NEET Chemistry Chemistry in Everyday Life Questions Solved


Explain the following terms giving one example of each type :                     (3 marks)

(i) Antacids                       (ii) Disinfectants                            (iii) Enzymes

 (i) Antacids : Those substances which neutralize the excess acid and raise the pH to an appropriate

      level in stomach are called antacids.

      Example : Sodium bicarbonate, Mg(OH)2


(ii) Disinfectants : Disinfectants are chemical compounds which kill microorganisms but are not

     safe when applied on living organisms.

     Example : Phenol, chlorine.


(iii) Enzymes : Enzymes are biological catalysts which are chemically globular proteins having high

      molecular mass and highly specific in their actions due to presence of active sites of definite

      shape and size on their surface so that only specific substrate can fit in them.

      Example : Pepsin, amylase.

Difficulty Level:

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