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NDA & NA EE

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The oxidation number of sulphur in perdisulphuric acid is:

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Important Questions on Redox Reactions

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NDA & NA EE

IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 7 - Redox Reactions>Exercise 1>Q 15

Which of the following statement(s) is/are false for electrolytic cell?

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NDA & NA EE

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Chemistry Crash Course NDA & NA EE>Chapter 7 - Redox Reactions>Exercise 1>Q 17

Silverware turns black after some time due to _____.

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NDA & NA EE

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Chemistry Crash Course NDA & NA EE>Chapter 7 - Redox Reactions>Exercise 1>Q 18

Which of the following causes the rusting of iron?
I. Oxidation

II. Reduction
III. Chemical reaction with oxygen.
IV. Chemical reaction with ${CO}_{2}$ .
Select the correct answer from the codes given below.

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NDA & NA EE

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Chemistry Crash Course NDA & NA EE>Chapter 7 - Redox Reactions>Exercise 1>Q 19

Match the terms of Column $I$ and Column $II$ and choose the correct option from the codes given below.

	Column $I$		Column $II$
A.	Leclanche cell	1.	Cell reaction $2 H_{2} + O_{2} \to 2 H_{2} O$
B.	$Ni - Cd$ cell	2.	Does not involve any ion in solution and is used in hearing aids.
C.	Fuel cell	3.	Rechargeable
D.	Mercury cell	4.	Reaction at anode $Zn \to {Zn}^{2 +} + 2 e^{-}$
		5.	Converts energy of combustion into electrical energy

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NDA & NA EE

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Chemistry Crash Course NDA & NA EE>Chapter 7 - Redox Reactions>Exercise 1>Q 20

Match List $I$ and List $II$ and select the correct answer by using the codes given below the lists.

	List $I$ (The atom for which the oxidation state is to the found)		List $II$ (Oxidation state)
A.	Oxygen in ${BaO}_{2}$	1.	$- 1$
B.	Sulphur in $S_{2} O_{6}^{2 -}$	2.	$0$
C.	Carbon in $C_{12} H_{22} O_{11}$	3.	$+ 7$
D.	Manganese in ${MnO}_{4}^{-}$	4.	$- 2$
		5.	+ $5$

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NDA & NA EE

IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 7 - Redox Reactions>Exercise 1>Q 23

Statement $I$ : When hydrogen gas is passed over heated metallic oxide, it removes the oxygen from it.

Statement $II$ : Hydrogen is an oxidising agent.

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NDA & NA EE

IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 7 - Redox Reactions>Exercise 1>Q 24

Which one of the following is a reduction reaction?

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NDA & NA EE

IMPORTANT

Chemistry Crash Course NDA & NA EE>Chapter 7 - Redox Reactions>Exercise 1>Q 25

The equivalent weight of a metal is

29.4 gram

It forms metal sulphate isomorphous with epsom salt. The atomic weight of the metal is:

The oxidation number of sulphur in perdisulphuric acid is:

Important Questions on Redox Reactions

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