Water Pollution
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CHXI14:ENVIRONMENTAL CHEMISTRY

318609 A water sample has ppm level concentration of the following metals: \(\mathrm{Fe}=0.2, \mathrm{Mn}=5.0, \mathrm{Cu}=\) \(3.0, \mathrm{Zn}=5.0\). The metal that makes the water sample unsuitable for drinking is

1 \(\mathrm{Mn}\)
2 \(\mathrm{Zn}\)
3 \(\mathrm{Cu}\)
4 \(\mathrm{Fe}\)
JEE - 2019
CHXI14:ENVIRONMENTAL CHEMISTRY

318610 The reagent used to detect fluoride present in water is

1 Alum \(+\mathrm{CaO}+\mathrm{CaOCl}_{2}\)
2 Defluoron - I & II
3 Zirconium - alizarin - S . dye
4 Calcium aluminium fluoride
CHXI14:ENVIRONMENTAL CHEMISTRY

318611 Water becomes useless for drinking purpose if the flouride concentration exceeds

1 \(10\,\,{\text{ppm}}\)
2 \(5\,\,{\text{ppm}}\)
3 \(3\,\,{\text{ppm}}\)
4 \(20\,\,{\text{ppm}}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318612 The concentration of sodium fluoride amongst the following that may cause fluorosis, is

1 \({\text{1}}\,\,{\text{ppm}}\)
2 \({\text{2 ppm}}\)
3 \({\text{10 ppm}}\)
4 less than \({\text{1 ppm}}\)
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CHXI14:ENVIRONMENTAL CHEMISTRY

318609 A water sample has ppm level concentration of the following metals: \(\mathrm{Fe}=0.2, \mathrm{Mn}=5.0, \mathrm{Cu}=\) \(3.0, \mathrm{Zn}=5.0\). The metal that makes the water sample unsuitable for drinking is

1 \(\mathrm{Mn}\)
2 \(\mathrm{Zn}\)
3 \(\mathrm{Cu}\)
4 \(\mathrm{Fe}\)
JEE - 2019
CHXI14:ENVIRONMENTAL CHEMISTRY

318610 The reagent used to detect fluoride present in water is

1 Alum \(+\mathrm{CaO}+\mathrm{CaOCl}_{2}\)
2 Defluoron - I & II
3 Zirconium - alizarin - S . dye
4 Calcium aluminium fluoride
CHXI14:ENVIRONMENTAL CHEMISTRY

318611 Water becomes useless for drinking purpose if the flouride concentration exceeds

1 \(10\,\,{\text{ppm}}\)
2 \(5\,\,{\text{ppm}}\)
3 \(3\,\,{\text{ppm}}\)
4 \(20\,\,{\text{ppm}}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318612 The concentration of sodium fluoride amongst the following that may cause fluorosis, is

1 \({\text{1}}\,\,{\text{ppm}}\)
2 \({\text{2 ppm}}\)
3 \({\text{10 ppm}}\)
4 less than \({\text{1 ppm}}\)
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CHXI14:ENVIRONMENTAL CHEMISTRY

318609 A water sample has ppm level concentration of the following metals: \(\mathrm{Fe}=0.2, \mathrm{Mn}=5.0, \mathrm{Cu}=\) \(3.0, \mathrm{Zn}=5.0\). The metal that makes the water sample unsuitable for drinking is

1 \(\mathrm{Mn}\)
2 \(\mathrm{Zn}\)
3 \(\mathrm{Cu}\)
4 \(\mathrm{Fe}\)
JEE - 2019
CHXI14:ENVIRONMENTAL CHEMISTRY

318610 The reagent used to detect fluoride present in water is

1 Alum \(+\mathrm{CaO}+\mathrm{CaOCl}_{2}\)
2 Defluoron - I & II
3 Zirconium - alizarin - S . dye
4 Calcium aluminium fluoride
CHXI14:ENVIRONMENTAL CHEMISTRY

318611 Water becomes useless for drinking purpose if the flouride concentration exceeds

1 \(10\,\,{\text{ppm}}\)
2 \(5\,\,{\text{ppm}}\)
3 \(3\,\,{\text{ppm}}\)
4 \(20\,\,{\text{ppm}}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318612 The concentration of sodium fluoride amongst the following that may cause fluorosis, is

1 \({\text{1}}\,\,{\text{ppm}}\)
2 \({\text{2 ppm}}\)
3 \({\text{10 ppm}}\)
4 less than \({\text{1 ppm}}\)
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CHXI14:ENVIRONMENTAL CHEMISTRY

318609 A water sample has ppm level concentration of the following metals: \(\mathrm{Fe}=0.2, \mathrm{Mn}=5.0, \mathrm{Cu}=\) \(3.0, \mathrm{Zn}=5.0\). The metal that makes the water sample unsuitable for drinking is

1 \(\mathrm{Mn}\)
2 \(\mathrm{Zn}\)
3 \(\mathrm{Cu}\)
4 \(\mathrm{Fe}\)
JEE - 2019
CHXI14:ENVIRONMENTAL CHEMISTRY

318610 The reagent used to detect fluoride present in water is

1 Alum \(+\mathrm{CaO}+\mathrm{CaOCl}_{2}\)
2 Defluoron - I & II
3 Zirconium - alizarin - S . dye
4 Calcium aluminium fluoride
CHXI14:ENVIRONMENTAL CHEMISTRY

318611 Water becomes useless for drinking purpose if the flouride concentration exceeds

1 \(10\,\,{\text{ppm}}\)
2 \(5\,\,{\text{ppm}}\)
3 \(3\,\,{\text{ppm}}\)
4 \(20\,\,{\text{ppm}}\)
CHXI14:ENVIRONMENTAL CHEMISTRY

318612 The concentration of sodium fluoride amongst the following that may cause fluorosis, is

1 \({\text{1}}\,\,{\text{ppm}}\)
2 \({\text{2 ppm}}\)
3 \({\text{10 ppm}}\)
4 less than \({\text{1 ppm}}\)
For More Updates join with Us