Extra 40 MCQs with answers from Chapter:16 Garbage In, Garbage Out of Class 6 Science (CBSE):-
What is garbage?
a) Useful materials
b) Waste materials
c) Fresh food
d) Clean water
Answer:
b) Waste materials
Which of the following is a biodegradable waste?
a) Plastic bag
b) Glass bottle
c) Fruit peel
d) Metal can
Answer:
c) Fruit peel
Which of the following is a non-biodegradable waste?
a) Banana peel
b) Plastic bottle
c) Paper
d) Vegetable scraps
Answer:
b) Plastic bottle
What do we call the process of converting waste materials into new products?
a) Landfilling
b) Composting
c) Recycling
d) Incineration
Answer:
c) Recycling
Which waste can be used to make compost?
a) Plastic bags
b) Vegetable peels
c) Glass pieces
d) Metal scraps
Answer:
b) Vegetable peels
What is vermicomposting?
a) Burning of waste
b) Composting using earthworms
c) Dumping waste in landfills
d) Recycling plastic
Answer:
b) Composting using earthworms
What type of bins should be used for biodegradable waste?
a) Blue bin
b) Green bin
c) Red bin
d) Yellow bin
Answer:
b) Green bin
Which type of waste should be thrown in a blue bin?
a) Biodegradable waste
b) Plastic and metal waste
c) Kitchen waste
d) Fruit peels
Answer:
b) Plastic and metal waste
Which of the following is a good practice to reduce waste?
a) Using plastic bags
b) Burning garbage
c) Reusing old materials
d) Throwing garbage on roads
Answer:
c) Reusing old materials
Which method is the best for disposing of kitchen waste?
a) Landfilling
b) Composting
c) Burning
d) Throwing in water bodies
Answer:
b) Composting
Which gas is released from decomposing garbage?
a) Oxygen
b) Carbon dioxide
c) Methane
d) Nitrogen
Answer:
c) Methane
Why is plastic harmful to the environment?
a) It is biodegradable
b) It can be recycled easily
c) It does not decompose for many years
d) It helps in plant growth
Answer:
c) It does not decompose for many years
What is landfill?
a) A recycling
centre
b) A place where waste is burned
c) A low-lying area where garbage is dumped
d) A composting pit
Answer:
c) A low-lying area where garbage is dumped
Which of the following waste materials takes the longest time to decompose?
a) Paper
b) Banana peel
c) Glass bottle
d) Cotton cloth
Answer:
c) Glass bottle
What should be done to reduce plastic waste?
a) Use plastic bags
b) Reuse and recycle plastic items
c) Throw plastic in rivers
d) Burn plastic waste
Answer:
b) Reuse and recycle plastic items
Which of the following is an example of reuse?
a) Throwing away old clothes
b) Using a glass bottle as a flower vase
c) Burning newspapers
d) Using plastic bags once
Answer:
b) Using a glass bottle as a flower vase
What should be done with dry leaves?
a) Burn them
b) Compost them
c) Throw them in a landfill
d) Mix them with plastic waste
Answer:
b) Compost them
Which organism helps in composting waste?
a) Earthworms
b) Snakes
c) Cockroaches
d) Mosquitoes
Answer:
a) Earthworms
Which of these wastes is best suited for making compost?
a) Metal cans
b) Plastic bottles
c) Vegetable peels
d) Glass pieces
Answer:
c) Vegetable peels
What is the best way to dispose of old newspapers?
a) Burn them
b) Throw them in the dustbin
c) Recycle them
d) Bury them in soil
Answer:
c) Recycle them
Which type of pollution is caused by burning waste?
a) Air pollution
b) Water pollution
c) Noise pollution
d) Land pollution
Answer:
a) Air pollution
Why should we not burn plastic waste?
a) It produces oxygen
b) It releases toxic gases
c) It smells good
d) It increases soil fertility
Answer:
b) It releases toxic gases
What does "3Rs" stand for?
a) Read, Repeat, Reduce
b) Reduce, Reuse, Recycle
c) Restore, Recycle, Reform
d) Reuse, Recreate, Reject
Answer:
b) Reduce, Reuse, Recycle
Which of these is the best alternative to plastic bags?
a) Paper bags
b) Polythene bags
c)
Thermocol
bags
d) None of the above
Answer:
a) Paper bags
What happens if garbage is not disposed of properly?
a) It causes diseases
b) It improves air quality
c) It increases oxygen levels
d) It reduces pollution
Answer:
a) It causes diseases
Why should we separate dry and wet waste?
a) To increase pollution
b) To make disposal easier
c) To mix both types of waste
d) To increase garbage
Answer:
b) To make disposal easier
Which of these is an eco-friendly practice?
a) Using plastic cutlery
b) Throwing garbage on roads
c) Using cloth bags
d) Burning waste
Answer:
c) Using cloth bags
What is biodegradable waste?
a) Waste that decomposes naturally
b) Waste that never decomposes
c) Waste made of plastic
d) None of the above
Answer:
a) Waste that decomposes naturally
Which method of waste management is best for the environment?
a) Landfilling
b) Burning waste
c) Composting and recycling
d) Dumping in rivers
Answer:
c) Composting and recycling
What should be done with broken glass pieces?
a) Throw them in the green bin
b) Recycle them
c) Burn them
d) Mix with kitchen waste
Answer:
b) Recycle them
Which type of waste takes the longest time to decompose?
a) Fruit peels
b) Cotton clothes
c) Plastic bottles
d) Paper waste
Answer:
c) Plastic bottles
Why is composting important?
a) It increases plastic waste
b) It helps in reducing biodegradable waste
c) It releases harmful gases
d) It makes waste non-biodegradable
Answer:
b) It helps in reducing biodegradable waste
What is the main advantage of vermicomposting?
a) Produces harmful gases
b) Reduces soil fertility
c) Provides nutrient-rich manure
d) Increases plastic waste
Answer:
c) Provides nutrient-rich manure
Which of the following should not be added to compost?
a) Vegetable peels
b) Dry leaves
c) Plastic bags
d) Fruit peels
Answer:
c) Plastic bags
What is the main disadvantage of landfills?
a) They produce fresh air
b) They improve soil fertility
c) They release toxic gases and leach chemicals into the soil
d) They reduce pollution
Answer:
c) They release toxic gases and leach chemicals into the soil
Which of these materials can be recycled?
a) Glass
b) Plastic
c) Metal
d) All of the above
Answer:
d) All of the above
Why should we avoid using
thermocol
for decoration?
a) It is eco-friendly
b) It is biodegradable
c) It does not decompose easily and harms the environment
d) It improves air quality
Answer:
c) It does not decompose easily and harms the environment
What is the best way to manage e-waste (electronic waste)?
a) Throwing in dustbins
b) Burning in open fields
c) Recycling and reusing electronic items
d) Dumping in landfills
Answer:
c) Recycling and reusing electronic items
Which is a better alternative to using plastic straws?
a) Metal straws
b) Paper straws
c) Bamboo straws
d) All of the above
Answer:
d) All of the above
What is the main objective of waste management?
a) To pollute the environment
b) To reduce, reuse, and recycle waste efficiently
c) To increase landfill sites
d) To burn all waste
Answer:
b) To reduce, reuse, and recycle waste efficiently
