Question

Fill in the following blanks with suitable words:
(a) Most liquids that conduct electricity are solutions of ..........., ......... and ............
(b) LED glows even when a ..............electric current passes through it.
(c) The passage of an electric current through a conducting solution causes.............effect.
(d) When electric current is passed through acidified water, then ........and...........are formed.
(e) The process of depositing a layer of any desired metal on another metal by means of electricity is called ..........
(f) If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ............terminal of the battery.

Answer 1

Answer:

1. metal., acid, ionic compound
2. low
3. tyndal
4. oxygen and hydrogen
5. electro plating
6. anode

Answer 2

Fill in the following blanks with suitable words:

(a) Most liquids that conduct electricity are solutions of acids, bases and salt.

(b) LED glows even when a weak electric current passes through it.

(c) The passage of an electric current through a conducting solution causes chemical effect.

(d) When electric current is passed through acidified water, then hydrogen and oxygen are formed.

(e) The process of depositing a layer of any desired metal on another metal by means of electricity is called electroplating.

(f) If you pass current through copper sulfate solution, copper gets deposited on the plate connected to the negative terminal of the battery.

Explanation:

• The liquid conduct electricity when the liquids undergo ionization process. These liquids are called conducting liquids.
• Light emitting diode can glow when weak amount of electric current passes through it.
• The chemical effect of electric current is responsible for all electrochemical process taking place in electrolysis and electroplating.
• When current is passed through acidified water, then chemical reaction takes place in water. It liberates hydrogen and oxygen gas.
• Electroplating is done to reduce corrosion and toxicity of the metal. It is also used for decorative purpose.
• The metal formed during electrolysis is deposited on the anode of electrodes.