The use of dry wood as domestic fuel is not considered as good. State two reasons.

Although potato tuber is an understand part, it is considered as stem. Give two reasons.

Explain why burning of wood and cutting it into small pieces are considered as two different types of changes.

What is amniocentesis ? State two uses of amniocentesis.

Which way of using cow-dung as fuel for domestic use is better:use of cow-dung cakes or use of cow-dung in a bio-gas plant?give three reasons in support of your answer

Why is coke considered a better fuel than coal? Give four reasons.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: Vascular cambium is considered as lateral. Reason. It gives rise to lateral shoots.

Why charcoal is considered better fuel than wood?