Electricity And Circuits NCERT

When a Circuit is not complete , we say it is ________________

• Open

• Closed

• Incomplete

• None of these

Which of these are conductors

• Graphite

• Rubber

• Acid Solution

• Gas carbon

• Wood

An electric cell has ___________ terminals

• 1

• 2

• 3

• 4

• None of these

Which of these is an insulator

• rubber

• Insulator

• wet wood

• Wood

• Acid water

The objects that do not conduct electricity are called _______________

Paheli saw that there was rubber on top of the electric wires . Why was that so ?

• Rubber is an insulator

• Rubber is a conductor

• Rubber will melt

• None of these

Which of these are not insulators

• metal

• rubber

• graphite

• acetone solution

• wood

NACL (salt) when mixed with water , becomes ____________

• salt 

• sugar

• none of these

• NA+  CL-

• insulator 

HCL (Hydrochloric acid) when mixed with water , becomes ____________________

• Hydrochloric acid

• Hydrochloric acid solution

• HCL solution

• H+ CL-

• None of these

( Help Bhoojo ) What conducts electricity ?

• conductors

• insulators

• cell

• metals

• none of these