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9th Class English Answers of Chapter-11 Questions

Unit No 11 “Noise in the Environment” 9th Class English Answers of Chapter-11 Questions

From Book Exercise:

Q .1 How do you define noise pollution?
ANS Noise pollution is a form of noise that disrupts the normal functioning of life.

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Q.2 How is transport a source of noise pollution?
ANS Noise coming from the vehicles, airplanes and trains is a big cause of noise pollution.

Q.3 How is construction work a cause of noise pollution?
ANS The transport and equipment used at construction sites is a big source of noise pollution.

Q.4 How is use of technology causing noise pollution?
ANS Careless use of technology such as mobile phones, electricity generators, music system and TV is a big cause noise pollution.

Q.5 Why is noise dangerous for human health?
ANS Noise pollution can cause problems like aggression, hearing loss, restlessness, depression and insomnia etc.

Q.6 What kind of precautions may reduce noise coming from electronic devices?
ANS The people need to develop some civic sense while using electronic devices.

Unit-12 Questions Answers

From Lesson:

Q.1 What is normal functioning and how is it disrupted?
Ans. Normal functioning is daily routine of life which disrupted by the noise pollution.

Q.2 How does technology increase noise pollution? What are technology based irritants?
Ans. Careless use of technology equipment causes noise pollution. Mobile phones, generators, TV and music systems are some technology
based irritants.

Q.3 What are the harmful effects of noise pollution on human health?
Ans. Noise pollution can cause problems like aggression, hearing loss, restlessness, depression and insomnia etc.

Q.4 How can we cope with the serious issue of noise pollution?

Ans. We can cope with this by developing awareness and civic sense in citizens.

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