English Medium Class 9 - CBSE Question Bank Solutions

A major source of minerals in the soil is the

Soil erosion can be prevented by

How can we prevent the loss of topsoil?

Following are a few organisms

(a) lichen (b) mosses (c) mango tree (d) cactus Which among the above can grow on stones; and also help in the formation of soil? Write the mode of their action for making soil.

Soil formation is done by both abiotic and biotic factors. List the names of these factors by classifying them as abiotic and biotic?

Lichens are called pioneer colonisers of bare rock. How can they help in the formation of soil?

“Soil is formed by water.” If you agree to this statement then give reasons

Fertile soil has lots of humus. Why?

Why step farming is common in hills?

Explain the role of the Sun in the formation of soil.

Carbon dioxide is necessary for plants. Why do we consider it a pollutant?

Poultry farming is undertaken to raise the following

1. Egg production
2. Feather production
3. Chicken meat
4. Milk production

Poultry fowl are susceptible to the following pathogens

Causal organism of any disease is called as ______.

Differentiate between the following

Beekeeping and Poultry farming

Suggest some preventive measures for the diseases of poultry birds

State which of the following situation is possible and give an example:

An object moving with an acceleration but with uniform speed.

State which of the following situation is possible and give an example:

An object moving in a certain direction with an acceleration in the perpendicular direction.

How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25°C), which are miscible with each other?

How would you confirm that a colourless liquid given to you is pure water?