P-2 Environmental management — Science STD 10 — Question

You know that as we go higher than the sea level, the boiling point of water decreases. What would be the effect on the melting point of a solid?

What effect does the concentration of H ions have on the nature of a solution?

What is an indicator? Name three common indicators.

What is graphite? Of what substance is graphite made?

The electrolysis of an aqueous solution of sodium chloride gives us three products. Name them.

Rewrite the following wrong statements after corrections: Malaria arises due to genetic changes in hepatocytes.

A sample of rain water turned universal indicator paper yellow. What would you expect its pH to be? Is it a strong or a weak acid?

What would happen if there were no gravity?

Usually three insulated wires of different colours are used in an electrical appliance. Name the three colours.

Where does all the energy in living organisms originate from?