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

315927 The ions which participate in the transmission of nerve signals

1 \(\mathrm{Na}^{+}\)
2 \({\rm{B}}{{\rm{e}}^{{\rm{2 + }}}}\)
3 \(\mathrm{Cs}^{+}\)
4 \({\rm{B}}{{\rm{a}}^{{\rm{2 + }}}}\)
CHXI10:THE S-BLOCK ELEMENTS

315928 A deliquescent white crystalline hydroxide \(\mathrm{X}\) reacts with a nitrate \({\rm{Y}}\) to form another hydroxide which decomposes to give an insoluble brown layer of its oxide. \(\mathrm{X}\) is a powerful cautery and breaks down the proteins of skin flesh to a pasty mass. \(\mathrm{X}\) and \(\mathrm{Y}\) are

1 \({\rm{NaOH,AgN}}{{\rm{O}}_3}\)
2 \(\mathrm{NaOH}, \mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2}\)
3 \(\mathrm{NaOH}, \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3}\)
4 \({\rm{Ca}}{({\rm{OH}})_2}{\rm{,HgN}}{{\rm{O}}_3}\)
CHXI10:THE S-BLOCK ELEMENTS

315929 Commonly used substance in the laboratory desiccator is:

1 \(\mathrm{NaCl}\)
2 \(\mathrm{CaCl}_{2}\)
3 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
4 None of these
CHXI10:THE S-BLOCK ELEMENTS

315930 Which of the following is the component in most of the kidney stones ?

1 \((\mathrm{COO})_{2} \mathrm{Ca}\)
2 \((\mathrm{COO})_{2} \mathrm{Ba}\)
3 \((\mathrm{COONa})_{2}\)
4 \((\mathrm{COO})_{2} \mathrm{Mg}\)
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CHXI10:THE S-BLOCK ELEMENTS

315927 The ions which participate in the transmission of nerve signals

1 \(\mathrm{Na}^{+}\)
2 \({\rm{B}}{{\rm{e}}^{{\rm{2 + }}}}\)
3 \(\mathrm{Cs}^{+}\)
4 \({\rm{B}}{{\rm{a}}^{{\rm{2 + }}}}\)
CHXI10:THE S-BLOCK ELEMENTS

315928 A deliquescent white crystalline hydroxide \(\mathrm{X}\) reacts with a nitrate \({\rm{Y}}\) to form another hydroxide which decomposes to give an insoluble brown layer of its oxide. \(\mathrm{X}\) is a powerful cautery and breaks down the proteins of skin flesh to a pasty mass. \(\mathrm{X}\) and \(\mathrm{Y}\) are

1 \({\rm{NaOH,AgN}}{{\rm{O}}_3}\)
2 \(\mathrm{NaOH}, \mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2}\)
3 \(\mathrm{NaOH}, \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3}\)
4 \({\rm{Ca}}{({\rm{OH}})_2}{\rm{,HgN}}{{\rm{O}}_3}\)
CHXI10:THE S-BLOCK ELEMENTS

315929 Commonly used substance in the laboratory desiccator is:

1 \(\mathrm{NaCl}\)
2 \(\mathrm{CaCl}_{2}\)
3 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
4 None of these
CHXI10:THE S-BLOCK ELEMENTS

315930 Which of the following is the component in most of the kidney stones ?

1 \((\mathrm{COO})_{2} \mathrm{Ca}\)
2 \((\mathrm{COO})_{2} \mathrm{Ba}\)
3 \((\mathrm{COONa})_{2}\)
4 \((\mathrm{COO})_{2} \mathrm{Mg}\)
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CHXI10:THE S-BLOCK ELEMENTS

315927 The ions which participate in the transmission of nerve signals

1 \(\mathrm{Na}^{+}\)
2 \({\rm{B}}{{\rm{e}}^{{\rm{2 + }}}}\)
3 \(\mathrm{Cs}^{+}\)
4 \({\rm{B}}{{\rm{a}}^{{\rm{2 + }}}}\)
CHXI10:THE S-BLOCK ELEMENTS

315928 A deliquescent white crystalline hydroxide \(\mathrm{X}\) reacts with a nitrate \({\rm{Y}}\) to form another hydroxide which decomposes to give an insoluble brown layer of its oxide. \(\mathrm{X}\) is a powerful cautery and breaks down the proteins of skin flesh to a pasty mass. \(\mathrm{X}\) and \(\mathrm{Y}\) are

1 \({\rm{NaOH,AgN}}{{\rm{O}}_3}\)
2 \(\mathrm{NaOH}, \mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2}\)
3 \(\mathrm{NaOH}, \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3}\)
4 \({\rm{Ca}}{({\rm{OH}})_2}{\rm{,HgN}}{{\rm{O}}_3}\)
CHXI10:THE S-BLOCK ELEMENTS

315929 Commonly used substance in the laboratory desiccator is:

1 \(\mathrm{NaCl}\)
2 \(\mathrm{CaCl}_{2}\)
3 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
4 None of these
CHXI10:THE S-BLOCK ELEMENTS

315930 Which of the following is the component in most of the kidney stones ?

1 \((\mathrm{COO})_{2} \mathrm{Ca}\)
2 \((\mathrm{COO})_{2} \mathrm{Ba}\)
3 \((\mathrm{COONa})_{2}\)
4 \((\mathrm{COO})_{2} \mathrm{Mg}\)
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CHXI10:THE S-BLOCK ELEMENTS

315927 The ions which participate in the transmission of nerve signals

1 \(\mathrm{Na}^{+}\)
2 \({\rm{B}}{{\rm{e}}^{{\rm{2 + }}}}\)
3 \(\mathrm{Cs}^{+}\)
4 \({\rm{B}}{{\rm{a}}^{{\rm{2 + }}}}\)
CHXI10:THE S-BLOCK ELEMENTS

315928 A deliquescent white crystalline hydroxide \(\mathrm{X}\) reacts with a nitrate \({\rm{Y}}\) to form another hydroxide which decomposes to give an insoluble brown layer of its oxide. \(\mathrm{X}\) is a powerful cautery and breaks down the proteins of skin flesh to a pasty mass. \(\mathrm{X}\) and \(\mathrm{Y}\) are

1 \({\rm{NaOH,AgN}}{{\rm{O}}_3}\)
2 \(\mathrm{NaOH}, \mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2}\)
3 \(\mathrm{NaOH}, \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3}\)
4 \({\rm{Ca}}{({\rm{OH}})_2}{\rm{,HgN}}{{\rm{O}}_3}\)
CHXI10:THE S-BLOCK ELEMENTS

315929 Commonly used substance in the laboratory desiccator is:

1 \(\mathrm{NaCl}\)
2 \(\mathrm{CaCl}_{2}\)
3 \(\mathrm{Na}_{2} \mathrm{CO}_{3}\)
4 None of these
CHXI10:THE S-BLOCK ELEMENTS

315930 Which of the following is the component in most of the kidney stones ?

1 \((\mathrm{COO})_{2} \mathrm{Ca}\)
2 \((\mathrm{COO})_{2} \mathrm{Ba}\)
3 \((\mathrm{COONa})_{2}\)
4 \((\mathrm{COO})_{2} \mathrm{Mg}\)