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

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.
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The reaction taking place in a galvanic cell is as given

$$\mathrm{A}(\mathrm{s})+\mathrm{B}^{2+}\left(\mathbf{1} \mathbf{1} \mathbf{1 0} \mathbf{0}^{-\mathrm{M}} \mathbf{M}\right) \rightarrow \mathrm{B}_{(\mathrm{s})}+\mathrm{A}^{2+}(0.1 \mathrm{M}).$$

The emf of the cell is $$+2.651 \mathrm{~V}$$. If the standard emf of the cell is $$+2.71 \mathrm{~V}$$, what is the value of $$\mathrm{X}$$ ?

A
X = 6
B
X = 2
C
X = 3
D
X = 4
4
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

What will be the emf of the following cell at 25$$^\circ$$C?

Fe/Fe$$^{2+}$$ (0.001 M) | | H$$^+$$ (0.01 M) | H$$_2$$(g) (1 Bar) | Pt(s)

$$E_{(F{e^{2+}} /Fe)}^o = - 0.44$$ V; $$E_{({H^ + }/{H_2})}^o = - 0.00$$ V

A
0.44 V
B
$$-$$0.44 V
C
0.41 V
D
$$-$$0.41 V
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