Preparation and Properties of Magnesium and its Compounds
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CHXI10:THE S-BLOCK ELEMENTS

315938 Carbon cannot be used to produce magnesium by chemical reduction process, because

1 Carbon is not a powerful reducing agent
2 Magnesium reacts with carbon to form carbides at high temperatures
3 Magnesium is less electropositive than carbon
4 Carbon does not have affinity for magnesium at any temperature
CHXI10:THE S-BLOCK ELEMENTS

315939 Anhydrous \(\mathrm{MgCl}_{2}\) can be prepared by heating
\(\mathrm{MgCl}_{2} .2 \mathrm{H}_{2} \mathrm{O}\):

1 Until it fuses
2 With lime
3 With carbon
4 In a current of dry \(\mathrm{HCl}\) gas
CHXI10:THE S-BLOCK ELEMENTS

315940 A piece of magnesium ribbon was heated to redness in an atmosphere of \(\mathrm{N}_{2}\) and then treated with \(\mathrm{H}_{2} \mathrm{O}\), the gas evolved is:

1 Ammonia
2 Hydrogen
3 Nitrogen
4 Oxygen
CHXI10:THE S-BLOCK ELEMENTS

315941 A metal \(\mathrm{X}\) on heating in nitrogen gas gives \(\mathrm{Y}\). \(\mathrm{Y}\) on treatment with \(\mathrm{H}_{2} \mathrm{O}\) gives a colourless gas which when passed through \(\mathrm{CuSO}_{4}\) solution gives a blue colour. \(\mathrm{Y}\) is

1 \(\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}\)
2 \({\rm{M}}{{\rm{g}}_3}{{\rm{N}}_2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{MgO}\)
CHXI10:THE S-BLOCK ELEMENTS

315942 \(\mathrm{MgCl}_{2} \cdot 6 \mathrm{H}_{2} \mathrm{O}\) crystals, on heating give

1 Anhydrous \(\mathrm{MgCl}_{2}\)
2 \(\mathrm{MgO}\)
3 \(\mathrm{MgCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\)
4 none of these
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CHXI10:THE S-BLOCK ELEMENTS

315938 Carbon cannot be used to produce magnesium by chemical reduction process, because

1 Carbon is not a powerful reducing agent
2 Magnesium reacts with carbon to form carbides at high temperatures
3 Magnesium is less electropositive than carbon
4 Carbon does not have affinity for magnesium at any temperature
CHXI10:THE S-BLOCK ELEMENTS

315939 Anhydrous \(\mathrm{MgCl}_{2}\) can be prepared by heating
\(\mathrm{MgCl}_{2} .2 \mathrm{H}_{2} \mathrm{O}\):

1 Until it fuses
2 With lime
3 With carbon
4 In a current of dry \(\mathrm{HCl}\) gas
CHXI10:THE S-BLOCK ELEMENTS

315940 A piece of magnesium ribbon was heated to redness in an atmosphere of \(\mathrm{N}_{2}\) and then treated with \(\mathrm{H}_{2} \mathrm{O}\), the gas evolved is:

1 Ammonia
2 Hydrogen
3 Nitrogen
4 Oxygen
CHXI10:THE S-BLOCK ELEMENTS

315941 A metal \(\mathrm{X}\) on heating in nitrogen gas gives \(\mathrm{Y}\). \(\mathrm{Y}\) on treatment with \(\mathrm{H}_{2} \mathrm{O}\) gives a colourless gas which when passed through \(\mathrm{CuSO}_{4}\) solution gives a blue colour. \(\mathrm{Y}\) is

1 \(\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}\)
2 \({\rm{M}}{{\rm{g}}_3}{{\rm{N}}_2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{MgO}\)
CHXI10:THE S-BLOCK ELEMENTS

315942 \(\mathrm{MgCl}_{2} \cdot 6 \mathrm{H}_{2} \mathrm{O}\) crystals, on heating give

1 Anhydrous \(\mathrm{MgCl}_{2}\)
2 \(\mathrm{MgO}\)
3 \(\mathrm{MgCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\)
4 none of these
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CHXI10:THE S-BLOCK ELEMENTS

315938 Carbon cannot be used to produce magnesium by chemical reduction process, because

1 Carbon is not a powerful reducing agent
2 Magnesium reacts with carbon to form carbides at high temperatures
3 Magnesium is less electropositive than carbon
4 Carbon does not have affinity for magnesium at any temperature
CHXI10:THE S-BLOCK ELEMENTS

315939 Anhydrous \(\mathrm{MgCl}_{2}\) can be prepared by heating
\(\mathrm{MgCl}_{2} .2 \mathrm{H}_{2} \mathrm{O}\):

1 Until it fuses
2 With lime
3 With carbon
4 In a current of dry \(\mathrm{HCl}\) gas
CHXI10:THE S-BLOCK ELEMENTS

315940 A piece of magnesium ribbon was heated to redness in an atmosphere of \(\mathrm{N}_{2}\) and then treated with \(\mathrm{H}_{2} \mathrm{O}\), the gas evolved is:

1 Ammonia
2 Hydrogen
3 Nitrogen
4 Oxygen
CHXI10:THE S-BLOCK ELEMENTS

315941 A metal \(\mathrm{X}\) on heating in nitrogen gas gives \(\mathrm{Y}\). \(\mathrm{Y}\) on treatment with \(\mathrm{H}_{2} \mathrm{O}\) gives a colourless gas which when passed through \(\mathrm{CuSO}_{4}\) solution gives a blue colour. \(\mathrm{Y}\) is

1 \(\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}\)
2 \({\rm{M}}{{\rm{g}}_3}{{\rm{N}}_2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{MgO}\)
CHXI10:THE S-BLOCK ELEMENTS

315942 \(\mathrm{MgCl}_{2} \cdot 6 \mathrm{H}_{2} \mathrm{O}\) crystals, on heating give

1 Anhydrous \(\mathrm{MgCl}_{2}\)
2 \(\mathrm{MgO}\)
3 \(\mathrm{MgCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\)
4 none of these
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CHXI10:THE S-BLOCK ELEMENTS

315938 Carbon cannot be used to produce magnesium by chemical reduction process, because

1 Carbon is not a powerful reducing agent
2 Magnesium reacts with carbon to form carbides at high temperatures
3 Magnesium is less electropositive than carbon
4 Carbon does not have affinity for magnesium at any temperature
CHXI10:THE S-BLOCK ELEMENTS

315939 Anhydrous \(\mathrm{MgCl}_{2}\) can be prepared by heating
\(\mathrm{MgCl}_{2} .2 \mathrm{H}_{2} \mathrm{O}\):

1 Until it fuses
2 With lime
3 With carbon
4 In a current of dry \(\mathrm{HCl}\) gas
CHXI10:THE S-BLOCK ELEMENTS

315940 A piece of magnesium ribbon was heated to redness in an atmosphere of \(\mathrm{N}_{2}\) and then treated with \(\mathrm{H}_{2} \mathrm{O}\), the gas evolved is:

1 Ammonia
2 Hydrogen
3 Nitrogen
4 Oxygen
CHXI10:THE S-BLOCK ELEMENTS

315941 A metal \(\mathrm{X}\) on heating in nitrogen gas gives \(\mathrm{Y}\). \(\mathrm{Y}\) on treatment with \(\mathrm{H}_{2} \mathrm{O}\) gives a colourless gas which when passed through \(\mathrm{CuSO}_{4}\) solution gives a blue colour. \(\mathrm{Y}\) is

1 \(\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}\)
2 \({\rm{M}}{{\rm{g}}_3}{{\rm{N}}_2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{MgO}\)
CHXI10:THE S-BLOCK ELEMENTS

315942 \(\mathrm{MgCl}_{2} \cdot 6 \mathrm{H}_{2} \mathrm{O}\) crystals, on heating give

1 Anhydrous \(\mathrm{MgCl}_{2}\)
2 \(\mathrm{MgO}\)
3 \(\mathrm{MgCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\)
4 none of these
NEET DIGITAL LIBRARY
CHXI10:THE S-BLOCK ELEMENTS

315938 Carbon cannot be used to produce magnesium by chemical reduction process, because

1 Carbon is not a powerful reducing agent
2 Magnesium reacts with carbon to form carbides at high temperatures
3 Magnesium is less electropositive than carbon
4 Carbon does not have affinity for magnesium at any temperature
CHXI10:THE S-BLOCK ELEMENTS

315939 Anhydrous \(\mathrm{MgCl}_{2}\) can be prepared by heating
\(\mathrm{MgCl}_{2} .2 \mathrm{H}_{2} \mathrm{O}\):

1 Until it fuses
2 With lime
3 With carbon
4 In a current of dry \(\mathrm{HCl}\) gas
CHXI10:THE S-BLOCK ELEMENTS

315940 A piece of magnesium ribbon was heated to redness in an atmosphere of \(\mathrm{N}_{2}\) and then treated with \(\mathrm{H}_{2} \mathrm{O}\), the gas evolved is:

1 Ammonia
2 Hydrogen
3 Nitrogen
4 Oxygen
CHXI10:THE S-BLOCK ELEMENTS

315941 A metal \(\mathrm{X}\) on heating in nitrogen gas gives \(\mathrm{Y}\). \(\mathrm{Y}\) on treatment with \(\mathrm{H}_{2} \mathrm{O}\) gives a colourless gas which when passed through \(\mathrm{CuSO}_{4}\) solution gives a blue colour. \(\mathrm{Y}\) is

1 \(\mathrm{Mg}\left(\mathrm{NO}_{3}\right)_{2}\)
2 \({\rm{M}}{{\rm{g}}_3}{{\rm{N}}_2}\)
3 \(\mathrm{NH}_{3}\)
4 \(\mathrm{MgO}\)
CHXI10:THE S-BLOCK ELEMENTS

315942 \(\mathrm{MgCl}_{2} \cdot 6 \mathrm{H}_{2} \mathrm{O}\) crystals, on heating give

1 Anhydrous \(\mathrm{MgCl}_{2}\)
2 \(\mathrm{MgO}\)
3 \(\mathrm{MgCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}\)
4 none of these