Q. The female mosquito is not considered a parasite, although it needs our blood for reproduction. Explain why?

Q. Explain how bats use ultrasound to catch a prey.

Q. State whether the given set is empty or not? Set of even prime numbers

Q. Who was the winner of the contest?

Q. Give the example of man made and natural factors affecting the environment.

Q. Why do Zr and Hf have similar properties?

Q. Though wood is a renewable source of energy, but the use of wood as a fuel is not a wise decision. Explain.

Q. Define the following terms:(i) Glycosidic linkage(ii) Invert sugar(iii) Oligo saccharides

Q. What is polygamous? Give an example.

Q. Write short notes on the following: Principle of indemnity.