Why is it dangerous to touch a working electrical appliance with wet hands?

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.

Which of the following liquids conduct electricity and which do not conduct electricity?

Lemon juice, Milk, Vinegar, Common salt solution, Sulphuric acid solution, Sugar solution, Distilled water, Honey, Sea water, Rainwater.

What is the advantage of using LED in testing the electrical conductivity of liquids ?

Which effect of electric current is utilized for detecting the flow of current through a solution:

(a) when a torch bulb is used?

(b) when a compass is used?