Antiseptics and disinfectants either kill orprevent growth of microorganisms. Give two examples of macromolecules that are chosen as drug targets. Explain the following terms giving one example for each: They give relief from pain. Name a broad spectrum antibiotic and state two diseases for which it is prescribed. Have you ever wondered why there is an expiration date on a bottle of drinking water, after all, it is just water isn’t it? (b)The antacids prevent the interaction of histamine with receptors present in stomach wall which results in lesser amount of acid. 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Dyes are coloured organic compounds that are used to impart colour to the various substrate, including paper, leather fur, hair drugs cosmetics. Important Questions for CBSE Class 12 Chemistry – Chemistry In Everyday Life 2015 – Value Based Questions [4 Marks] Question 1: Mamta, a housewife lives in Sonepat (Haryana). 19. (c)Tranquilizers are used in sleeping pills. When we fall in love, our brain suffers some changes and also certain chemical compounds are released. Also Read: Cleansing Action of Soaps and Detergents, Anionic Detergent: In this, anion acts as detergents. Answer : For example, Polyethylene glycol stearate. Answer : Give one example of each of them: Give one example of each.

(ii) Enzymes: Enzymes are biological catalyst which catalyse biochemical reactions, e.g. Write the name of an antacid which is often used as a medicine. Mr. Amit requests ‘ Naresh to stop this practice and takes him to a Yoga centre. Artificial Sweetness: These do not impart any calories to the body. A 0.2% solution of phenol is an antisepticwhile 1% solution acts as a disinfectant. (i) Refer Ans. Answer : to Q.22 (iii).

Answer :

to Q.23 (i). Soaps are sodium or potassium salt of higher carboxylic acid such as stearic acid, Palmitic acid and oleic acid whereas detergents contain a long chain of alkyl groups. (ii) Synthetic detergents

As a student, how can you spread awareness about this issue? (i) Food preservatives They create water pollution. JEE Mains aspirants may download it for free, and make a self-assessment by solving the JEE Main Chemistry in Everyday Life Important Questions Chemistry. Those compounds which kill or supress the growth of micro-organisms and are harmful for tissues are called antiseptics, e.g. 2C17H35COONa + Ca2+ > Ca(COOC17H35)2 + 2Na+. Explain the following terms giving an example of each: Those antibiotics which are effective against only particular micro-organism are called narrow spectrum antibiotics. Thus, when we pour away the water, the dirt particles wash away with the soap molecules.

to Q.22 (in). They are applied to living tissues. Tranquilizer drug? (b) It is iodine dissolved in alcohol. Explain the following terms with one example in each case: