Miscellaneous Questions based on s-block Elements
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CHXI10:THE S-BLOCK ELEMENTS

315915 Which of the following alkali metal carbonate is least stable and decomposes readily?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{K}_{2} \mathrm{CO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315909 A sodium salt of an unknown anion when treated with \(\mathrm{MgCl}_{2}\) gives white precipitate only on boiling. The anion is

1 \(\mathrm{SO}_{4}^{2-}\)
2 \(\mathrm{HCO}_{3}^{-}\)
3 \(\mathrm{CO}_{3}^{2-}\)
4 \(\mathrm{NO}_{3}^{-}\)
CHXI10:THE S-BLOCK ELEMENTS

315910 Which does not exists in solid state?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{NaHCO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315911 Which of the following disproportionate on heating?

1 \(\mathrm{Na}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{BaO}\)
4 \(\mathrm{Li}_{2} \mathrm{O}\)
CHXI10:THE S-BLOCK ELEMENTS

315912 Among the following, the one that gives pink violet colour to the Bunsen flame is

1 \(\mathrm{NaCl}\)
2 \(\mathrm{BaCl}_{2}\)
3 \(\mathrm{CsCl}\)
4 \(\mathrm{KCl}\)
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CHXI10:THE S-BLOCK ELEMENTS

315915 Which of the following alkali metal carbonate is least stable and decomposes readily?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{K}_{2} \mathrm{CO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315909 A sodium salt of an unknown anion when treated with \(\mathrm{MgCl}_{2}\) gives white precipitate only on boiling. The anion is

1 \(\mathrm{SO}_{4}^{2-}\)
2 \(\mathrm{HCO}_{3}^{-}\)
3 \(\mathrm{CO}_{3}^{2-}\)
4 \(\mathrm{NO}_{3}^{-}\)
CHXI10:THE S-BLOCK ELEMENTS

315910 Which does not exists in solid state?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{NaHCO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315911 Which of the following disproportionate on heating?

1 \(\mathrm{Na}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{BaO}\)
4 \(\mathrm{Li}_{2} \mathrm{O}\)
CHXI10:THE S-BLOCK ELEMENTS

315912 Among the following, the one that gives pink violet colour to the Bunsen flame is

1 \(\mathrm{NaCl}\)
2 \(\mathrm{BaCl}_{2}\)
3 \(\mathrm{CsCl}\)
4 \(\mathrm{KCl}\)
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CHXI10:THE S-BLOCK ELEMENTS

315915 Which of the following alkali metal carbonate is least stable and decomposes readily?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{K}_{2} \mathrm{CO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315909 A sodium salt of an unknown anion when treated with \(\mathrm{MgCl}_{2}\) gives white precipitate only on boiling. The anion is

1 \(\mathrm{SO}_{4}^{2-}\)
2 \(\mathrm{HCO}_{3}^{-}\)
3 \(\mathrm{CO}_{3}^{2-}\)
4 \(\mathrm{NO}_{3}^{-}\)
CHXI10:THE S-BLOCK ELEMENTS

315910 Which does not exists in solid state?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{NaHCO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315911 Which of the following disproportionate on heating?

1 \(\mathrm{Na}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{BaO}\)
4 \(\mathrm{Li}_{2} \mathrm{O}\)
CHXI10:THE S-BLOCK ELEMENTS

315912 Among the following, the one that gives pink violet colour to the Bunsen flame is

1 \(\mathrm{NaCl}\)
2 \(\mathrm{BaCl}_{2}\)
3 \(\mathrm{CsCl}\)
4 \(\mathrm{KCl}\)
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CHXI10:THE S-BLOCK ELEMENTS

315915 Which of the following alkali metal carbonate is least stable and decomposes readily?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{K}_{2} \mathrm{CO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315909 A sodium salt of an unknown anion when treated with \(\mathrm{MgCl}_{2}\) gives white precipitate only on boiling. The anion is

1 \(\mathrm{SO}_{4}^{2-}\)
2 \(\mathrm{HCO}_{3}^{-}\)
3 \(\mathrm{CO}_{3}^{2-}\)
4 \(\mathrm{NO}_{3}^{-}\)
CHXI10:THE S-BLOCK ELEMENTS

315910 Which does not exists in solid state?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{NaHCO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315911 Which of the following disproportionate on heating?

1 \(\mathrm{Na}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{BaO}\)
4 \(\mathrm{Li}_{2} \mathrm{O}\)
CHXI10:THE S-BLOCK ELEMENTS

315912 Among the following, the one that gives pink violet colour to the Bunsen flame is

1 \(\mathrm{NaCl}\)
2 \(\mathrm{BaCl}_{2}\)
3 \(\mathrm{CsCl}\)
4 \(\mathrm{KCl}\)
NEET DIGITAL LIBRARY
CHXI10:THE S-BLOCK ELEMENTS

315915 Which of the following alkali metal carbonate is least stable and decomposes readily?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{K}_{2} \mathrm{CO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315909 A sodium salt of an unknown anion when treated with \(\mathrm{MgCl}_{2}\) gives white precipitate only on boiling. The anion is

1 \(\mathrm{SO}_{4}^{2-}\)
2 \(\mathrm{HCO}_{3}^{-}\)
3 \(\mathrm{CO}_{3}^{2-}\)
4 \(\mathrm{NO}_{3}^{-}\)
CHXI10:THE S-BLOCK ELEMENTS

315910 Which does not exists in solid state?

1 \(\mathrm{LiHCO}_{3}\)
2 \(\mathrm{CaCO}_{3}\)
3 \(\mathrm{NaHCO}_{3}\)
4 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315911 Which of the following disproportionate on heating?

1 \(\mathrm{Na}_{2} \mathrm{O}\)
2 \(\mathrm{Na}_{2} \mathrm{O}_{2}\)
3 \(\mathrm{BaO}\)
4 \(\mathrm{Li}_{2} \mathrm{O}\)
CHXI10:THE S-BLOCK ELEMENTS

315912 Among the following, the one that gives pink violet colour to the Bunsen flame is

1 \(\mathrm{NaCl}\)
2 \(\mathrm{BaCl}_{2}\)
3 \(\mathrm{CsCl}\)
4 \(\mathrm{KCl}\)