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(a) Why is bithional added to soap ? (...

(a) Why is bithional added to soap ?
(b) What is tincture of iodine ? Write its one use.
(c) Among the following , which one acts as a food preservative ?
Aspartame , Aspirin , Sodium Benzoate , Paracetamol

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(a) Bithional is a disinfectant and used as an antiseptic in medicated soap .
(b) Tincture of iodine is 2-3% solution of iodine in alcohol and water . It is a powerful antiseptic and applied on wounds .
(c) Sodium Benzoate acts as a food preservative .
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XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-Questions
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  10. (A), (B) and (C ) are three non-cylic funtional isomers of a carbonyl ...

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  11. (a) Why is bithional added to soap ? (b) What is tincture of iodine ...

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  12. Define the following with an example of each : (a) Polysaccharides ...

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