a H 2 O 2 + O 3 → H 2 O + 2 O 2 b H 2 O 2 + A g 2 O → 2 A g + H 2 O + O 2 Role of hydrogen peroxide in the above reactions is respectively:

Oxidising agent in a and reducing in b

Reducing agent in a and oxidising agent in b

Hot concentrated sulphuric acid is a moderately strong oxidizing agent. Which of the following reactions does not show oxidizing behaviour?

CaF 2 + H 2 SO 4 → CaSO 4 + 2 HF

Cu + 2 H 2 SO 4 → CuSO 4 + SO 2 + 2 H 2 O

3 S + 2 H 2 SO 4 → 3 SO 2 + 2 H 2 O

C + 2 H 2 SO 4 → CO 2 + 2 SO 2 + 2 H 2 O

E M B I B E

Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 1>Q 64

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Earn 100

Strongest reducing agent is

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Important Questions on Redox Reactions

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Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 1>Q 65

The oxidation state of sulphur in the anions

{SO}_{3}^{2 -}, S_{2} O_{4}^{2 -}

and

S_{2} O_{6}^{2 -}

follow the order

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Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 1>Q 66

Match List-I (Compounds) with List-II (Oxidation states of Nitrogen) and select answer using the codes given below the list:

	List-l		List-II
(1)	${NaN}_{3}$	(1)	$+ 5$
(2)	$N_{2} H_{2}$	(2)	$+ 2$
(3)	$NO$	(3)	$- 1 / 3$
(4)	$N_{2} O_{5}$	(4)	$- 1$

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Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 2>Q 3

Which of the following is not correctly matched with respect to the oxidation state of phosphorus atoms?

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Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 2>Q 4

Which of the following reactions represents the reducing behaviour of

{SO}_{2}

?

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Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 2>Q 5

1

mole of

N_{2} H_{4}

loses 10 moles of electrons to form a new compound

Y

. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in

Y

? (There is no change in the oxidation state of hydrogen).

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Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 2>Q 6

The average oxidation state of

Fe

in

{Fe}_{3} O_{4}

is:

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Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 2>Q 7

How many electrons required to balance the following equation?

{NO}_{3}^{-} + 4 H^{+} + e^{-} ⟶ 2 H_{2} O + NO

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Alpha Question Bank for Medical: Chemistry>Chapter 6 - Redox Reactions>Exercise 2>Q 8

Which of the following acts as an oxidising as well as reducing agent?

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