Q. How will you convert ethanol to ethyl fluoride?

Q. Express :3/20 as percent

Q. The subjective property of light related to its wavelength is ……….(colour, refractive index).

Q. A car runs using of petrol. How much distance will it cover using litres of petrol?

Q. What do you understand by the term non – stoichiometric hydrides? Do you expect this type of the hydrides to be formed by alkali metals? Justify your answer.

Q. Write a short note on the two groups of islands of India.

Q. Identify the correct statement from the following.

Q. Meaning of consecutive number

Q. The chemical formula of washing soda is:

Q. Name 7 sister states of India and their capitals.