9th class science final exam questions paper 2021
Answers
1.
Name the process which occurs when a drop of Dettol is added to water.
2.
Where is apical meristem found?
3.
Which law of motion gives the measure of force?
4.
Give reasons why the smell of hot sizzling food reaches you several meters away, but to get
the smell from cold food you have to go close.
5.
Why the cell is called the structural and functional unit of life?
6.
Gravitational force acts on all objects in proportion to their masses. Why then, a heavy
object does not fall faster than alight object?
7.
What are the characteristics of the particles of matter?
8.
What is the utility of tissues in multi-cellular organisms?
9.
What are the functions of areolar tissue?
10. Differentiate between mass and weight?
11. How do biotic and abiotic factors affect crop production?
12. A solution contains 60g of NaCl in 400g of water. Calculate the concentration in term of
mass by mass percentage of the solution.
13. Write a method to separate a mixture of salt and ammonium chloride?
14. The radius of earth is 6370Km and of mars is 3400 Km. If an object weighs 200N or earth,
what will be its weight on mars. The mass of mars is 0.11 that of earth.