Q1

The structure of redworms which helps them in grinding food is

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

 

Answer:  

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.

 

Q2

The color of dustbins in which biodegradable waste is collected is 

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

 

Answer: 

The correct option is (D) - Green.

 

Q3

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

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

 

Answer:

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

The correct option is (D) - Cow dung.

 

Q4

Which of the following cannot be recycled?

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

 

Answer:

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 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo