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Question 14 Marks
Industries cause pollution when the factories that manufacture goods dump their wastes into the water, air, and soil.
Imagine that you are a factory owner. Write down a few ways in which you can reduce the pollution caused by your factory.
Answer
I would follow the following steps
  1. For the mitigation of smoke emissions from the chimney, a stack should be installed at the emitting point.
  2. Liquid coming out from the process of manufacturing should be treated in a treatment plant before its disposal as civic wastewater.
  3. Solid waste of the factory should be disposed off in a safe way by throwing it into the designated landfill site.
  4. For minimum emissions from a chimney or up to the allowable
    limits, a chimney is made according to scientific prescriptions so that whatever emits from it during or after the manufacturing process must be within its limited level.
  5. Moreover, the quality of machinery and equipment which is used for manufacturing should also be well-maintained and its regular maintenance and repair should be done to help them limit the emissions from production.
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Question 24 Marks
On an outline map of the world mark any five major industrial centres of the world.
Answer
Five major industrial centres of the world are :
  1. Sydney
  2. Chicago
  3. Berlin
  4. London
  5. St. Petersburg
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Question 34 Marks
Trace your journey: Imagine you are a cotton boll. Write about your journey from the field to somebody’s wardrobe write about all the stages you had to pass through to become a garment.
Answer
Here are the following stages we had to pass through to become a garment:
  1. washing of fibres
  2. carding and combing of fibres to form a rope-like mass of fibres known as ‘slivers’
  3. spinning to make cotton yam
  4. weaving of the ‘grey cloth’ or undyed cloth
  5. bleaching of the 'grey cloth’
  6. dyeing and printing
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Question 44 Marks
Give an account of the cotton textile industry in India.
Answer
The cotton textile industry is one of the primary industries in India. More than 40 per cent of the working population of India directly or indirectly depends on this industry.
The manufacturing of cotton textile involves the following
Processes:
  1. washing of fibres
  2. carding and combing of fibres to form a rope-like mass of fibres known as‘slivers’
  3. spinning to make cotton yarn
  4. weaving of the ‘ grey cloth’ or undyed cloth
  5. bleaching of the ‘grey cloth’
  6. dyeing and printing
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Question 54 Marks
What are the major causes of industrial pollution?
Answer
The major causes of industrial pollution are:
(a) Toxic chemicals used by industries in processing and manufacturing.
(b) Consumer products such as paints, sprays, plastics, cement, electronic parts, petroleum cleaning solvents, etc.
(c) Numerous industrial chemicals used in the manufacture of various products such as leather goods, paints, medicines, hospital wastes, etc.
(d) Greenhouse gas emissions such as CO.
(e) Activities such as mining, cutting down forests, construction of huge buildings, dams, highways etc.
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[4 Mark Question Answer] - Geography STD 7 Questions - Vidyadip