Fish die in water bodies polluted by sewage due to
Fish die in water bodies polluted by sewage due to Options (a) pathogens (b) Clogging of gills (c) Decreases in…
Fish die in water bodies polluted by sewage due to Options (a) pathogens (b) Clogging of gills (c) Decreases in…
Surface water contains Options (a) salt + organic matter (b) only salt (c) organic matter (d) suspended impurity Correct Answer:…
Addition of phosphate fertilizers into water leads to Options (a) increased growth of decomposers (b) reduced algal growth (c) increased…
Atmosphere of big/metropolitan cities is polluted most by Options (a) automobile exhausts (b) pesticide residue (c) household waste (d) radioactive…
The basic component of photochemical smog is Options (a) PBN (b) PAN (c) SO₂ (d) all of these Correct Answer:…
Biochemical oxygen Demand ,(BOD) is a measure of organic material present in water.BOD value less than 5 ppm indicates a…
Which of the following practices will not come under green chemistry Options (a) If possible,making use of soap made of…
Which of the following statements is incorrect Options (a) Textile workers suffer from white lung disease (b) Coal miners suffer…
Which of the following is the coldest region Options (a) Troposphere (b) Mesosphere (c) Stratosphere (d) Thermosphere Correct Answer: MesosphereExplanation:No…
Classical smong is found in Options (a) winter during morning time (b) winter during day time (c) summer during day…