MCQs 1 on Chapter 8(Redox Reactions) 11th Class

These are MCQs of Chapter 1 (Basic Concepts of Chemistry) for 11th Class. Practice MCQs to check your knowledge for Entrance examination like CBSE NEET etc

1. Oxidation is a process of

• Loss of electron
• Gain of electron
• Increase in the negative valency
• Decrease in positive valency

2. When Zinc metal is added to dilute H₂SO₄ solution, hydrogen is evolved. In this zinc undergoes

• Reduction
• Oxidation
• Dissolves
• None of the above

3. Carbon has zero oxidation number in

• CH₄
• CH₃Cl
• CCl₄
• CH₂Cl₂

4. Chlorine is in +3 oxidation state in

• HCl
• HClO₄
• ICl
• ClF₃

5. The most common oxidaton state of an element is -2. The number of electrons present in the outermost shell is

• 2
• 4
• 6
• 8

6. The Oxidation number of P in (HP₂O₇)^-

• +5
• +6
• +7
• +3

7. The Oxidation number of Mn is +7 in

• Manganese Dioxide
• Manganese Chloride
• Manganese Sulphate
• potassium permanganate

8. The Oxidation number of Cr in CrO₃ is

• +3
• +5
• +6
• 0

9. In the conversion of K₂Cr₂O₇ to K₂Cr₂O₄, the oxidatoin number of chromium

• Remains same
• Increases
• Decrease
• None

10. Oxidation number of silver in silver amalgam is

• +1
• zero
• -1
• None of These

MCQs 1 on Chapter 8(Redox Reactions)=>

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