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Question (11)

QN0034172

Ravi noticed stagnant wastewater near his school after rain. A few days later, many mosquitoes were seen in that area. What is the most likely reason?

(A) Mosquitoes grow better in clean drinking water only.
(B) Stagnant wastewater provides a place for mosquitoes to breed.
(C) Wastewater removes mosquitoes.
(D) Mosquitoes are attracted only to flowers.

Correct Answer: B

Explanation:

Mosquitoes breed in stagnant wastewater, increasing the spread of diseases.

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Question (12)

QN0034173

A student collected the following items: 6 rotten tomatoes, 8 dry leaves, 5 glass bottles and 7 plastic packets. How many items should be placed in the green dustbin?

(A) 8
(B) 13
(C) 14
(D) 26

Correct Answer: C

Explanation:

Rotten tomatoes and dry leaves are biodegradable. 6 + 8 = 14.

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Question (13)

QN0034174

Which activity shows the idea of "Want not, Waste not"?

(A) Buying new toys every week
(B) Throwing away usable notebooks
(C) Buying only the things that are really needed
(D) Using disposable plastic plates every day

Correct Answer: C

Explanation:

Buying only what is needed helps reduce waste and conserve resources.

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Question (14)

QN0034175

Four students suggested ways to wrap a gift. P. Wrap it in old newspapers. Q. Use a shiny plastic wrapper and throw it away. R. Wrap it with an old clean cloth. S. Use reusable decorative ribbons. Which combination is the most eco-friendly?

(A) P, R and S
(B) P and Q
(C) Q and S
(D) Only Q

Correct Answer: A

Explanation:

Reusing newspapers, cloth and ribbons creates less waste than disposable plastic wrappers.

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Question (15)

QN0034176

A clean village has 24 compost bins and 16 recycling bins. How many more compost bins are there than recycling bins?

(A) 6
(B) 8
(C) 10
(D) 12

Correct Answer: B

Explanation:

24 − 16 = 8 more compost bins.

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Question (16)

QN0034177

Which of the following will not help in keeping the surroundings clean?

(A) Separating waste before throwing it away
(B) Reusing bottles and containers
(C) Throwing garbage on empty plots
(D) Using cloth bags while shopping

Correct Answer: C

Explanation:

Throwing garbage in open places dirties the surroundings and spreads diseases.

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Question (17)

QN0034178

A school organised a cleanliness drive. Out of 80 students, 35 collected dry leaves and 25 collected plastic bottles. The remaining students planted trees. How many students planted trees?

(A) 15
(B) 20
(C) 25
(D) 30

Correct Answer: B

Explanation:

Students collecting waste = 35 + 25 = 60. Remaining = 80 − 60 = 20.

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Question (18)

QN0034179

Which place is known in the chapter as a zero-waste village?

(A) Jaipur
(B) Silluk
(C) Delhi
(D) Chennai

Correct Answer: B

Explanation:

Silluk in Arunachal Pradesh is mentioned as a zero-waste village.

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Question (19)

QN0034180

A family produced the following waste in one week: Vegetable peels – 18 kg, Plastic bottles – 6 kg, Paper – 9 kg and Egg shells – 2 kg. How much biodegradable waste was produced?

(A) 20 kg
(B) 24 kg
(C) 26 kg
(D) 35 kg

Correct Answer: A

Explanation:

Vegetable peels and egg shells are biodegradable. 18 + 2 = 20 kg.

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Question (20)

QN0034181

Which sequence shows the correct order of good waste-management practices?

(A) Burn waste → Mix all waste → Throw it away
(B) Reduce waste → Reuse useful items → Separate waste for composting and recycling
(C) Buy more products → Throw old items → Burn plastic
(D) Throw waste anywhere → Clean it later → Buy new things

Correct Answer: B

Explanation:

Good waste management starts with reducing waste, then reusing items, and finally separating waste for composting and recycling.

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Question (11)

Ravi noticed stagnant wastewater near his school after rain. A few days later, many mosquitoes were seen in that area. What is the most likely reason?

Explanation:

Link:

Question (12)

A student collected the following items: 6 rotten tomatoes, 8 dry leaves, 5 glass bottles and 7 plastic packets. How many items should be placed in the green dustbin?

Explanation:

Link:

Question (13)

Which activity shows the idea of "Want not, Waste not"?

Explanation:

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Question (14)

Four students suggested ways to wrap a gift. P. Wrap it in old newspapers. Q. Use a shiny plastic wrapper and throw it away. R. Wrap it with an old clean cloth. S. Use reusable decorative ribbons. Which combination is the most eco-friendly?

Explanation:

Link:

Question (15)

A clean village has 24 compost bins and 16 recycling bins. How many more compost bins are there than recycling bins?

Explanation:

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Question (16)

Which of the following will not help in keeping the surroundings clean?

Explanation:

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Question (17)

A school organised a cleanliness drive. Out of 80 students, 35 collected dry leaves and 25 collected plastic bottles. The remaining students planted trees. How many students planted trees?

Explanation:

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Question (18)

Which place is known in the chapter as a zero-waste village?

Explanation:

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Question (19)

A family produced the following waste in one week: Vegetable peels – 18 kg, Plastic bottles – 6 kg, Paper – 9 kg and Egg shells – 2 kg. How much biodegradable waste was produced?

Explanation:

Link:

Question (20)

Which sequence shows the correct order of good waste-management practices?

Explanation:

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