1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

One litre solution of $$\mathrm{MgCl}_2$$ is electrolysed completely by passing a current of $$1 \mathrm{~A}$$ for $$16 \mathrm{~min} 5 \mathrm{~sec}$$. The original concentration of $$\mathrm{MgCl}_2$$ solution was (Atomic mass of $$\mathrm{Mg}=24$$ )

A
$$5 \times 10^{-3} \mathrm{M}$$
B
$$5 \times 10^{-2} \mathrm{M}$$
C
$$0.5 \times 10^{-3} \mathrm{M}$$
D
$$1.0 \times 10^{-2} \mathrm{M}$$
2
KCET 2019
MCQ (Single Correct Answer)
+1
-0

An aqueous solution of $$\mathrm{CuSO}_4$$ is subjected to electrolysis using inert electrodes. The $$\mathrm{pH}$$ of the solution will

A
increase
B
remains unchanged
C
decrease
D
increase or decrease depending on the strength of the current
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Give $$E_{\mathrm{Mn}^{+7} \mid \mathrm{Mn}^{+2}}^0=1.5 \mathrm{~V}$$ and $$E_{\mathrm{Mn}^{+4}\mid \mathrm{Mn}^{+2}}^0=1.2 \mathrm{~V}$$, then $$E_{\mathrm{Mn}^{+7} \mid \mathrm{Mn}^{+4}}^0$$ is

A
0.3 V
B
0.1 V
C
1.7 V
D
2.1 V
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Addition of excess of $$\mathrm{AgNO}_3$$ to an aqueous solution of 1 mole of $$\mathrm{PdCl}_2 \cdot 4 \mathrm{NH}_3$$ gives 2 moles of $$\mathrm{AgCl}$$. The conductivity of this solution corresponds to

A
$$1: 1$$ electrolyte
B
$$1: 3$$ electrolyte
C
$$1: 2$$ electrolyte
D
$$1:4$$ electrolyte
KCET Subjects
EXAM MAP