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

315943 Disodium hydrogen phosphate in presence of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{NH}_{4} \mathrm{OH}\) gives a white ppt. with a solution of \(\mathrm{Mg}^{2+}\) ion. The precipitate is:

1 \(\mathrm{Mg}\left(\mathrm{H}_{2} \mathrm{PO}_{4}\right)_{2}\)
2 \(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)
3 \(\mathrm{Mg}\left(\mathrm{NH}_{4}\right) \mathrm{PO}_{4}\)
4 \(\mathrm{MgHPO}_{4}\)
CHXI10:THE S-BLOCK ELEMENTS

315944 Potassium iodide reacts with acidified \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\). How many moles of KI are required for one mole of \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\) ?

1 \(\frac{1}{6}\)
2 3
3 6
4 \(\frac{3}{2}\)
CHXI10:THE S-BLOCK ELEMENTS

315945 Which one of the following is formed on dissolving \(\mathrm{I}_{2}\) in aqueous solution of \(\mathrm{KI}\) ?

1 \(\mathrm{KIO}_{4}\)
2 \(\mathrm{KIO}\)
3 \(\mathrm{KI}_{3}\)
4 \(\mathrm{KIO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315946 When \({\mathrm{\mathrm{Cl}_{2}}}\) gas is bubbled through aqueous KOH , a fire work explosive (A) is formed along with KCl and \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\). How many grams of (A) will be formed by \({\rm{150}}{\mkern 1mu} {\rm{L}}\,{\rm{of}}\,{\rm{C}}{{\rm{l}}_{\rm{2}}}\), whose pressure is 980 mm Hg at \({\mathrm{25^{\circ} \mathrm{C}}}\) ?

1 323
2 490
3 600
4 575
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CHXI10:THE S-BLOCK ELEMENTS

315943 Disodium hydrogen phosphate in presence of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{NH}_{4} \mathrm{OH}\) gives a white ppt. with a solution of \(\mathrm{Mg}^{2+}\) ion. The precipitate is:

1 \(\mathrm{Mg}\left(\mathrm{H}_{2} \mathrm{PO}_{4}\right)_{2}\)
2 \(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)
3 \(\mathrm{Mg}\left(\mathrm{NH}_{4}\right) \mathrm{PO}_{4}\)
4 \(\mathrm{MgHPO}_{4}\)
CHXI10:THE S-BLOCK ELEMENTS

315944 Potassium iodide reacts with acidified \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\). How many moles of KI are required for one mole of \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\) ?

1 \(\frac{1}{6}\)
2 3
3 6
4 \(\frac{3}{2}\)
CHXI10:THE S-BLOCK ELEMENTS

315945 Which one of the following is formed on dissolving \(\mathrm{I}_{2}\) in aqueous solution of \(\mathrm{KI}\) ?

1 \(\mathrm{KIO}_{4}\)
2 \(\mathrm{KIO}\)
3 \(\mathrm{KI}_{3}\)
4 \(\mathrm{KIO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315946 When \({\mathrm{\mathrm{Cl}_{2}}}\) gas is bubbled through aqueous KOH , a fire work explosive (A) is formed along with KCl and \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\). How many grams of (A) will be formed by \({\rm{150}}{\mkern 1mu} {\rm{L}}\,{\rm{of}}\,{\rm{C}}{{\rm{l}}_{\rm{2}}}\), whose pressure is 980 mm Hg at \({\mathrm{25^{\circ} \mathrm{C}}}\) ?

1 323
2 490
3 600
4 575
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CHXI10:THE S-BLOCK ELEMENTS

315943 Disodium hydrogen phosphate in presence of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{NH}_{4} \mathrm{OH}\) gives a white ppt. with a solution of \(\mathrm{Mg}^{2+}\) ion. The precipitate is:

1 \(\mathrm{Mg}\left(\mathrm{H}_{2} \mathrm{PO}_{4}\right)_{2}\)
2 \(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)
3 \(\mathrm{Mg}\left(\mathrm{NH}_{4}\right) \mathrm{PO}_{4}\)
4 \(\mathrm{MgHPO}_{4}\)
CHXI10:THE S-BLOCK ELEMENTS

315944 Potassium iodide reacts with acidified \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\). How many moles of KI are required for one mole of \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\) ?

1 \(\frac{1}{6}\)
2 3
3 6
4 \(\frac{3}{2}\)
CHXI10:THE S-BLOCK ELEMENTS

315945 Which one of the following is formed on dissolving \(\mathrm{I}_{2}\) in aqueous solution of \(\mathrm{KI}\) ?

1 \(\mathrm{KIO}_{4}\)
2 \(\mathrm{KIO}\)
3 \(\mathrm{KI}_{3}\)
4 \(\mathrm{KIO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315946 When \({\mathrm{\mathrm{Cl}_{2}}}\) gas is bubbled through aqueous KOH , a fire work explosive (A) is formed along with KCl and \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\). How many grams of (A) will be formed by \({\rm{150}}{\mkern 1mu} {\rm{L}}\,{\rm{of}}\,{\rm{C}}{{\rm{l}}_{\rm{2}}}\), whose pressure is 980 mm Hg at \({\mathrm{25^{\circ} \mathrm{C}}}\) ?

1 323
2 490
3 600
4 575
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CHXI10:THE S-BLOCK ELEMENTS

315943 Disodium hydrogen phosphate in presence of \(\mathrm{NH}_{4} \mathrm{Cl}\) and \(\mathrm{NH}_{4} \mathrm{OH}\) gives a white ppt. with a solution of \(\mathrm{Mg}^{2+}\) ion. The precipitate is:

1 \(\mathrm{Mg}\left(\mathrm{H}_{2} \mathrm{PO}_{4}\right)_{2}\)
2 \(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)
3 \(\mathrm{Mg}\left(\mathrm{NH}_{4}\right) \mathrm{PO}_{4}\)
4 \(\mathrm{MgHPO}_{4}\)
CHXI10:THE S-BLOCK ELEMENTS

315944 Potassium iodide reacts with acidified \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\). How many moles of KI are required for one mole of \({\mathrm{\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}}}\) ?

1 \(\frac{1}{6}\)
2 3
3 6
4 \(\frac{3}{2}\)
CHXI10:THE S-BLOCK ELEMENTS

315945 Which one of the following is formed on dissolving \(\mathrm{I}_{2}\) in aqueous solution of \(\mathrm{KI}\) ?

1 \(\mathrm{KIO}_{4}\)
2 \(\mathrm{KIO}\)
3 \(\mathrm{KI}_{3}\)
4 \(\mathrm{KIO}_{3}\)
CHXI10:THE S-BLOCK ELEMENTS

315946 When \({\mathrm{\mathrm{Cl}_{2}}}\) gas is bubbled through aqueous KOH , a fire work explosive (A) is formed along with KCl and \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\). How many grams of (A) will be formed by \({\rm{150}}{\mkern 1mu} {\rm{L}}\,{\rm{of}}\,{\rm{C}}{{\rm{l}}_{\rm{2}}}\), whose pressure is 980 mm Hg at \({\mathrm{25^{\circ} \mathrm{C}}}\) ?

1 323
2 490
3 600
4 575
For More Updates join with Us