Environmental Engineering in CE The commonest form of iron & manganese found in ground water as pollutant is in the form of their Carbonates Sulphides Chlorides Bi-carbonates Carbonates Sulphides Chlorides Bi-carbonates ANSWER DOWNLOAD EXAMIANS APP
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 Only (i) All are correct (i) and (ii) (i) and (iii) Only (i) All are correct (i) and (ii) (i) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan Both A & B With greater number of blades Neither A nor B Of increased diameter Both A & B With greater number of blades Neither A nor B Of increased diameter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO₂ in air is __________ ppm. 2000 5 1000 500 2000 5 1000 500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of dissolved impurities of __________ is responsible for the red brownish color of water. Bi-carbonates Iron & manganese Arsenic Carbonates Bi-carbonates Iron & manganese Arsenic Carbonates ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. 105 95 75 35 105 95 75 35 ANSWER DOWNLOAD EXAMIANS APP
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