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3 mL of ethanol is taken in a test tube and warmed gently in a water bath. A 5% solution of alkaline potassium permanganate is added first drop by drop to this solution, then in excess. (i) How is 5% solution ofKMnO4 prepared? (ii) State the role of alkaline potassium permanganate in this reaction. What happens on adding it in excess? (iii) Write chemical equation of this reaction.

(i) 5%  solution of KMn04 is prepared by dissolving 5 grams of KMnO4 in 100 ml of water. (ii) Alkaline potassium permanganate is adding oxygen to... View Article

Assertion (A): In the process of nuclear fission, the amount of nuclear energy generated by the fission of an atom of uranium is so tremendous that it produces 10 million times the energy produced by the combustion of an atom of carbon from coal. Reason (R): The nucleus of a heavy atom such as uranium, when bombarded with low-energy neutrons, splits apart into lighter nuclei. The mass difference between the original nucleus and the product nuclei gets converted to tremendous energy. (a) Both A and R are true and R is correct explanation of the Assertion. (b) Both A and R are true but R is not the correct explanation of the Assertion. (c) A is true but R is false. (d) A is false but R is true.

(a) Both A and R are true and R is correct explanation of the Assertion. Nuclear Energy 1. It is a non-conventional source of energy.  2. It is... View Article

Assertion (A): Esterification 1s a process m which a sweet smelling substance is produced. Reason (R): When esters relict with sodium hydroxide an alcohol and sodium salt of carboxylic acid are obtained. (a) Both A and R are true and R is correct explanation of the Assertion. (b) Both A and R are true but R is not the correct explanation of the Assertion. (c) A is true but R is false. (d) A is false but R is true.

(b) Both A and R are true but R is not the correct explanation of the Assertion. When alcohol is added to a carboxylic acid with sodium... View Article