Water Pollution
Trending Questions
Q.
Burning of leaves is harmful. Why? Is burning of leaves considered illegal in India? If no, do you suggest it should be made illegal?
Q. 1.5 g sample of KCIO on heating decomposed intwo ways2 KCIO32 KCI 30, 4 KCIO3> 3 KСIO, + KCІIf the amount of KCIO, present in the residue is0.395 g, then the volume of O, collected at STP is
Q. The one that is NOT suitable for the removal of permanent hardness of water is:
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- Calgon's method
- Treatment with sodium carbonate
- Ion-exchange method
- Clark's method
Q. (4) 23.7 63. 0.5 g of an organic compound cantaining N on Kjeldahlising required 29 ml of N/5 H2So4 for complete neutralization of NH3 The percentage of N in the compound is (1) 34.3 (3) 21.6 (2) 16.2 (4) 14.8 cd odaof rnic Compound gave 9.188q of AQBr
Q. Which one of these are non-point sources of pollution?
- When rain or snow moves through the ground and picks up pollutants as it moves towards a major body of water
- Factories
- Oil wells
- Power plants
Q. 20.2 litres of a mixture of nitrous and nitric oxide at STP have a mean molecular weight of 39.8 Watt volume of Nitrogen measured at STP could be obtained when the mixture has been passed over Red Hot copper
Q. Aluminium sulphate finds application is sewage treatment . How many moles of Al
are in a sample of this compound if the sample contains 0.008 moles of S ??
Q. 4. the concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm, and 0.2 ppm, respectively. the water is unsuitable for drinking due to high concentration of 1/ lead 2. nitrate 3. iron 4. fluoride
Q. Addition of phosphate fertilizers into water leads to
Increased growth of decomposers
Reduced algae growth
Increased algae growth
Nutrient enrichment(eutrophication)
Q. Which one of the following process is usually used to destroy large quantities of toxic wastes ?
- Burning in an open bins
- All of the above.
- Sublimation
- Controlled incineration
Q.
What happens when HCl gas is passed through saturated NaCl solution
Q. Q 53/180 If the Ksp of Ba(OH)2 is 1 x 10-6 then howmuch NaOH must be added to 1000 ml of 102 Msolution of BaCl2 to start the precipitation of Ba(OH)2?
Q. What is the term used to describe a substance that pollutes the air, water or land?
- A pollutant
- Litter
- A landfill
- Waste water