What are the changes of state in water? Explain.

List the safety features while handling with electricity.

Explain two types of transformer.

Discuss in brief about the properties of Coordinate covalent compounds.

Write any five uses of salts.

Explain the structure of kidney and the steps involved in the formation of urine

If you put one ice cube in a glass of water and another in a glass of alcohol, what would you observe? Explain your observations.

Explain how does SONAR work?

Write a note on orbital velocity.

When a carbon fuel burns in less aerated room, it is dangerous to stay there. Why?

Sudha met with a fire accident. What kind of drug(s), she must take?

What are the conditions in a dry habitat to which plants develop adaptations? List out the adaptations of xerophytes?

Give an account of different types of fish ponds used for rearing fishes.

Explain the various types of viruses with examples.