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Subjects
Science CBSE
Class 8
Chemical effects of electric current
Electric current and its chemical effects
2.
Conductors and conductivity of liquids: choose the correct answer
Exercise condition:
3
m.
Choose the correct answer
:
1
.
A tester is used to check __________.
the concentration of solutions
the conductivity of gases
the conductivity of materials
working of cells/battery
2
.
Good conductors are the solution of __________.
acid
base
salt
All of these
3
.
In LED, the shorter leads are connected to the __________.
positive terminal of the battery
negative terminal of the battery
Any of these
None of these
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