Write any two precaurtions neede while using a metre scale.

The precaution while measuring length with metre scale is-

Write any two applications of emulsions?

Write any two functions of stomata?

Write any two uses of PCR.

Write any two functions of water in our body?

Deduce the conditions for balance in a wheatstone bridge. Using the principle of Wheatstone bridge, describe the method to determine the specific resistane of a wire in the laboratory. Draw the circuit diagram and write the formula used. Write any two important precautions you would observe, while performing the experiment.