Q. (A) When NaCl is added to water, a depression in freezing point is observed.(B) The lowering of vapour pressureof a solution causes depression in the freezing point.

Q. Why is depreciation charged?

Q. Nitric acid reacts with metals to make which type of salt?

Q. Give the complete name for PHBV . How it is useful?

Q. Give reasons for the following:Alkali metals are good reducing agents.

Q. “Fayol’s principles of equity and order can be applied in actual work situations.” Do you agree?

Q. Write uses of Bakelite.

Q. Very Short Answer type Question.Give examples of young fold mountains.

Q. Explain the term perianth.

Q. How can you identify the seeds as monocotyledon and dicotyledon seeds?