GENERAL KNOWLEDGE

Detailed explanation-1: -The most widely used bleach in the United States is liquid chlorine bleach, an alkaline aqueous solution of sodium hypochlorite. This bleach is highly effective at whitening fabrics and also provides germicidal activity at usage concentrations.

Detailed explanation-2: -Chlorine and its derivatives have the ability to oxidise coloured objects, thus making them colourless. Thus they find various applications as bleaching agents in the fabric and paper industry.

Detailed explanation-3: -Answer: Option C Solution: Most commonly used bleaching agent is chlorine.

Detailed explanation-4: -Hydrogen peroxide is best known for its bleaching reactions at alkaline pH in mechanical and chemical pulp bleaching as well as deinking. Hydrogen peroxide can also be used as a starting chemical for the production of peroxy acids.

Detailed explanation-5: -Hint: Chlorine can act as a bleaching agent due to the nascent oxygen it can produce in the reaction with water. Basically, one Cl atom gets oxidised and the other gets reduced when chlorine gas reacts with water. Complete answer: Bleaching process involves decolourization of the coloured materials.