Q. Describe prophase – I of meiosis.

Q. Was Bruno a loving and playful pet? Why, then, did he have to be sent away?

Q. Give scientific reasons:Elements belonging to the same group have the same valency.

Q. Classify the following fibers as ‘natural’ or ‘synthetic’: Nylon, Wool, Cotton, Silk, Polyester, Jute.

Q. What is the full form of LNG? List out its characteristics.

Q. Where the mountain forests are commonly found in India?

Q. What are food preservatives? Name two such substances.

Q. What is a polysome?

Q. What is meant by ‘doping’ in a semiconductor?

Q. Name the S. I. unit of time and define it.