Hardness of Water
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CHXI09:HYDROGEN

315533 Match list I with list II and select the correct answer using the codes given below the lists
Column I
Column II
A
Heavy water
P
Bicarbonates of Mg and Ca in water
B
Temporary hard water
Q
No foreign ions in water
C
Soft water
R
\(\mathrm{\mathrm{D}_{2} \mathrm{O}}\)
D
Permanent hard
S
Sulphates and chlorides of water Mg and Ca in water

1 \({\rm{A - R,}}\,\,\,\,{\rm{B - S,}}\,\,\,\,{\rm{C - Q,}}\,\,\,\,{\rm{D - P}}\)
2 \({\rm{A - Q,}}\,\,\,\,{\rm{B - P,}}\,\,\,\,{\rm{C - R,}}\,\,\,\,{\rm{D - S}}\)
3 \({\rm{A - Q,}}\,\,\,\,{\rm{B - S,}}\,\,\,\,{\rm{C - R,}}\,\,\,\,{\rm{D - P}}\)
4 \({\rm{A - R,}}\,\,\,\,{\rm{B - P,}}\,\,\,\,{\rm{C - Q,}}\,\,\,\,{\rm{D - S}}\)
CHXI09:HYDROGEN

315534 Both temporary and permanent hardness is removed on boiling water with

1 \(\mathrm{\mathrm{Ca}(\mathrm{OH})_{2}}\)
2 \(\mathrm{\mathrm{Na}_{2} \mathrm{CO}_{3}}\)
3 \(\mathrm{\mathrm{CaCO}_{3}}\)
4 \(\mathrm{\mathrm{CaO}}\)
CHXI09:HYDROGEN

315535 Which of the following is not true?

1 Hardness of water is shown by its behaviour towards soap
2 The temporary hardness is due to the presence of \(\mathrm{\mathrm{Ca}}\) and \(\mathrm{\mathrm{Mg}}\) bicarbonates
3 Permanent hardness is due to the presence of soluble \(\mathrm{\mathrm{Ca}}\) and \(\mathrm{\mathrm{Mg}}\) sulphates and chloride
4 Permanent hardness can be removed by boiling the water
CHXI09:HYDROGEN

315536 Which method cannot be used to remove hardness of water?

1 Clark's method
2 By adding washing soda
3 Calgon process
4 Filtration of water
NEET DIGITAL LIBRARY
CHXI09:HYDROGEN

315533 Match list I with list II and select the correct answer using the codes given below the lists
Column I
Column II
A
Heavy water
P
Bicarbonates of Mg and Ca in water
B
Temporary hard water
Q
No foreign ions in water
C
Soft water
R
\(\mathrm{\mathrm{D}_{2} \mathrm{O}}\)
D
Permanent hard
S
Sulphates and chlorides of water Mg and Ca in water

1 \({\rm{A - R,}}\,\,\,\,{\rm{B - S,}}\,\,\,\,{\rm{C - Q,}}\,\,\,\,{\rm{D - P}}\)
2 \({\rm{A - Q,}}\,\,\,\,{\rm{B - P,}}\,\,\,\,{\rm{C - R,}}\,\,\,\,{\rm{D - S}}\)
3 \({\rm{A - Q,}}\,\,\,\,{\rm{B - S,}}\,\,\,\,{\rm{C - R,}}\,\,\,\,{\rm{D - P}}\)
4 \({\rm{A - R,}}\,\,\,\,{\rm{B - P,}}\,\,\,\,{\rm{C - Q,}}\,\,\,\,{\rm{D - S}}\)
CHXI09:HYDROGEN

315534 Both temporary and permanent hardness is removed on boiling water with

1 \(\mathrm{\mathrm{Ca}(\mathrm{OH})_{2}}\)
2 \(\mathrm{\mathrm{Na}_{2} \mathrm{CO}_{3}}\)
3 \(\mathrm{\mathrm{CaCO}_{3}}\)
4 \(\mathrm{\mathrm{CaO}}\)
CHXI09:HYDROGEN

315535 Which of the following is not true?

1 Hardness of water is shown by its behaviour towards soap
2 The temporary hardness is due to the presence of \(\mathrm{\mathrm{Ca}}\) and \(\mathrm{\mathrm{Mg}}\) bicarbonates
3 Permanent hardness is due to the presence of soluble \(\mathrm{\mathrm{Ca}}\) and \(\mathrm{\mathrm{Mg}}\) sulphates and chloride
4 Permanent hardness can be removed by boiling the water
CHXI09:HYDROGEN

315536 Which method cannot be used to remove hardness of water?

1 Clark's method
2 By adding washing soda
3 Calgon process
4 Filtration of water
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CHXI09:HYDROGEN

315533 Match list I with list II and select the correct answer using the codes given below the lists
Column I
Column II
A
Heavy water
P
Bicarbonates of Mg and Ca in water
B
Temporary hard water
Q
No foreign ions in water
C
Soft water
R
\(\mathrm{\mathrm{D}_{2} \mathrm{O}}\)
D
Permanent hard
S
Sulphates and chlorides of water Mg and Ca in water

1 \({\rm{A - R,}}\,\,\,\,{\rm{B - S,}}\,\,\,\,{\rm{C - Q,}}\,\,\,\,{\rm{D - P}}\)
2 \({\rm{A - Q,}}\,\,\,\,{\rm{B - P,}}\,\,\,\,{\rm{C - R,}}\,\,\,\,{\rm{D - S}}\)
3 \({\rm{A - Q,}}\,\,\,\,{\rm{B - S,}}\,\,\,\,{\rm{C - R,}}\,\,\,\,{\rm{D - P}}\)
4 \({\rm{A - R,}}\,\,\,\,{\rm{B - P,}}\,\,\,\,{\rm{C - Q,}}\,\,\,\,{\rm{D - S}}\)
CHXI09:HYDROGEN

315534 Both temporary and permanent hardness is removed on boiling water with

1 \(\mathrm{\mathrm{Ca}(\mathrm{OH})_{2}}\)
2 \(\mathrm{\mathrm{Na}_{2} \mathrm{CO}_{3}}\)
3 \(\mathrm{\mathrm{CaCO}_{3}}\)
4 \(\mathrm{\mathrm{CaO}}\)
CHXI09:HYDROGEN

315535 Which of the following is not true?

1 Hardness of water is shown by its behaviour towards soap
2 The temporary hardness is due to the presence of \(\mathrm{\mathrm{Ca}}\) and \(\mathrm{\mathrm{Mg}}\) bicarbonates
3 Permanent hardness is due to the presence of soluble \(\mathrm{\mathrm{Ca}}\) and \(\mathrm{\mathrm{Mg}}\) sulphates and chloride
4 Permanent hardness can be removed by boiling the water
CHXI09:HYDROGEN

315536 Which method cannot be used to remove hardness of water?

1 Clark's method
2 By adding washing soda
3 Calgon process
4 Filtration of water
For More Updates join with Us
CHXI09:HYDROGEN

315533 Match list I with list II and select the correct answer using the codes given below the lists
Column I
Column II
A
Heavy water
P
Bicarbonates of Mg and Ca in water
B
Temporary hard water
Q
No foreign ions in water
C
Soft water
R
\(\mathrm{\mathrm{D}_{2} \mathrm{O}}\)
D
Permanent hard
S
Sulphates and chlorides of water Mg and Ca in water

1 \({\rm{A - R,}}\,\,\,\,{\rm{B - S,}}\,\,\,\,{\rm{C - Q,}}\,\,\,\,{\rm{D - P}}\)
2 \({\rm{A - Q,}}\,\,\,\,{\rm{B - P,}}\,\,\,\,{\rm{C - R,}}\,\,\,\,{\rm{D - S}}\)
3 \({\rm{A - Q,}}\,\,\,\,{\rm{B - S,}}\,\,\,\,{\rm{C - R,}}\,\,\,\,{\rm{D - P}}\)
4 \({\rm{A - R,}}\,\,\,\,{\rm{B - P,}}\,\,\,\,{\rm{C - Q,}}\,\,\,\,{\rm{D - S}}\)
CHXI09:HYDROGEN

315534 Both temporary and permanent hardness is removed on boiling water with

1 \(\mathrm{\mathrm{Ca}(\mathrm{OH})_{2}}\)
2 \(\mathrm{\mathrm{Na}_{2} \mathrm{CO}_{3}}\)
3 \(\mathrm{\mathrm{CaCO}_{3}}\)
4 \(\mathrm{\mathrm{CaO}}\)
CHXI09:HYDROGEN

315535 Which of the following is not true?

1 Hardness of water is shown by its behaviour towards soap
2 The temporary hardness is due to the presence of \(\mathrm{\mathrm{Ca}}\) and \(\mathrm{\mathrm{Mg}}\) bicarbonates
3 Permanent hardness is due to the presence of soluble \(\mathrm{\mathrm{Ca}}\) and \(\mathrm{\mathrm{Mg}}\) sulphates and chloride
4 Permanent hardness can be removed by boiling the water
CHXI09:HYDROGEN

315536 Which method cannot be used to remove hardness of water?

1 Clark's method
2 By adding washing soda
3 Calgon process
4 Filtration of water
NEET DIGITAL LIBRARY