189666
In the thermite process the reducing agent is
1 \(Al\)
2 \(C\)
3 \(Mg\)
4 \(Na\)
Explanation:
(a) \(Al\) is used as reducing agent in thermite process.
11. THE P-BLOCK ELEMENTS
189667
In Goldschmidt aluminothermic process, thermite contains
1 \(3\) parts of \(A{l_2}{O_3}\) and \(4\) parts of \(Al\)
2 \(3\) parts of \(F{e_2}{O_3}\) and \(2\) parts of \(Al\)
3 \(3\) parts of \(F{e_2}{O_3}\) and \(1\) part of \(Al\)
4 \(1\) part of \(F{e_2}{O_3}\) and \(1\) part of \(Al\)
Explanation:
(c) In Goldschmidt aluminothermic process, thermite contains \(3\) parts of \(F{e_2}{O_3}\) and \(1\) part of \(Al\).
11. THE P-BLOCK ELEMENTS
189668
Bauxite containing impurities of iron oxide is purified by
1 Hoop's process
2 Serpeck's process
3 Baeyer's process
4 Electrolytic process
Explanation:
(c) For the purification of red bauxite which contains iron oxide as impurity \(\to\) Baeyer’s process. For the purification of white bauxite which contains silica as the main impurity Serpeck’s process.
11. THE P-BLOCK ELEMENTS
189669
In the purification of bauxite by Hall's process
1 Bauxite ore is heated with \(NaOH\) solution at \({50\,^o}C\)
2 Bauxite ore is fused with \(N{a_2}C{O_3}\)
3 Bauxite ore is fused with coke and heated at \({1800\,^o}C\) in a current of nitrogen
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11. THE P-BLOCK ELEMENTS
189666
In the thermite process the reducing agent is
1 \(Al\)
2 \(C\)
3 \(Mg\)
4 \(Na\)
Explanation:
(a) \(Al\) is used as reducing agent in thermite process.
11. THE P-BLOCK ELEMENTS
189667
In Goldschmidt aluminothermic process, thermite contains
1 \(3\) parts of \(A{l_2}{O_3}\) and \(4\) parts of \(Al\)
2 \(3\) parts of \(F{e_2}{O_3}\) and \(2\) parts of \(Al\)
3 \(3\) parts of \(F{e_2}{O_3}\) and \(1\) part of \(Al\)
4 \(1\) part of \(F{e_2}{O_3}\) and \(1\) part of \(Al\)
Explanation:
(c) In Goldschmidt aluminothermic process, thermite contains \(3\) parts of \(F{e_2}{O_3}\) and \(1\) part of \(Al\).
11. THE P-BLOCK ELEMENTS
189668
Bauxite containing impurities of iron oxide is purified by
1 Hoop's process
2 Serpeck's process
3 Baeyer's process
4 Electrolytic process
Explanation:
(c) For the purification of red bauxite which contains iron oxide as impurity \(\to\) Baeyer’s process. For the purification of white bauxite which contains silica as the main impurity Serpeck’s process.
11. THE P-BLOCK ELEMENTS
189669
In the purification of bauxite by Hall's process
1 Bauxite ore is heated with \(NaOH\) solution at \({50\,^o}C\)
2 Bauxite ore is fused with \(N{a_2}C{O_3}\)
3 Bauxite ore is fused with coke and heated at \({1800\,^o}C\) in a current of nitrogen
189666
In the thermite process the reducing agent is
1 \(Al\)
2 \(C\)
3 \(Mg\)
4 \(Na\)
Explanation:
(a) \(Al\) is used as reducing agent in thermite process.
11. THE P-BLOCK ELEMENTS
189667
In Goldschmidt aluminothermic process, thermite contains
1 \(3\) parts of \(A{l_2}{O_3}\) and \(4\) parts of \(Al\)
2 \(3\) parts of \(F{e_2}{O_3}\) and \(2\) parts of \(Al\)
3 \(3\) parts of \(F{e_2}{O_3}\) and \(1\) part of \(Al\)
4 \(1\) part of \(F{e_2}{O_3}\) and \(1\) part of \(Al\)
Explanation:
(c) In Goldschmidt aluminothermic process, thermite contains \(3\) parts of \(F{e_2}{O_3}\) and \(1\) part of \(Al\).
11. THE P-BLOCK ELEMENTS
189668
Bauxite containing impurities of iron oxide is purified by
1 Hoop's process
2 Serpeck's process
3 Baeyer's process
4 Electrolytic process
Explanation:
(c) For the purification of red bauxite which contains iron oxide as impurity \(\to\) Baeyer’s process. For the purification of white bauxite which contains silica as the main impurity Serpeck’s process.
11. THE P-BLOCK ELEMENTS
189669
In the purification of bauxite by Hall's process
1 Bauxite ore is heated with \(NaOH\) solution at \({50\,^o}C\)
2 Bauxite ore is fused with \(N{a_2}C{O_3}\)
3 Bauxite ore is fused with coke and heated at \({1800\,^o}C\) in a current of nitrogen
189666
In the thermite process the reducing agent is
1 \(Al\)
2 \(C\)
3 \(Mg\)
4 \(Na\)
Explanation:
(a) \(Al\) is used as reducing agent in thermite process.
11. THE P-BLOCK ELEMENTS
189667
In Goldschmidt aluminothermic process, thermite contains
1 \(3\) parts of \(A{l_2}{O_3}\) and \(4\) parts of \(Al\)
2 \(3\) parts of \(F{e_2}{O_3}\) and \(2\) parts of \(Al\)
3 \(3\) parts of \(F{e_2}{O_3}\) and \(1\) part of \(Al\)
4 \(1\) part of \(F{e_2}{O_3}\) and \(1\) part of \(Al\)
Explanation:
(c) In Goldschmidt aluminothermic process, thermite contains \(3\) parts of \(F{e_2}{O_3}\) and \(1\) part of \(Al\).
11. THE P-BLOCK ELEMENTS
189668
Bauxite containing impurities of iron oxide is purified by
1 Hoop's process
2 Serpeck's process
3 Baeyer's process
4 Electrolytic process
Explanation:
(c) For the purification of red bauxite which contains iron oxide as impurity \(\to\) Baeyer’s process. For the purification of white bauxite which contains silica as the main impurity Serpeck’s process.
11. THE P-BLOCK ELEMENTS
189669
In the purification of bauxite by Hall's process
1 Bauxite ore is heated with \(NaOH\) solution at \({50\,^o}C\)
2 Bauxite ore is fused with \(N{a_2}C{O_3}\)
3 Bauxite ore is fused with coke and heated at \({1800\,^o}C\) in a current of nitrogen