Environmental Engineering in CE The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water Both (i) and (ii) Only (iii) Only (i) Both (i) and (iii) Both (i) and (ii) Only (iii) Only (i) Both (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The earth's atmosphere is an envelope of gases present upto a height of about __________ kms. 10 200 2000 1000 10 200 2000 1000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The pH value of oxidised sewage is about 6.2 13.4 1.8 7.3 6.2 13.4 1.8 7.3 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Deaeration of high pressure boiler feed water is done to reduce Its silica content Foaming from boilers Its dissolved oxygen content Caustic embrittlement Its silica content Foaming from boilers Its dissolved oxygen content Caustic embrittlement ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Hydrogen ion concentration in distilled water is 10⁻⁷ 7 x 10⁷ 7 x 10⁻⁷ 10⁷ 10⁻⁷ 7 x 10⁷ 7 x 10⁻⁷ 10⁷ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Iron & manganese present as pollutant in water can not be removed by Ion exchange process Chlorination Lime soda process or manganese zeolite process Oxidation followed by settling & filtration Ion exchange process Chlorination Lime soda process or manganese zeolite process Oxidation followed by settling & filtration ANSWER DOWNLOAD EXAMIANS APP
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