MCQ Questions for Class 11 Chemistry Chapter 8 Redox Reactions with Answers

Redox Reactions Class 11 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 8 Redox Reactions with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided Redox Reactions Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 11 Chemistry Chapter 8 Quiz

Class 11 Chemistry Chapter 8 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Chemistry Chapter 8 Redox Reactions to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Redox Reactions Class 11 Chemistry MCQ online test

Q1.	KMnO4 reacts with oxalic acid according to the equation 2MnO₄^– + 5C₂O₄^2- + 16H+ → 2Mn²⁺ + 10CO₂ + 8H₂O Here 20 mL of 0.1 M KMnO₄ is equivalent to
	A.50 mL of 0.5 M C₂H₂O₄
	B.20 mL of 0.1 M C₂H₂O₄
	C.20 mL of 0.5 M C₂H₂O₄
	D.50 mL of 0.1 M C₂H₂O₄

Ans: 50 mL of 0.1 MC₂H₂O₄

Q2.	Which of the following is a redox reaction?
	A.NaCl + KNO₃ → NaNO₃ + KCl
	B.Mg(OH)₂ + 2NH₄Cl → MgCl₂ + 2NH₄OH
	C.CaC₂O₄ + 2HCl → CaCl₂ + H₂C₂O₄
	D.2Zn + 2AgCN → 2Ag + Zn(CN)₂

Ans: 2Zn + 2AgCN → 2Ag + Zn(CN)₂

Q3.	The reduction potential values of M, N and O are +2.46 V, -1.13 V, -3.13 V respectively. Which of the following orders is correct regarding their reducing property?
	A.O > N > M
	B.M > O > N
	C.M > N > O
	D.O > M > N

Ans: O > M > N

Q4.	Which of the following processes does not involve either oxidation or reduction?
	A.Formation of slaked lime from quick lime
	B.Heating Mercuric Oxide
	C.Formation of Manganese Chloride from Manganese oxide
	D.Formation of Zinc from Zinc blende

Ans: Formation of slaked lime from quick lime

Q5.	The number of moles of KMnO₄ reduced by one mole of KI in alkaline medium is
	A.One
	B.Two
	C.Five
	D.One fifth.

Ans: Two

Q6.	What is known as Autooxidation?
	A.Formation of H₂O by the oxidation of H₂O₂.
	B.Formation of H₂O₂ by the oxidation of H₂O.
	C.Both (1) and (2) are true
	D.None of the above

Ans: Formation of H₂O₂ by the oxidation of H₂O.

Q7.	Which of the following statements regarding sulphur is incorrect ?
	A.S₂ molecule is paramagnetic.
	B.The vapour at 200° C consists mostly of S₈ rings.
	C.At 600°C the gas mainly consists of S₂ molecules.
	D.The oxidation state of sulphur is never less than +4 in its compounds.

Ans: The oxidation state of sulphur is never less than +4 in its compounds.

Q8.	The oxidation number of Xe in BaXeO₆ is
	A.8
	B.6
	C.4
	D.10

Ans: 10

Q9.	CrO₅ has structure as shown, The oxidation number of chromium in the compound is?
	A.10
	B.6
	C.4
	D.5

Ans: 6

Q10.	Pure water is bad conductor of electricity because
	A.It has high boiling point
	B.It is almost unionised
	C.Its molecules are associated with H- bonds
	D.Its pH is 7 at 25°C

Ans: It is almost unionised

Q11.	The oxidation process involves
	A.Increase in oxidation number
	B.Decrease in oxidation number
	C.No change in oxidation number
	D.none of the above

Ans: Increase in oxidation number

Q12.	The ionic mobility of alkali metal ions in aqueous solution is maximum for
	A.Li⁺
	B.Na⁺
	C.K⁺
	D.Rb⁺

Ans: Rb⁺

Q13.	Pure water is bad conductor of electricity because
	A.It has high boiling point
	B.It is almost unionised
	C.Its molecules are associated with H- bonds
	D.Its pH is 7 at 25°C

Ans: It is almost unionised

Q14.	The oxidation number of Fe in K₄ [Fe (CN)₆] is
	A.3
	B.4
	C.2
	D.Zero

Ans: 2

Q15.	A standard hydrogen electrode has zero electrode potential because
	A.Hydrogen is easiest to oxidise
	B.This electrode potential is assumed to be zero
	C.Hydrogen atom has only one electron
	D.Hydrogen is the lightest element

Ans: This electrode potential is assumed to be zero

Q16.	Burning of lime to give calcium oxide and carbon dioxide is
	A.An Oxidation Process
	B.A Reduction Process
	C.Disproportionation
	D.Decomposition.

Ans: Decomposition.

Q17.	The colourless solution of silver nitrate slowly turns blue on adding copper chips to it because of
	A.Dissolution of Copper
	B.Oxidation of Ag⁺ → Ag
	C.Reduction of Cu²⁺ ions
	D.Oxidation of Cu atoms.

Ans: Oxidation of Cu atoms.

Q18.	The oxidation number of carbon in CH₂ Cl₂ is
	A.0
	B.2
	C.3
	D.5

Ans: 0

Q19.	The oxidation state of I in IPO₄ is
	A.1
	B.3
	C.5
	D.7

Ans: 3

Q20.	The relationship between electrode potentials and concentrations of the substances involved in half cell reaction is given by
	A.Habers process
	B.Hess Law
	C.Nernst Equation
	D.None of the Above