Hardness of Water
CHXI09:HYDROGEN

315713 The boiling point water is exceptionally high because

1 There is covalent bond between \(\mathrm{\mathrm{H}}\) and \(\mathrm{\mathrm{O}}\)
2 Water molecule is linear
3 Water molecules associate due to hydrogen bonding
4 Water molecular is not linear
CHXI09:HYDROGEN

315714 Hydrogen has three isotopes and oxygen has two isotopes. So, the number of water molecules found is

1 6
2 12
3 18
4 9
CHXI09:HYDROGEN

315715 Pure water can be obtained from sea water by

1 Centrifugation
2 Plasmolysis
3 Reverse osmosis
4 Sedimentation
CHXI09:HYDROGEN

315716 Water contracts on heating

1 To \(\mathrm{100^{\circ} \mathrm{C}}\)
2 From \(\mathrm{0^{\circ} \mathrm{C}}\) to \(\mathrm{4^{\circ} \mathrm{C}}\)
3 To \(\mathrm{273 \mathrm{~K}}\)
4 From \(\mathrm{10^{\circ} \mathrm{C}}\) to \(\mathrm{20^{\circ} \mathrm{C}}\)
CHXI09:HYDROGEN

315717 The maximum possible number of hydrogen bonds a water molecule can form in ice is

1 1
2 2
3 3
4 4
CHXI09:HYDROGEN

315713 The boiling point water is exceptionally high because

1 There is covalent bond between \(\mathrm{\mathrm{H}}\) and \(\mathrm{\mathrm{O}}\)
2 Water molecule is linear
3 Water molecules associate due to hydrogen bonding
4 Water molecular is not linear
CHXI09:HYDROGEN

315714 Hydrogen has three isotopes and oxygen has two isotopes. So, the number of water molecules found is

1 6
2 12
3 18
4 9
CHXI09:HYDROGEN

315715 Pure water can be obtained from sea water by

1 Centrifugation
2 Plasmolysis
3 Reverse osmosis
4 Sedimentation
CHXI09:HYDROGEN

315716 Water contracts on heating

1 To \(\mathrm{100^{\circ} \mathrm{C}}\)
2 From \(\mathrm{0^{\circ} \mathrm{C}}\) to \(\mathrm{4^{\circ} \mathrm{C}}\)
3 To \(\mathrm{273 \mathrm{~K}}\)
4 From \(\mathrm{10^{\circ} \mathrm{C}}\) to \(\mathrm{20^{\circ} \mathrm{C}}\)
CHXI09:HYDROGEN

315717 The maximum possible number of hydrogen bonds a water molecule can form in ice is

1 1
2 2
3 3
4 4
CHXI09:HYDROGEN

315713 The boiling point water is exceptionally high because

1 There is covalent bond between \(\mathrm{\mathrm{H}}\) and \(\mathrm{\mathrm{O}}\)
2 Water molecule is linear
3 Water molecules associate due to hydrogen bonding
4 Water molecular is not linear
CHXI09:HYDROGEN

315714 Hydrogen has three isotopes and oxygen has two isotopes. So, the number of water molecules found is

1 6
2 12
3 18
4 9
CHXI09:HYDROGEN

315715 Pure water can be obtained from sea water by

1 Centrifugation
2 Plasmolysis
3 Reverse osmosis
4 Sedimentation
CHXI09:HYDROGEN

315716 Water contracts on heating

1 To \(\mathrm{100^{\circ} \mathrm{C}}\)
2 From \(\mathrm{0^{\circ} \mathrm{C}}\) to \(\mathrm{4^{\circ} \mathrm{C}}\)
3 To \(\mathrm{273 \mathrm{~K}}\)
4 From \(\mathrm{10^{\circ} \mathrm{C}}\) to \(\mathrm{20^{\circ} \mathrm{C}}\)
CHXI09:HYDROGEN

315717 The maximum possible number of hydrogen bonds a water molecule can form in ice is

1 1
2 2
3 3
4 4
CHXI09:HYDROGEN

315713 The boiling point water is exceptionally high because

1 There is covalent bond between \(\mathrm{\mathrm{H}}\) and \(\mathrm{\mathrm{O}}\)
2 Water molecule is linear
3 Water molecules associate due to hydrogen bonding
4 Water molecular is not linear
CHXI09:HYDROGEN

315714 Hydrogen has three isotopes and oxygen has two isotopes. So, the number of water molecules found is

1 6
2 12
3 18
4 9
CHXI09:HYDROGEN

315715 Pure water can be obtained from sea water by

1 Centrifugation
2 Plasmolysis
3 Reverse osmosis
4 Sedimentation
CHXI09:HYDROGEN

315716 Water contracts on heating

1 To \(\mathrm{100^{\circ} \mathrm{C}}\)
2 From \(\mathrm{0^{\circ} \mathrm{C}}\) to \(\mathrm{4^{\circ} \mathrm{C}}\)
3 To \(\mathrm{273 \mathrm{~K}}\)
4 From \(\mathrm{10^{\circ} \mathrm{C}}\) to \(\mathrm{20^{\circ} \mathrm{C}}\)
CHXI09:HYDROGEN

315717 The maximum possible number of hydrogen bonds a water molecule can form in ice is

1 1
2 2
3 3
4 4
CHXI09:HYDROGEN

315713 The boiling point water is exceptionally high because

1 There is covalent bond between \(\mathrm{\mathrm{H}}\) and \(\mathrm{\mathrm{O}}\)
2 Water molecule is linear
3 Water molecules associate due to hydrogen bonding
4 Water molecular is not linear
CHXI09:HYDROGEN

315714 Hydrogen has three isotopes and oxygen has two isotopes. So, the number of water molecules found is

1 6
2 12
3 18
4 9
CHXI09:HYDROGEN

315715 Pure water can be obtained from sea water by

1 Centrifugation
2 Plasmolysis
3 Reverse osmosis
4 Sedimentation
CHXI09:HYDROGEN

315716 Water contracts on heating

1 To \(\mathrm{100^{\circ} \mathrm{C}}\)
2 From \(\mathrm{0^{\circ} \mathrm{C}}\) to \(\mathrm{4^{\circ} \mathrm{C}}\)
3 To \(\mathrm{273 \mathrm{~K}}\)
4 From \(\mathrm{10^{\circ} \mathrm{C}}\) to \(\mathrm{20^{\circ} \mathrm{C}}\)
CHXI09:HYDROGEN

315717 The maximum possible number of hydrogen bonds a water molecule can form in ice is

1 1
2 2
3 3
4 4