Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal

Environmental Engineering in CE
Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal

In clarifiers

By chemical coagulation

In sedimentation tanks equipped with mechanical scrapper

In vacuum filter

In clarifiers

By chemical coagulation

In sedimentation tanks equipped with mechanical scrapper

In vacuum filter

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Environmental Engineering in CE
TLV of NO₂ & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO₂ causes

Skin disorder

Cancer

Bone disease

Bronchitis

Skin disorder

Cancer

Bone disease

Bronchitis

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Environmental Engineering in CE
Hardy cross method of analysis of distribution system(i) Involves successive trials(ii) Takes economic aspects into account(iii) Is time consuming

All are correct

Only (i)

(i) and (iii)

(i) and (ii)

All are correct

Only (i)

(i) and (iii)

(i) and (ii)

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Environmental Engineering in CE
Algae growth in water is controlled by

Aeration

Chlorination

Bleaching

Deoxidation

Aeration

Chlorination

Bleaching

Deoxidation

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Environmental Engineering in CE
Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools).

25-30

43961

15-20

43832

25-30

43961

15-20

43832

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Environmental Engineering in CE
Biological oxidation ponds remove organic matters present in the polluted water by

Using the activities of bacteria and other micro organisms

Aerobic oxidation

Neither A nor B

Both A & B

Using the activities of bacteria and other micro organisms

Aerobic oxidation

Neither A nor B

Both A & B

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Environmental Engineering in CE

Environmental Engineering in CE Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal

Environmental Engineering in CE TLV of NO₂ & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO₂ causes

Environmental Engineering in CE Hardy cross method of analysis of distribution system(i) Involves successive trials(ii) Takes economic aspects into account(iii) Is time consuming

Environmental Engineering in CE Algae growth in water is controlled by

Environmental Engineering in CE Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools).

Environmental Engineering in CE Biological oxidation ponds remove organic matters present in the polluted water by

Environmental Engineering in CE
Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal

Environmental Engineering in CE
TLV of NO₂ & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO₂ causes

Environmental Engineering in CE
Hardy cross method of analysis of distribution system(i) Involves successive trials(ii) Takes economic aspects into account(iii) Is time consuming

Environmental Engineering in CE
Algae growth in water is controlled by

Environmental Engineering in CE
Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools).

Environmental Engineering in CE
Biological oxidation ponds remove organic matters present in the polluted water by