किस विकल्प में

Which of the following statements is incorrect?

The time period of a second’s pendulum is –

Among the following materials, which is not an insulator?

One Astronomical Unit (AU) is the average distance between-

Which statement about Cathode Rays is incorrect ?

The important unit of a microprocessor is –

Which of the following wind is also known as “ICE HEATER?”

Sound of frogs can be heard from a long distance in a rainy season because

Which of the following dyes is used for colouring Paper and typewriters?

When two charged bodies are properly connected but do not exchange electric current, it indicates that they have the same _____.