1
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Match the items in Column I with their description in Column II

S.No. Column I S.No. Column II
A Kappa K P Intensive property.
B $$\mathrm{E_{cell}^0}$$ Q Extensive property.
C Molar conductivity R Decreases with decrease in concentration of both strong and weak electrolytes.
D $$\mathrm{\Delta G_{cell}}$$ S Increases with dilution.

A
$$ \mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{Q} \quad \mathrm{C}=\mathrm{S} \quad \mathrm{D}=\mathrm{P} $$
B
$$ \mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{P} \quad \mathrm{C}=\mathrm{S} \quad \mathrm{D}=\mathrm{Q} $$
C
$$ \mathrm{A}=\mathrm{Q} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{R} $$
D
$$ \mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{R} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{P} $$
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

Choose the incorrect statement.

A
$$\mathrm{m}$$ - Cresol is a weaker acid than Phenol.
B
Acidic nature of Phenol is due to -I effect of oxygen of the hydroxyl group.
C
Acetylation of Salicylic acid produces 2-Acetoxybenzoic acid.
D
Phenol on heating with Conc. $$\mathrm{H}_2 \mathrm{SO}_4$$ yields sulphanilic acid.
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

When Lead Storage battery is in the process of getting charged which one of the following reactions takes place?

A
$$\mathrm{PbO}_{2(s)}$$ is reduced.
B
$$\mathrm{PbSO}_{4(\mathrm{~s})}$$ gets converted to $$\mathrm{Pb}_{(\mathrm{S})}$$ and $$\mathrm{PbO}_{2(\mathrm{~s})}$$
C
$$\mathrm{SO}_3$$ gas gets liberated and $$\mathrm{PbO}_{2(\mathrm{~s})}$$ is formed.
D
$$\mathrm{Pb}_{(\mathrm{S})}$$ gets consumed.
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The group number of the element in the periodic table with the electronic configuration $$(\mathrm{n}-1) \mathrm{d}^2 \mathrm{~ns}^2$$. For $$n=4$$ is:

A
4
B
13
C
3
D
5
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