Some Important Compounds of Calcium
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CHXI10:THE S-BLOCK ELEMENTS

316012 Sodium hypohalite when dissolved in water will turn

1 blue litmus red
2 red litmus blue
3 red litmus green
4 no change
CHXI10:THE S-BLOCK ELEMENTS

316013 When sulphur is heated with \(\mathrm{NaOH}\) (aq). The compounds formed are

1 \(\mathrm{Na}_{2} \mathrm{~S}+\mathrm{H}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{SO}_{3}+\mathrm{H}_{2} \mathrm{O}\)
3 \({\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S + N}}{{\rm{a}}_{\rm{2}}}{{\rm{S}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{ + }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3} + {{\rm{H}}_2}{\rm{O}}\)
CHXI10:THE S-BLOCK ELEMENTS

316014 Caustic soda is

1 Efflorescent
2 Hygroscopic
3 Deliquescent
4 Oxidant
CHXI10:THE S-BLOCK ELEMENTS

316015 Which of the following statements about \(\mathrm{Na}_{2} \mathrm{O}_{2}\) is not correct?

1 It is diamagnetic in nature
2 It is derivative of \(\mathrm{H}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{Na}_{2} \mathrm{O}_{2}\) oxidises \(\mathrm{Cr}^{3+}\) to \(\mathrm{CrO}_{4}^{2-}\) in acid medium
4 It is the super oxide of sodium
JEE - 2014
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CHXI10:THE S-BLOCK ELEMENTS

316012 Sodium hypohalite when dissolved in water will turn

1 blue litmus red
2 red litmus blue
3 red litmus green
4 no change
CHXI10:THE S-BLOCK ELEMENTS

316013 When sulphur is heated with \(\mathrm{NaOH}\) (aq). The compounds formed are

1 \(\mathrm{Na}_{2} \mathrm{~S}+\mathrm{H}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{SO}_{3}+\mathrm{H}_{2} \mathrm{O}\)
3 \({\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S + N}}{{\rm{a}}_{\rm{2}}}{{\rm{S}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{ + }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3} + {{\rm{H}}_2}{\rm{O}}\)
CHXI10:THE S-BLOCK ELEMENTS

316014 Caustic soda is

1 Efflorescent
2 Hygroscopic
3 Deliquescent
4 Oxidant
CHXI10:THE S-BLOCK ELEMENTS

316015 Which of the following statements about \(\mathrm{Na}_{2} \mathrm{O}_{2}\) is not correct?

1 It is diamagnetic in nature
2 It is derivative of \(\mathrm{H}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{Na}_{2} \mathrm{O}_{2}\) oxidises \(\mathrm{Cr}^{3+}\) to \(\mathrm{CrO}_{4}^{2-}\) in acid medium
4 It is the super oxide of sodium
JEE - 2014
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CHXI10:THE S-BLOCK ELEMENTS

316012 Sodium hypohalite when dissolved in water will turn

1 blue litmus red
2 red litmus blue
3 red litmus green
4 no change
CHXI10:THE S-BLOCK ELEMENTS

316013 When sulphur is heated with \(\mathrm{NaOH}\) (aq). The compounds formed are

1 \(\mathrm{Na}_{2} \mathrm{~S}+\mathrm{H}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{SO}_{3}+\mathrm{H}_{2} \mathrm{O}\)
3 \({\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S + N}}{{\rm{a}}_{\rm{2}}}{{\rm{S}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{ + }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3} + {{\rm{H}}_2}{\rm{O}}\)
CHXI10:THE S-BLOCK ELEMENTS

316014 Caustic soda is

1 Efflorescent
2 Hygroscopic
3 Deliquescent
4 Oxidant
CHXI10:THE S-BLOCK ELEMENTS

316015 Which of the following statements about \(\mathrm{Na}_{2} \mathrm{O}_{2}\) is not correct?

1 It is diamagnetic in nature
2 It is derivative of \(\mathrm{H}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{Na}_{2} \mathrm{O}_{2}\) oxidises \(\mathrm{Cr}^{3+}\) to \(\mathrm{CrO}_{4}^{2-}\) in acid medium
4 It is the super oxide of sodium
JEE - 2014
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CHXI10:THE S-BLOCK ELEMENTS

316012 Sodium hypohalite when dissolved in water will turn

1 blue litmus red
2 red litmus blue
3 red litmus green
4 no change
CHXI10:THE S-BLOCK ELEMENTS

316013 When sulphur is heated with \(\mathrm{NaOH}\) (aq). The compounds formed are

1 \(\mathrm{Na}_{2} \mathrm{~S}+\mathrm{H}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{SO}_{3}+\mathrm{H}_{2} \mathrm{O}\)
3 \({\rm{N}}{{\rm{a}}_{\rm{2}}}{\rm{S + N}}{{\rm{a}}_{\rm{2}}}{{\rm{S}}_{\rm{2}}}{{\rm{O}}_{\rm{3}}}{\rm{ + }}{{\rm{H}}_{\rm{2}}}{\rm{O}}\)
4 \({\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3} + {{\rm{H}}_2}{\rm{O}}\)
CHXI10:THE S-BLOCK ELEMENTS

316014 Caustic soda is

1 Efflorescent
2 Hygroscopic
3 Deliquescent
4 Oxidant
CHXI10:THE S-BLOCK ELEMENTS

316015 Which of the following statements about \(\mathrm{Na}_{2} \mathrm{O}_{2}\) is not correct?

1 It is diamagnetic in nature
2 It is derivative of \(\mathrm{H}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{Na}_{2} \mathrm{O}_{2}\) oxidises \(\mathrm{Cr}^{3+}\) to \(\mathrm{CrO}_{4}^{2-}\) in acid medium
4 It is the super oxide of sodium
JEE - 2014
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