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1.
The conductivity of 
solution of 
in a cell at 250C is 
If the resistance of a cell containing this solution is 400 ohm, the cell constant is :
solution of in a cell at 250C is If the resistance of a cell containing this solution is 400 ohm, the cell constant is :
2.
The equilibrium constant for the reaction given below at 298 K is :
3.
When the sample of copper with zinc impurity is to be purified by electrolysis, the appropriate electrodes are
4.
A current of 12 A is passed through an electrolytic cell containing aqueous 
solution. Both Ni and 
gas are formed at the cathode. The current efficiency is 60%. What is the mass of nickel deposited on the cathode per hour?
solution. Both Ni and gas are formed at the cathode. The current efficiency is 60%. What is the mass of nickel deposited on the cathode per hour?
5.
g atom of Ag can be oxidised to 
during the electrolysis of 
solution using silver electrode by :
g atom of Ag can be oxidised to during the electrolysis of solution using silver electrode by :
6.
A gas 
at 1 atm is bubbled through a solution containing a mixture of 1 M 
and 1 M 
at 
If the order of reduction potential is 
then
at 1 atm is bubbled through a solution containing a mixture of 1 M and 1 M at If the order of reduction potential is then
7.
Which one of the following solutions will have highest conductivity?
8.
A current of strength 2.5 A was passed through 
solution for 6 min 26 s. The amount of copper deposited is (At. Wt. of Cu = 63.5, 1F = 96500 C)
solution for 6 min 26 s. The amount of copper deposited is (At. Wt. of Cu = 63.5, 1F = 96500 C)
9.
A student made the following observations in the laboratory,
i) Clean copper metal did not react with 1 molar
solution.
ii) Clean lead metal dissolved in a 1 molar solution and crystals of 
metal appeared.
iii) Clean silver metal did not react with 1 molar
solution.
The order of decreasing reducing character of the three metals is :
i) Clean copper metal did not react with 1 molar
solution.ii) Clean lead metal dissolved in a 1 molar
solution and crystals of metal appeared.iii) Clean silver metal did not react with 1 molar
solution.The order of decreasing reducing character of the three metals is :
10.
The e. m. f. of the cell 
is 1.1 volt. If the standard reduction potential of 
is 
volt, what is the oxidation potential of 
is 1.1 volt. If the standard reduction potential of is volt, what is the oxidation potential of