EASY
Earn 100

Give some examples for good solid conductors and liquid conductors.

Important Questions on Chemical Effects of Electric Current

EASY
Why are metals good conductors of electricity whereas glass is a bad conductor of electricity? Give reason.
EASY

What is a conductor of electricity? Give two examples.

EASY
Match the following
Column A Column B
(a). Human body (1). electric bell
(b). Silk thread (2). current
(c). Charge in motion (3). conductor
(d). Soft iron (4). electromagnet
(e). Electromagnet (5). insulator
EASY
A child staying in a coastal region tests the drinking water and also the seawater with his tester. He finds that the compass needle deflects more in the case of seawater. Can you explain the reason?
EASY
Distillation gives the purest form of water. Why do you think distillation is not used to get drinking water?
EASY
Pure liquids can be _____ (good / poor) conductors of electricity.
HARD
What is distilled water? What is it used for?
MEDIUM
Which wire having low resistance or high resistance can be used for connecting various components in an electrical circuit?
EASY
Electrolytes conduct electricity due to the movement of 
EASY
Does pure water conduct electricity? If not, what can we do to make it conducting?
MEDIUM
Select conductors and insulators from the following:
Glass, silver, copper, wood, paper, pure water, impure water, aluminium, iron, leather, plastic, steel, human body and ebonite.
EASY
Is it safe for the electrician to carry out electrical repairs outdoors during heavy downpour? Explain.
EASY
On which effect of current, electric bell is based?
EASY
Paheli had heard that rainwater is as good as distilled water. So, she collected some rainwater in a clean glass tumbler and tested it using a tester. To her surprise, she found that the compass needle showed deflection. What could be the reasons?
MEDIUM
Which energy transformation occurs during magnetic effect of current?
MEDIUM
When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason?
MEDIUM
The bulb does not glow in the setup shown in figure. List the possible reasons. Explain your answer.
MEDIUM
_____ water is used in laboratories to conduct experiments. (Distilled/Contaminated)