Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Redox Reactions

Short Answer Type

51.

What does positive electrode potential imply?

117 Views

52.

Why is it not possible to measure the single electrode potential?

193 Views

53.

What is electrochemical series?

161 Views

54. Copper does not dissolve in H₂SO₄. Why?

99 Views

55.

The standard electrode potentials of elements A, B and C are + 0.68, -2 .50 and -0.50 V respectively. Write the correct order of their reducing power.

117 Views

56.

The E° of Cu²⁺ | Cu is + 0 . 34 V. What does it signify?

110 Views

57.
What is the equivalent mass of the oxidation agent in the reaction

$SO subscript 2 plus space 2 straight H subscript 2 straight O space space rightwards arrow space space space 3 straight S space plus space 2 straight H subscript 2 straight O$

In this reaction, SO₂ oxidises H₂S, therefore, SO₂ acts as oxidising agent. During oxidation, four electrons are lost i.e.

102 Views

58.

In the standardisation of Na₂S₂O₃using K₂Cr₂O₇ by iodometry, calculate the equivalent mass of K₂Cr₂O₇?

577 Views

Long Answer Type

59. Explain oxidation and reduction according to electronic concept. Give examples.

450 Views

60.

Define oxidising agents and reducing agents in terms of electronic concept ?

252 Views