Pick out the wrong statement pertaining to 'green house' for the plants. TRUE ANSWER : ? YOUR ANSWER : ?
Smog is not formed due to the presence of __________ in the atmosphere. Any of these CO₂ NOx SO₂ TRUE ANSWER : ? YOUR ANSWER : ?
The concentration of water vapour in troposphere, which depends upon the altitude & temperature varies in the range of zero to __________ percent. 12 4 1 8 TRUE ANSWER : ? YOUR ANSWER : ?
Presence of non-biodegradable substances, like alkyl benzene sulphonate (ABS) from the detergents in polluted water stream causes Depletion of dissolved oxygen Explosion hazards Persistent foam Fire hazards TRUE ANSWER : ? YOUR ANSWER : ?
World environment day is observed every year on the 5th of July December June September TRUE ANSWER : ? YOUR ANSWER : ?
COD of raw municipal sewage may be in the range of about __________ mg/litre. 1-2 90-120 1500-2500 5-10 TRUE ANSWER : ? YOUR ANSWER : ?
The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 230 20 750 1500 TRUE ANSWER : ? YOUR ANSWER : ?
Oil and grease present in an emulsified state in waste water discharged from industries can be removed by Biological oxidation Settling out using chemical reagents Skimming off Chlorination TRUE ANSWER : ? YOUR ANSWER : ?
Fluorosis is caused due to the presence of excessive amount of __________ in drinking water. Lead Arsenic Mercury Fluoride TRUE ANSWER : ? YOUR ANSWER : ?
Ethanolamine is an absorbant used for the removal of __________ from air/gas. H₂S HF SO₂ Both B & C TRUE ANSWER : ? YOUR ANSWER : ?