1. (a) Optimum utilisation of equipment adopting latest techniques and upgrading existing equipment. (b) Minimising waste generation by maximising ash utilisation. (c) Providing green belts for nurturing ecological balance and addressing the question of special purpose vehicles for afforestation. (d) RRead more

    (a) Optimum utilisation of equipment adopting latest techniques and upgrading existing equipment.
    (b) Minimising waste generation by maximising ash utilisation.
    (c) Providing green belts for nurturing ecological balance and addressing the question of special purpose vehicles for afforestation.
    (d) Reducing environmental pollution through ash pond management, ash water recycling system and liquid waste management.
    (e) Ecological monitoring, reviews and on- line database management for all its power stations.

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  2. (a) Primary treatment by mechanical means. This involves screening, grinding, flocculation and sedimentation. (b) Secondary treatment by biological process (c) Tertiary treatment by biological, chemical and physical processes. This involves recycling of wastewater.

    (a) Primary treatment by mechanical means. This involves screening, grinding, flocculation and sedimentation.
    (b) Secondary treatment by biological process

    (c) Tertiary treatment by biological, chemical and physical processes. This involves recycling of wastewater.

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  3. Air pollution is caused by the presence of high proportion of undesirable gases, such as sulphur dioxide and carbon monoxide. Air- borne particulate materials contain both solid and liquid particles like dust, sprays mist and smoke. Smoke is emitted by chemical and paper factories, brick kilns, refiRead more

    Air pollution is caused by the presence of high proportion of undesirable gases, such as sulphur dioxide and carbon monoxide. Air- borne particulate materials contain both solid and liquid particles like dust, sprays mist and smoke. Smoke is emitted by chemical and paper factories, brick kilns, refineries and smelting plants, and burning of fossil fuels in big and small factories that ignore pollution norms. Toxic gas leaks can be very hazardous with long-term effects.

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  4. (a) BHEL: Bharat Heavy Electronic Limited. (b) SAIL: Steel authority of India Limited. (c) EMS: Environment Management System. (d) NMCC: The National Military Command Center.

    (a) BHEL: Bharat Heavy Electronic Limited.
    (b) SAIL: Steel authority of India Limited.
    (c) EMS: Environment Management System.
    (d) NMCC: The National Military Command Center.

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  5. In ancient India, cotton textiles were produced with hand spinning and handloom weaving techniques. After the 18th century, power-looms came into use. Our traditional industries suffered a setback during the colonial period because they could not compete with the mill-made cloth from England. In theRead more

    In ancient India, cotton textiles were produced with hand spinning and handloom weaving techniques. After the 18th century, power-looms came into use. Our traditional industries suffered a setback during the colonial period because they could not compete with the mill-made cloth from England. In the early years, the cotton textile industry was concentrated in the cotton growing belt of Maharashtra and Gujarat. Availability of raw cotton, market, transport including accessible port facilities, labour, moist climate, etc. contributed towards its localisation. This industry has close links with agriculture and provides a living to farmers, cotton boll pluckers and workers engaged in ginning, spinning, weaving, dyeing, designing, packaging, tailoring and sewing.

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