English Medium Class 9 - CBSE Question Bank Solutions for Science

Distinguish between micronutrients and macronutrients. Give suitable examples.

Classify nutrients according to their sources.

Name the process by which a drop of ink spreads in a beaker of water.

How plants get nutrients ?

Name three most important nutrients required for plant growth.

Choose plant’s micronutrients and macronutrients from the following Iron, Chlorine, Sulphur, Copper, Nitrogen, Calcium, Manganese, Potassium, Zinc, Magnesium, Molybdenum, Phosphorus.

 What are advantages of using manure ?

'A substance has definite volume but no definite shape'. State whether this substance is a solid, a liquid or a gas.

Give two limitations of using manure.

Compare the use of manures and fertilizers in maintaining soil fertility.

Write down two advantages of fertilizer over manure

During the downpour in a village, the rain water carried away excess of nitrogenous and other compounds present in the soil to a pond. How will they affect the growth of algae and phytoplankton in the pond ?

Explain the term eutrophication with suitable example

Name one property of liquids and gases which tells us that their molecules are moving constantly.

How does chemical nature of the soil change due to continued use of chemical fertilizers ?

Explain various methods of fertilizer application

Distinguish between farmyard manure and compost manure.

Fill in the following blank with suitable words :

The arrangement of particles is less ordered in the ______ state. However, there is no order in the ______ state. 

Define manure.

What is green manuring?