The structure of redworms which helps them in grinding food is

  1. Blizzard
  2. Lizard
  3. Gizzard
  4. Trigger



Redworms do not have teeth, they have a structure called the gizzard which helps them in grinding their food.

The correct option is (C) - Gizzard.



The color of dustbins in which biodegradable waste is collected is 

  1. Red
  2. Blue
  3. Orange
  4. Green



The correct option is (D) - Green.



Which of the following waste can be added in the process of making vermicompost?

  1. Cardboard
  2. Newspaper
  3. Laminated paper
  4. Cow dung



Vermicomposting is a method of converting plants and animal waste into compost .

The correct option is (D) - Cow dung.



Which of the following cannot be recycled?

  1. Mirror
  2. Tin can
  3. Wooden stool
  4. Book



Wooden stool can not be recycled as it can’t be changed into further new objects.

The correct option is (C) - Wooden stool.

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo