Environmental Engineering in CE Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. 105 35 95 75 105 35 95 75 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent. 1 4 12 8 1 4 12 8 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using None of these Mufflers (silencers) Accoustical absorbent Lagging of noisy duct None of these Mufflers (silencers) Accoustical absorbent Lagging of noisy duct ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the Both B and C Green house effect Global warming Catalytic conversion Both B and C Green house effect Global warming Catalytic conversion ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Smog is A combination of smoke and fog A liquid particle resulting from vapor condensation A solid particle e.g. flyash Nothing but black smoke A combination of smoke and fog A liquid particle resulting from vapor condensation A solid particle e.g. flyash Nothing but black smoke ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Black smoke coming out of the chimney of a furnace is an indication of the use of __________ in the furnace. Pulverised coal as fuel Low amount of excess combustion air Hydrocarbon fuel Large quantity of excess combustion air Pulverised coal as fuel Low amount of excess combustion air Hydrocarbon fuel Large quantity of excess combustion air ANSWER DOWNLOAD EXAMIANS APP
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