From which plant part we can use to make gum, mosquito repellent, tyre of cycle and varnish?

Name the part of plant used to make your bag or your dress.

From which method can we know the amount of food produced by the country?

State the nature of CO, Geo. SnO, & PbO. Which allotrope of carbon isured to make super conductor. Why Co can’t be dried using Concentrated H_2SO_4 .

In has been estimated that the total energy radiated by the sun is 3.8xx10^26 J per second. The source of energy of stars is a thermonuclear reaction called nuclear fusion. Fusion reactions are not controlled. It is presumed that the energy of stars is due to two processes called proton-proton cycle and carbon nitrogen cycle. Fusion cannot take place at ordinary temperature. This, hydrogen bomb uses a small fission bomb, which on explosion causes the temperature to rise very high about 10^7 K. We have yet to see how a hydrogen bomb can be used for peaceful life-sustaining purpose. Energy released in the process of fusion is due to mass defect. It is also called Q-value. Q =Deltamc^2 , Deltam= mass defect Answer the following questions based on above passage: Fusion reaction takes place at about:

In India In a plant herbarium, mostly to arrange plants, we make use of

Your grandmother is suffering from high pressure. Determine which plant can be used to make medicine for such disease.

Shankar made the following pictures also. What shapes can they be broken into, of which we can find area easily ? Make some more pictures and think of the shapes they can be divided into different parts.

Which of the following can be used as a bio control agent in the treatment of plant disease?

Which part of the plant is best suited for making virus-free plants and why?