Electrochemistry Test Paper 03 Class 12 Notes | EduRev

Class 12 : Electrochemistry Test Paper 03 Class 12 Notes | EduRev

 Page 1


CBSE TEST PAPER-03 
CLASS - XII CHEMISTRY (Electrochemistry) 
Topic: -Conductance, Equivalent – conductance and Molar conductance 
1. Define the term – Resistivity? [1] 
2. Give the unit of conductance? [1] 
3. What do you understand by the term- conductivity? [1] 
4. What are the factors on which conductivity of an electrolyte depend? [2] 
5. How is molar conductance related to conductivity of an electrolyte ? [1] 
6. Write an expression relating cell constant and conductivity? [1] 
7. The conductivity of an aqueous solution of NaCl in a cell is 92 
1 -1
 cm
- O the
resistance offered by this cell is 247.8 O . Calculate the cell constant? [2] 
8. The molar conductivity of 0.1M CH 3COOH solution is 4.6 cm
2  
mol
-1
.
What is the conductivity and resistivity of the solution? [2] 
9. The conductivity of metals decreases while that of electrolytes increases
with increases in temperature. Why? [2] 
10. The measured resistance of a cell containing 7.5 x 10
-3 
M solution of KCl at
25
0
C
 
was 1005 O calculate
(a) Specific conductance and
(b) Molar conductance of the solution.  Cell Constant = 1.25 cm
-1
[2] 
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