}$. If the resistance of 0.4 M solution of the same electrolyte is $260 \Omega$, its molar conductivity is:

A

$6.25 \times 10^{-3} \mathrm{Sm}^2 \mathrm{~mol}^{-1}$

B

$62.5 \times 10^{-4} \mathrm{Sm}^2 \mathrm{~mol}^{-1}$

C

$6.25 \times 10^{-4} \mathrm{Sm}^2 \mathrm{~mol}^{-1}$

D

$625 \times 10^{-4} \mathrm{Sm}^2 \mathrm{~mol}^{-1}$

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

$$ \begin{aligned} &\text { Identify products }\left[\mathbf{P}_{\mathbf{1}}\right] \text { and }\left[\mathbf{P}_{\mathbf{2}}\right] \text { formed when Benzonitrile undergoes the following reactions. }\\ &\text { Benzo nitrile } \xrightarrow[\text { (ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {(i) } \mathrm{SnCl}_2 / \mathrm{HCl} / \text { ether }}[\mathrm{X}] \end{aligned} $$

COMEDK 2026 Afternoon Shift Chemistry - Aldehyde and Ketone Question 2 English

A

$$ \left[\mathrm{P}_1\right] \text { Phenol and }\left[\mathrm{P}_2\right] \text { Sodium benzoate } $$

B

$$ \left[\mathrm{P}_1\right] \text { Benzoyl chloride. and }\left[\mathrm{P}_2\right] \text { Acetophenone } $$

C

$$ \left[P_1\right] \text { Acetophenone. } \quad \text { and } \quad\left[P_2\right] \text { Benzoic acid } $$

D

$$ \left[\mathrm{P}_1\right] \alpha \text {-Hydroxy phenylacetic acid and }\left[\mathrm{P}_2\right] \text { Benzyl alcohol } $$

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

Choose the incorrect statement.

A

Cyclic $\mathrm{C}_4 \mathrm{H}_7 \mathrm{OH}$ exists as four structural isomers

B

p- Nitrophenol is more acidic than p- Cresol

C

Relative ease of dehydration of alcohols on heating with a protic acid is Primary $>$ Secondary $>$ Tertiary

D

Reaction of alcohols with anhydrides is carried out in the presence of small amounts of Conc. $\mathrm{H}_2 \mathrm{SO}_4$ to remove the water formed