Q. Explain four basic processes due to fluctuation in density of a population in a given habitat.

Q. Explain the principle of remuneration.

Q. Which sugar is called invert sugar? Why is it called so?

Q. What is the common name of: (a) methanoic acid, and (b) ethanoic acid?

Q. As a staff reporter for ‘The Times of India’, Delhi, you are asked to cover an incident of daylight robbery on the outskirts of Delhi, While the inmates were present in the house. Write a report in 100 – 125 words.

Q. Which non-metal has very high melting and boiling points?

Q. What is meant by ‘Residuary Powers’?

Q. Give two examples of Liquid element.

Q. Why did frederic Sorrieu present utopian vision in his prints in 1848? Explain one reason.

Q. Describe the triangular slave trade that was carried on in the eighteenth and nineteenth centuries.