Despite of various diagnostic test, a couple could not have a child. In this situtation, which remedies will you suggest ?

In which places have you seen a pulley ?

You have learnt about static electricity in the previous standard . Electrostatic force is a non contact force . To verify this , which experiment will you perform ?

Two test tubes contain two colourless liquids ethanol and ethanoic acid. Explain by writing reaction which chemical test you would perform to tell which substance is present in which test tube.

Which system of units have you used?

Which disasters have you experienced in your area?

In an electric circuit ,a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing ,then which tests will you perform in order to find out the reason for the bulb not glowing?

A child with mother of A group and father of AB group will not have which of the following group

Answer the following questions : In which instruments have you seen a lens ?

Answer the following questions in short: "A couple shall have a male child or female child totally depends upon husband." Prove truthfulness of this statement with scientific reason.

Find out various types of agrochemicals which have ill effects on ecosystem.