Maximum permissible residual chlorine in treated water should be __________ mg/liter.
Maximum permissible residual chlorine in treated water should be __________ mg/liter. Read More »
Q. Green House gases blanket/block the infrared radiation from earth’s surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect?
Which of the following gases does not exhibit green house effect? Read More »
Photochemical smog is formed from automobile exhaust
Photochemical smog is formed from automobile exhaust Read More »
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundries causes
Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of
The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the
Q. Ringelmann chart is used for the evaluation of __________ pollution. Air Water Noise Radioactive Answer: Air
Ringelmann chart is used for the evaluation of __________ pollution. Read More »
Which of the following is an adsorbent for removal of nitrogen oxides from gas/air?
Which of the following is an adsorbent for removal of nitrogen oxides from gas/air? Read More »
Which of the following is not a source of ozone emission in the atmosphere?
Which of the following is not a source of ozone emission in the atmosphere? Read More »
