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प्रश्न
Given below is a representation of a kind of pollution. Study the same and answer the questions that follow

(i) Name the kind of pollution.
(ii) List any three common sources of this pollution.
(iii) Mention three harmful effects of this pollution on human health.
(iv) Explain the term ‘Pollutant’.
(v) Name two soil pollutants
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उत्तर
(i) Noise pollution
(ii) Sources of noise pollution:
- Use of loudspeakers and musical bands in public places
- Sounds generated by industrial machines
- Landing and taking off of aeroplanes, jets and other aircraft
(iii) Harmful effects of noise pollution on human health:
- Loud sounds cause damage to the ear drum which can lead to deafness
- Lowered work efficiency
- Nervous irritability
(iv) Any substance which causes pollution is called a pollutant.
(v) Plastic and radioactive substances are soil pollutants.
APPEARS IN
संबंधित प्रश्न
Briefly explain the following terms: Power of accommodation
Differentiate between members of the following pair with reference to what is asked in bracket.
Semi-circular canal and cochlea (Senses perceived)
State whether the following statements are true (T) or false (F). If false, correct them by changing any one single word in each.
Semi-circular canals are concerned with static (positional) balance.
Draw a labelled diagram of the inner ear.
What is the name of passage in outer ear which carries sound waves to the ear-drum ?
The range of audible frequency for the human ear is
Mention the name of passage is the outer ear which carries sound waves to the eardrum.
Select the option with incorrect identification:

Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Ear pinna : Auricle :: Inner ear : ______.
Where are the following located?
Eustachian canal
