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Chemistry Match the following.

PART - 2 CH - 7 Redox Reactions · Rajasthan Board (RBSE) STD 11 Science (Rajasthan - English Medium). 8 questions.

Questions

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8 questions · self-marked practice — reveal the answer and mark yourself.

Question 14 Marks
Match column A and column B and choose the right code :
Column AColumn B
1. On Ag electrode, the electrolysis of aqueous solution of $AgNO _3$(a) $K _2 Cr _2 O _7$
2. $Cr < Mg < K$(b) $CHCl _3$
3. Different mathmetical value of valency and oxidation number of carbon(c) Reducing capacity
4. Oxidizing property(d) On cathode Ag and on anode $Ag ^{+}$
Answer
(1) (d), (2) (c), (3) (b), (4) (a).
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Question 24 Marks
Match column A and column B and choose the right code :
Column AColumn B
1. Strongest reductant metal(a) $HgCl _2$
2. Metal which react with dilute acid(b) Lithium (Li)
3. Elements which shows only negative oxidation state(c) Mg
4. Mercury (II) chloride(d) Fluorine
Answer
(1) (b), (2) (c), (3) (d), (4) (a).
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Question 34 Marks
Match column A and column B and choose the right code :
Column AColumn B
1. Oxidation number of S in $H _2 SO _5$.(a) Always integer
2. Bleaching powder(b) Equivalent weight $=$ Molecular weight
3. In $FeSO _4 \cdot 7 H _2 O$(c) $CaOCl _2$
4. Valency(d) $+6$
Answer
(1) (d), (2) (c), (3) (b), (4) (a)
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Question 44 Marks
Match column A and column B and choose the right code :
Column AColumn B
1. Oxidation number of carbon in graphite(a) $-2$ to $+6$
2. $Zn > Cu > Ag$(b) $-1$
3. Oxidation number of hydrogen in hydrides(c) Electrochemical series
4. Oxidation number of sulphur(d) Zero
Answer
(1) (d), (2) (c), (3) (b), (4) (a).
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Question 54 Marks
Match column A and column B and choose the right code :
Column AColumn B
1. Removal of electron from any substance(a) Reduction
2. $\begin{array}{l}2 Na ( s )+ H _2(g) \longrightarrow 2 NaH ( s )\end{array}$(b) Both oxidant and reductant
3. Conversion of mercuric chloride to mercurous chloride.(c) Reduction of $H _2$
4. $H _2 O _2$(d) Oxidation
Answer
(1) (d), (2) (c), (3) (a), (4) (b).
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Question 64 Marks
Match column A and column B and choose the right code :
Column AColumn B
1. $S _2 O _3{ }^{2-}$(a) $-\frac{1}{3}$
2. Maximum oxidation number of chlorine(b) $+2$
3. Oxidation number of N in $N _3 H$.(c) Oxidation number of $S$ is -2 .
4. Oxidation number of oxygen in $OF _2$(d) $+6$
Answer
(1) (b), (2) (d), (3) (a), (4) (b).
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Question 74 Marks
Match column A and column B and choose the right code :
Column AColumn B
1. $Cr _2 O _{7( aq )}^{2-} \longrightarrow Cr _{( aq )}^{+3}$(a) Reduction
2. $2 Br _{2(l)} \longrightarrow 4 Br _{( aq )}^{-}$(b) Oxidation
3. $CuSO _4$(c) Reduction
4. $Na _2 S_2 O _3$(d) Reducing agent
Answer
(1) (c), (2) (a), (3) (b), (4) (d).
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Question 84 Marks
Match column A and column B and choose the right code :
Column AColumn B
1. Addition reaction(a) $\begin{array}{c} Ca ( s )+2 H _2 O ( l ) \longrightarrow  Ca ( OH )_2( aq )+ H _2(g)\end{array}$
2. Decomposition reaction(b) $C ( s )+ O _2(g) \longrightarrow CO _2(g)$
3. Displacement reaction(c) $\begin{array}{r}2 H _2 O (l) \longrightarrow 2 H _2(g)+ O _2(g)\end{array}$
4. Disproportionation reaction(d) $\begin{aligned} 2 H _2 O _2( aq ) \longrightarrow & 2 H _2 O ( l ) & + O _2(g)\end{aligned}$
Answer
(1) (b), (2) (c), (3) (a), (4).(d)
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