Q. What is a chemical change? Explain with examples.

Q. Define population and community.

Q. Name the state where Kandla sea port is located.

Q. Write various steps for processing fibers into wool.

Q. Compare and contrast the arrangement of elements in Mendeleev’s periodic table and the Modern periodic table.

Q. What is the valency of : Sulphur in SF6

Q. What is fertilisation? Name the cell formed as a product of fertilisation.

Q. Essay on my favourite animal rabbit.

Q. What is meant by the term chemical formula?

Q. Define mixed cropping.