NEET Chemistry Chemistry in Everyday Life Questions Solved

BOARD

What are the following substances ? Give one example of each of them.           (3 marks)

 (i) Cationic detergents

(ii) Enzymes

(iii) Sweetening agents

 (i) Cationic detergents : They are quaternary ammonium salts of amines with acetates,

      chlorides or bromides as anions and the cationic part possess a long hydrocarbon chain, and a

      positive charge on nitrogen atom. Therefore they are called cationic detergents.

      Example :  Cetyltrimethyl ammonium bromide

                                                       

 

(ii) 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 surfaces so that only specific substrate can fit in them.

     Example : Pepsin, amylase

 

(iii) Sweetening agents : Those chemical substances which are sweet in taste but do not add any

      calories to our body are called artificial sweetening agents. These are excreted as such through

      urine.

      Example : Saccharin, aspartame etc.

Difficulty Level:

  • 88%
  • 10%
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