Question

Give one word for the following questions

1. A gas which protects the earth from the harmful ultraviolet radiations of the sun .

2. Name a gas which is supporter of combustion .

3. Name the factor on which loudness of a sound depends .

4. What is force acting on a surface per unit area called?

5. Name the most important part of a cell .

6.Name a chemical preservative.

7. Name a communicable disease .

8. Name one liquid which conducts electricity .

9. Write one example of chemical effects of electric current​

Answer 1

Answer:

1) UV rays

2) oxygen

3)pitch

4) Pressure

5)nucleus

6)Ch3CooH

7)Aids

8) Mercury

9)it causes sparks