Hardness of Water
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CHXI09:HYDROGEN

315529 \(\mathrm{1000 \mathrm{~g}}\) aqueous solution of \(\mathrm{\mathrm{CaCO}_{3}}\) contains 10 \(\mathrm{\mathrm{g}}\) of calcium carbonate. Hardness of solution is

1 \({\rm{10}}\) \({\rm{ppm}}\)
2 \({\rm{100}}\) \({\rm{ppm}}\)
3 \({\rm{1000}}\) \({\rm{ppm}}\)
4 \({\rm{10000}}\) \({\rm{ppm}}\)
CHXI09:HYDROGEN

315530 \(\mathrm{100 \mathrm{~mL}}\) of tap water containing \(\mathrm{\mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}}\) was titrated with \({\rm{N/50}}\) \({\rm{HCl}}\) with methyl orange as indicator. If \(\mathrm{30 \mathrm{~mL}}\) of \(\mathrm{\mathrm{HCl}}\) were required, the temporary hardness as parts of \(\mathrm{\mathrm{CaCO}_{3}}\) per \(\mathrm{10^{6}}\) parts of water is

1 \({\rm{150}}\) \({\rm{ppm}}\)
2 \({\rm{300}}\) \({\rm{ppm}}\)
3 \({\rm{450}}\) \({\rm{ppm}}\)
4 \({\rm{600}}\) \({\rm{ppm}}\)
CHXI09:HYDROGEN

315531 Hardness of water is estimated by

1 EDTA method
2 Titrimetric method
3 conductivity method
4 distillation method
CHXI09:HYDROGEN

315532 The degree of hardness of water is usually expressed in terms of

1 ppm by weight of \(\mathrm{MgSO}_{4}\)
2 \(\mathrm{g} / \mathrm{L}\) of \(\mathrm{CaCO}_{3}\) and \(\mathrm{MgCO}_{3}\) present
3 ppm by weight of \(\mathrm{CaCO}_{3}\) irrespective of whether it is actually present
4 ppm of \(\mathrm{CaCO}_{3}\) actually present in water
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CHXI09:HYDROGEN

315529 \(\mathrm{1000 \mathrm{~g}}\) aqueous solution of \(\mathrm{\mathrm{CaCO}_{3}}\) contains 10 \(\mathrm{\mathrm{g}}\) of calcium carbonate. Hardness of solution is

1 \({\rm{10}}\) \({\rm{ppm}}\)
2 \({\rm{100}}\) \({\rm{ppm}}\)
3 \({\rm{1000}}\) \({\rm{ppm}}\)
4 \({\rm{10000}}\) \({\rm{ppm}}\)
CHXI09:HYDROGEN

315530 \(\mathrm{100 \mathrm{~mL}}\) of tap water containing \(\mathrm{\mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}}\) was titrated with \({\rm{N/50}}\) \({\rm{HCl}}\) with methyl orange as indicator. If \(\mathrm{30 \mathrm{~mL}}\) of \(\mathrm{\mathrm{HCl}}\) were required, the temporary hardness as parts of \(\mathrm{\mathrm{CaCO}_{3}}\) per \(\mathrm{10^{6}}\) parts of water is

1 \({\rm{150}}\) \({\rm{ppm}}\)
2 \({\rm{300}}\) \({\rm{ppm}}\)
3 \({\rm{450}}\) \({\rm{ppm}}\)
4 \({\rm{600}}\) \({\rm{ppm}}\)
CHXI09:HYDROGEN

315531 Hardness of water is estimated by

1 EDTA method
2 Titrimetric method
3 conductivity method
4 distillation method
CHXI09:HYDROGEN

315532 The degree of hardness of water is usually expressed in terms of

1 ppm by weight of \(\mathrm{MgSO}_{4}\)
2 \(\mathrm{g} / \mathrm{L}\) of \(\mathrm{CaCO}_{3}\) and \(\mathrm{MgCO}_{3}\) present
3 ppm by weight of \(\mathrm{CaCO}_{3}\) irrespective of whether it is actually present
4 ppm of \(\mathrm{CaCO}_{3}\) actually present in water
NEET DIGITAL LIBRARY
CHXI09:HYDROGEN

315529 \(\mathrm{1000 \mathrm{~g}}\) aqueous solution of \(\mathrm{\mathrm{CaCO}_{3}}\) contains 10 \(\mathrm{\mathrm{g}}\) of calcium carbonate. Hardness of solution is

1 \({\rm{10}}\) \({\rm{ppm}}\)
2 \({\rm{100}}\) \({\rm{ppm}}\)
3 \({\rm{1000}}\) \({\rm{ppm}}\)
4 \({\rm{10000}}\) \({\rm{ppm}}\)
CHXI09:HYDROGEN

315530 \(\mathrm{100 \mathrm{~mL}}\) of tap water containing \(\mathrm{\mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}}\) was titrated with \({\rm{N/50}}\) \({\rm{HCl}}\) with methyl orange as indicator. If \(\mathrm{30 \mathrm{~mL}}\) of \(\mathrm{\mathrm{HCl}}\) were required, the temporary hardness as parts of \(\mathrm{\mathrm{CaCO}_{3}}\) per \(\mathrm{10^{6}}\) parts of water is

1 \({\rm{150}}\) \({\rm{ppm}}\)
2 \({\rm{300}}\) \({\rm{ppm}}\)
3 \({\rm{450}}\) \({\rm{ppm}}\)
4 \({\rm{600}}\) \({\rm{ppm}}\)
CHXI09:HYDROGEN

315531 Hardness of water is estimated by

1 EDTA method
2 Titrimetric method
3 conductivity method
4 distillation method
CHXI09:HYDROGEN

315532 The degree of hardness of water is usually expressed in terms of

1 ppm by weight of \(\mathrm{MgSO}_{4}\)
2 \(\mathrm{g} / \mathrm{L}\) of \(\mathrm{CaCO}_{3}\) and \(\mathrm{MgCO}_{3}\) present
3 ppm by weight of \(\mathrm{CaCO}_{3}\) irrespective of whether it is actually present
4 ppm of \(\mathrm{CaCO}_{3}\) actually present in water
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CHXI09:HYDROGEN

315529 \(\mathrm{1000 \mathrm{~g}}\) aqueous solution of \(\mathrm{\mathrm{CaCO}_{3}}\) contains 10 \(\mathrm{\mathrm{g}}\) of calcium carbonate. Hardness of solution is

1 \({\rm{10}}\) \({\rm{ppm}}\)
2 \({\rm{100}}\) \({\rm{ppm}}\)
3 \({\rm{1000}}\) \({\rm{ppm}}\)
4 \({\rm{10000}}\) \({\rm{ppm}}\)
CHXI09:HYDROGEN

315530 \(\mathrm{100 \mathrm{~mL}}\) of tap water containing \(\mathrm{\mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}}\) was titrated with \({\rm{N/50}}\) \({\rm{HCl}}\) with methyl orange as indicator. If \(\mathrm{30 \mathrm{~mL}}\) of \(\mathrm{\mathrm{HCl}}\) were required, the temporary hardness as parts of \(\mathrm{\mathrm{CaCO}_{3}}\) per \(\mathrm{10^{6}}\) parts of water is

1 \({\rm{150}}\) \({\rm{ppm}}\)
2 \({\rm{300}}\) \({\rm{ppm}}\)
3 \({\rm{450}}\) \({\rm{ppm}}\)
4 \({\rm{600}}\) \({\rm{ppm}}\)
CHXI09:HYDROGEN

315531 Hardness of water is estimated by

1 EDTA method
2 Titrimetric method
3 conductivity method
4 distillation method
CHXI09:HYDROGEN

315532 The degree of hardness of water is usually expressed in terms of

1 ppm by weight of \(\mathrm{MgSO}_{4}\)
2 \(\mathrm{g} / \mathrm{L}\) of \(\mathrm{CaCO}_{3}\) and \(\mathrm{MgCO}_{3}\) present
3 ppm by weight of \(\mathrm{CaCO}_{3}\) irrespective of whether it is actually present
4 ppm of \(\mathrm{CaCO}_{3}\) actually present in water
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