08. REDOX REACTIONS
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Redox Reactions

18693 Which of these substances is a good reducing agent

1 \(NaOCl\)
2 \(HI\)
3 \(FeC{l_3}\)
4 \(KBr\)
Redox Reactions

19227 Assign \(A, B, C, D\) from given type of reaction.

\(3KCN + Fe{(CN)_3} \downarrow  \longrightarrow {K_3}[Fe{(CN)_6}]\)

1 for coloured ppt./Black ppt.
2 for coloured solution.
3 for clear/colourless solution
4 for white ppt.
Redox Reactions

18643 \({H_2}{O_2}\) reduces \(Mn{O_4}^ - \)ion to

1 \(M{n^ + }\)
2 \(M{n^{2 + }}\)
3 \(M{n^{3 + }}\)
4 \(M{n^ - }\)
Redox Reactions

18644 When a sulphur atom becomes a sulphide ion

1 There is no change in the composition of atom
2 It gains two electrons
3 The mass number changes
4 None of these
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Redox Reactions

18693 Which of these substances is a good reducing agent

1 \(NaOCl\)
2 \(HI\)
3 \(FeC{l_3}\)
4 \(KBr\)
Redox Reactions

19227 Assign \(A, B, C, D\) from given type of reaction.

\(3KCN + Fe{(CN)_3} \downarrow  \longrightarrow {K_3}[Fe{(CN)_6}]\)

1 for coloured ppt./Black ppt.
2 for coloured solution.
3 for clear/colourless solution
4 for white ppt.
Redox Reactions

18643 \({H_2}{O_2}\) reduces \(Mn{O_4}^ - \)ion to

1 \(M{n^ + }\)
2 \(M{n^{2 + }}\)
3 \(M{n^{3 + }}\)
4 \(M{n^ - }\)
Redox Reactions

18644 When a sulphur atom becomes a sulphide ion

1 There is no change in the composition of atom
2 It gains two electrons
3 The mass number changes
4 None of these
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Redox Reactions

18693 Which of these substances is a good reducing agent

1 \(NaOCl\)
2 \(HI\)
3 \(FeC{l_3}\)
4 \(KBr\)
Redox Reactions

19227 Assign \(A, B, C, D\) from given type of reaction.

\(3KCN + Fe{(CN)_3} \downarrow  \longrightarrow {K_3}[Fe{(CN)_6}]\)

1 for coloured ppt./Black ppt.
2 for coloured solution.
3 for clear/colourless solution
4 for white ppt.
Redox Reactions

18643 \({H_2}{O_2}\) reduces \(Mn{O_4}^ - \)ion to

1 \(M{n^ + }\)
2 \(M{n^{2 + }}\)
3 \(M{n^{3 + }}\)
4 \(M{n^ - }\)
Redox Reactions

18644 When a sulphur atom becomes a sulphide ion

1 There is no change in the composition of atom
2 It gains two electrons
3 The mass number changes
4 None of these
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Redox Reactions

18693 Which of these substances is a good reducing agent

1 \(NaOCl\)
2 \(HI\)
3 \(FeC{l_3}\)
4 \(KBr\)
Redox Reactions

19227 Assign \(A, B, C, D\) from given type of reaction.

\(3KCN + Fe{(CN)_3} \downarrow  \longrightarrow {K_3}[Fe{(CN)_6}]\)

1 for coloured ppt./Black ppt.
2 for coloured solution.
3 for clear/colourless solution
4 for white ppt.
Redox Reactions

18643 \({H_2}{O_2}\) reduces \(Mn{O_4}^ - \)ion to

1 \(M{n^ + }\)
2 \(M{n^{2 + }}\)
3 \(M{n^{3 + }}\)
4 \(M{n^ - }\)
Redox Reactions

18644 When a sulphur atom becomes a sulphide ion

1 There is no change in the composition of atom
2 It gains two electrons
3 The mass number changes
4 None of these
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