Page 1 - CBW

SAI International School

Competency Based Worksheet
Subject – Chemistry

Chapter – Waste and its Management

Class- VI

Q. No. Questions

1. What is the primary goal of waste management?
a) To increase waste production
b) To minimize waste impact on the environment
c) To maximize waste generation
d) To store waste indefinitely
2. Which of the following is the most effective method for reducing waste generation?
a) Recycling
b) Composting
c) Waste reduction at the source
d) Incineration
3. Which type of waste includes used batteries and electronic devices?
a) Hazardous waste
b) Organic waste
c) General waste
d) Inert waste
4. Which of the following is a non-biodegradable waste?
a) Vegetable peels
b) Paper
c) Plastic
d) Wood
5. What is the primary characteristic of biodegradable waste?
a) It decomposes quickly in nature.
b) It can be broken down by microorganisms.
c) It remains in the environment for a long time.
d) It is always toxic.
Choose the correct option for the following: (For questions- 6 and 7)
a) If both Assertion and Reason are correct and Reason is the correct explanation of
Assertion.
b) If both Assertion and Reason are correct, but Reason is not the correct explanation of
Assertion.
c) If Assertion is correct but Reason is incorrect.
d) If assertion is incorrect but Reason is correct.
e) If Assertion and Reason both are incorrect.
6. Assertion (A): Biodegradable substances result in the formation of compost
Reason (R): Biodegradable substances undergo decomposition by microorganisms.
7. Assertion (A): Composting is an effective method for managing biodegradable waste.
Reason (R): Composting accelerates the decomposition of organic waste into nutrient-rich
compost.