08. THE D- & F-BLOCK ELEMENTS
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THE d-AND f-BLOCK ELEMENTS

16660 From a solution of \(CuS{O_4}\), the metal used to recover copper is

1 Sodium
2 Iron
3 Silver
4 \(Hg\)
THE d-AND f-BLOCK ELEMENTS

16581 Soil containing both  \(Al \) and \( Fe \) is called

1 Laterite
2 Bauxite
3 Pedalfers
4 Clay
THE d-AND f-BLOCK ELEMENTS

16659 An extremely hot copper wire reacts with steam to give

1 \(CuO\)
2 \(C{u_2}O\)
3 \(C{u_2}{O_2}\)
4 \(Cu{O_2}\)
THE d-AND f-BLOCK ELEMENTS

16958 ‘Bordeaux mixture’ is used as a fungicide. It is a mixture of

1 \(CaSO_4 + Cu(OH)_2\)
2 \(CuSO_4 + Ca(OH)_2\)
3 \(CuSO_4 + CaO\)
4 \(CuO + CaO\)
THE d-AND f-BLOCK ELEMENTS

16959 Which of the following reaction is possible at anode?

1 \(2Cr^{3+} + 7H_2O \rightarrow Cr_2O_7^{2-} + 14 H^+\)
2 \(F_2 \rightarrow 2 F^-\)
3 \(\frac{1}{2} O_2 + 2H^+ \rightarrow H_2O\)
4 None of these
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THE d-AND f-BLOCK ELEMENTS

16660 From a solution of \(CuS{O_4}\), the metal used to recover copper is

1 Sodium
2 Iron
3 Silver
4 \(Hg\)
THE d-AND f-BLOCK ELEMENTS

16581 Soil containing both  \(Al \) and \( Fe \) is called

1 Laterite
2 Bauxite
3 Pedalfers
4 Clay
THE d-AND f-BLOCK ELEMENTS

16659 An extremely hot copper wire reacts with steam to give

1 \(CuO\)
2 \(C{u_2}O\)
3 \(C{u_2}{O_2}\)
4 \(Cu{O_2}\)
THE d-AND f-BLOCK ELEMENTS

16958 ‘Bordeaux mixture’ is used as a fungicide. It is a mixture of

1 \(CaSO_4 + Cu(OH)_2\)
2 \(CuSO_4 + Ca(OH)_2\)
3 \(CuSO_4 + CaO\)
4 \(CuO + CaO\)
THE d-AND f-BLOCK ELEMENTS

16959 Which of the following reaction is possible at anode?

1 \(2Cr^{3+} + 7H_2O \rightarrow Cr_2O_7^{2-} + 14 H^+\)
2 \(F_2 \rightarrow 2 F^-\)
3 \(\frac{1}{2} O_2 + 2H^+ \rightarrow H_2O\)
4 None of these
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THE d-AND f-BLOCK ELEMENTS

16660 From a solution of \(CuS{O_4}\), the metal used to recover copper is

1 Sodium
2 Iron
3 Silver
4 \(Hg\)
THE d-AND f-BLOCK ELEMENTS

16581 Soil containing both  \(Al \) and \( Fe \) is called

1 Laterite
2 Bauxite
3 Pedalfers
4 Clay
THE d-AND f-BLOCK ELEMENTS

16659 An extremely hot copper wire reacts with steam to give

1 \(CuO\)
2 \(C{u_2}O\)
3 \(C{u_2}{O_2}\)
4 \(Cu{O_2}\)
THE d-AND f-BLOCK ELEMENTS

16958 ‘Bordeaux mixture’ is used as a fungicide. It is a mixture of

1 \(CaSO_4 + Cu(OH)_2\)
2 \(CuSO_4 + Ca(OH)_2\)
3 \(CuSO_4 + CaO\)
4 \(CuO + CaO\)
THE d-AND f-BLOCK ELEMENTS

16959 Which of the following reaction is possible at anode?

1 \(2Cr^{3+} + 7H_2O \rightarrow Cr_2O_7^{2-} + 14 H^+\)
2 \(F_2 \rightarrow 2 F^-\)
3 \(\frac{1}{2} O_2 + 2H^+ \rightarrow H_2O\)
4 None of these
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THE d-AND f-BLOCK ELEMENTS

16660 From a solution of \(CuS{O_4}\), the metal used to recover copper is

1 Sodium
2 Iron
3 Silver
4 \(Hg\)
THE d-AND f-BLOCK ELEMENTS

16581 Soil containing both  \(Al \) and \( Fe \) is called

1 Laterite
2 Bauxite
3 Pedalfers
4 Clay
THE d-AND f-BLOCK ELEMENTS

16659 An extremely hot copper wire reacts with steam to give

1 \(CuO\)
2 \(C{u_2}O\)
3 \(C{u_2}{O_2}\)
4 \(Cu{O_2}\)
THE d-AND f-BLOCK ELEMENTS

16958 ‘Bordeaux mixture’ is used as a fungicide. It is a mixture of

1 \(CaSO_4 + Cu(OH)_2\)
2 \(CuSO_4 + Ca(OH)_2\)
3 \(CuSO_4 + CaO\)
4 \(CuO + CaO\)
THE d-AND f-BLOCK ELEMENTS

16959 Which of the following reaction is possible at anode?

1 \(2Cr^{3+} + 7H_2O \rightarrow Cr_2O_7^{2-} + 14 H^+\)
2 \(F_2 \rightarrow 2 F^-\)
3 \(\frac{1}{2} O_2 + 2H^+ \rightarrow H_2O\)
4 None of these
NEET DIGITAL LIBRARY
THE d-AND f-BLOCK ELEMENTS

16660 From a solution of \(CuS{O_4}\), the metal used to recover copper is

1 Sodium
2 Iron
3 Silver
4 \(Hg\)
THE d-AND f-BLOCK ELEMENTS

16581 Soil containing both  \(Al \) and \( Fe \) is called

1 Laterite
2 Bauxite
3 Pedalfers
4 Clay
THE d-AND f-BLOCK ELEMENTS

16659 An extremely hot copper wire reacts with steam to give

1 \(CuO\)
2 \(C{u_2}O\)
3 \(C{u_2}{O_2}\)
4 \(Cu{O_2}\)
THE d-AND f-BLOCK ELEMENTS

16958 ‘Bordeaux mixture’ is used as a fungicide. It is a mixture of

1 \(CaSO_4 + Cu(OH)_2\)
2 \(CuSO_4 + Ca(OH)_2\)
3 \(CuSO_4 + CaO\)
4 \(CuO + CaO\)
THE d-AND f-BLOCK ELEMENTS

16959 Which of the following reaction is possible at anode?

1 \(2Cr^{3+} + 7H_2O \rightarrow Cr_2O_7^{2-} + 14 H^+\)
2 \(F_2 \rightarrow 2 F^-\)
3 \(\frac{1}{2} O_2 + 2H^+ \rightarrow H_2O\)
4 None of these