3. The device which can detect current at very low voltages in an electric circuit is
(a) MCB
O (b) LED O (c) lead O(d) bulb
4. The electrode connected to the
terminal of a cell is called anode.
(a) positive O (
(b) negative O (c) both of these O(d) none of these
B. Circle the odd ones. Give reasons for your choice:
plastic
wood
glass
lemon juice
distilled water
tap water
3. alcohol
petrol
tap water
C. Fill in the blanks:
A chemical compound when dissolved in water is called its
solution.
The decomposition of an electrolyte, when electric current is passed through it, is called
1.
2.
graphite
vinegar
kerosene oil
1.
2.
3.
The chemical reaction taking place when an electric current passes through an electrolyte is called
effect of electric current.
4. The method of coating the metal's surface with superior metal with the help of electric current is
called
A.
HHHG
Multiple Choice Questions (MCQs) Scientific/Practical skills:
Look at the figure given alongside and tick) the correct options:
In this activity a thin shoot of connom
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