Some liquids are ___________ conductors of electricity and some are poor conductors of electricity.

Distilled water when mixed with salts becomes a ___________ conductor of electricity.

Light emitting diodes (LED) glow even when a ___________ electric current flows through it.

The passage of an electric current through a conducting solution causes ___________.

Change in colour is an example of the ___________ effect of current.

There are ___________ wires attached to an LED.

In an LED, the longer lead is attached to the ___________ terminal of the battery and the shorter lead to the negative terminal.

Distilled water is made by removing all ___________.

Most liquids that conducts electricity are solutions of acids, bases and salts.

All liquids conduct electricity.

When electric current is passed through the copper sulphate solution, copper and sulphate ions are dissociated.

Which of the following is a good conductor?

Polythene is

Which of the following does not conduct electricity?

Which of the following is a bad conductor of electricity?

Copper is