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.

Electrochemistry

Multiple Choice Questions

221. The standard reduction potential values of the three metallic cations, X, Y, Z are 0.52, – 3.03 and - 1.18 V respectively. The order of reducing power of the correspor ding metals is

Y > Z > X
X > Y > Z
Z > Y > X
Z > X > Y

139 Views

Short Answer Type

222. How is cell constant related to specific conductance of electrolyte?

396 Views

223. Can we store aqueous copper sulphate solution in iron vessel?

211 Views

224. Which type of electrolytes are used in salt bridge?

459 Views

225. For a half-cell reaction: C₆H₅NO₂ → C₆H₅NH₂. What is the value of n in Nernst equation of electrode potential?

163 Views

226. What is the sign for

∆

G for a spontaneous cell reaction?

118 Views

227. How can the standard oxidation potential of an electrode be raised up?

147 Views

228. How does free energy change related to emf of cell?

147 Views

229. What is the effect of decreasing concentration on the molar conductivity of weak electrolyte?

127 Views

230.
Fluorine cannot be prepared from fluorides by chemical oxidation.

Fluorine is the strongest oxidizing agent as it has highest E⁰ value. Therefore fluorine has the highest tendency to get reduced to F^-. As a result, F^- ion has the least tendency to get oxidized, hence fluorine cannot be prepared by chemical oxidation of fluorides.

374 Views