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Environmental Engineering in CE

Environmental Engineering in CE
Inhalation of silica dust by human being causes

Tuberculosis
Shortness of breath
Asphyxiation
Both B & C

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Environmental Engineering in CE
The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant?

Alkalis
Alkyl benzene sulphonate (ABS)
Chlorine
Benzene hexachloride

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Environmental Engineering in CE
Green house effect is accentuated by

Rapid industrialisation
All of these
Deforestation
Increased transportation activity

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Environmental Engineering in CE
Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called

Powder
Dust
Smoke
Grit

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Environmental Engineering in CE
Nitrogen oxides (NOx) is not produced in the __________ industry.

Nitrogenous fertiliser
Detergent
Any of these
Nitric acid making

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Environmental Engineering in CE
Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it.

Ortho-xylene
Potassium cyanide
None of these
Coal ash

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