Think and list the various activities in which we need water.

A stone allowed to fall from the top of a well hit the water surface after 1 second. find out: the velocity with which of stone hit the water surface.

Which of the following is not correct: A unicellualr organism carries out its life activities within a single cell.

Discuss the various factors which affect the decreasing oxidising ability of the halogens in aquous soln.

Consider the various options we have when we choose a fuel for cooking our food.

An optically active amide (A)C_5H_(11)NO on acid hydrolysis gives an acid and NH_3 . When (A) is treated with bromide and alkali a compound is obtained which one treatment with nitrous acid gives an optically active alcohol and nitrogen. The alcohol gives positive iodoform test. What is the structure of A and show the reactions involved.