The insecticide containing 99% γ–isomer of benzene hexachloride is known as

Various phenol derivatives, tincture of iodine (2 – 3%) I₂ in(water / alcohol) and some dyes like methylene blue are

Solution

Antiseptic drugs cause destruction of micro-organism that produce septic disease e.g. Dettol, Savlon, Boric acid, Phenol, Iodoform, KMnO₄ and some dye such as methylene blue, genation violet.

Which of the following is used as a ‘morning after pill’

Salol can be used as

An antipyretic is

Aspirin is

Solution

Aspirin is antipyretic i.e., a drug which is responsible for lowering the temperature of feverish organism to normal, other antipyretic drugs are Paracetamol,Phenacetin.

Synthetic detergents are more effective in hard water than soaps because

Solution

Structural features of soaps and detergents are almost same except that the polar end in detergents is \(-OSO_{3}^{-}Na^{+}\) while in soaps polar end is -COO^-Na⁺.Detergents have an advantage over soaps that its polar end sulphate and sulphonate retain their efficiency in hard water, since the corresponding Ca and Mg salts are soluble. Being salts of strong acids, they yield neutral solution, in contrast, to the soaps, which being salts of weak acids yield slightly alkaline solutions.

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