AIPMT 2010 Prelims | Electrochemistry Question 44 | Chemistry

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

For the reduction of silver ions with copper metal, the standard cell potential was found to be + 0.46 V at 25^oC. The value of standard Gibb's energy, $$\Delta $$G^o will be
(F = 96500 C mol^$$-$$1)

$$-$$ 89.0 kJ

$$-$$ 89.0 J

$$-$$ 44.5 kJ

$$-$$ 98.0 kJ

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to

increase in ionic mobility of ions

100% ionisation of electrolyte at normal dilution

increase in both i.e., number of ions and ionic mobility of ions

increase in number of ions.

AIPMT 2009

MCQ (Single Correct Answer)

-1

Al₂O₃ is reduced by electrolysis at low potentials and high currents. If 4.0 $$ \times $$ 10⁴ amperes of current is passed through molten Al₂O₃ for 6 hours, what mass of aluminium is product? (Assume 100% current efficiency, at mass of Al = 27 g mol^$$-$$1).

8.1 $$ \times $$ 10⁴ g

2.4 $$ \times $$ 10⁵ g

1.3 $$ \times $$ 10⁴ g

9.0 $$ \times $$ 10³ g

AIPMT 2009

MCQ (Single Correct Answer)

-1

The equivalent conductance of M/32 solution of a weak monobasic acid is 8.0 mho cm² and at infinite dilution is 400 mho cm². The dissociation constant of this acid is

1.25 $$ \times $$ 10^$$-$$6

6.25 $$ \times $$ 10^$$-$$4

1.25 $$ \times $$ 10^$$-$$4

1.25 $$ \times $$ 10^$$-$$5

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