Subject :NSO Class : Class 3
Which of the following proves that soil contains air?
A When small amount of soil is heated in a container, then some water vapour is seen
escaping from it.
B If we put some water in a soil sample, we could see small bubbles over the soil surface.
C Plant dies in water logged soil because its roots cannot respire as all the air in soil pores
is replaced by water.
D Both B and C
d
Ans 1:
Class : Class 3
D)
Ans 2:
Class : Class 3
D
Ans 3:
Class : Class 3
when we put some water in a soil surface, we cold see small bubbles on the soil surface.
Ans 4:
Class : Class 3
If we in a soil sample, we would see small bubbles on the soil sample.
Ans 5:
Class : Class 4