Question

1) In a redox titration of Fe2+ against Ce+4 ions, before equivalence point, when [Fe2+] = [Fe3+], Then Cell emf V = ----
1.Ve
2.2Ve
3. 1/2 Ve
4. V + Ve

2) In this Redox titration, the equivalence-point voltage is independent of the -----
1. concentrations and volumes of reactants
2. standard potentials of both redox systems
3. Both of the above
4. none of the above

3) For titrations of two substances by same titrant, it is necessary that standard redox potentials of two substances and their products must differ by -----
1. 0.5 V
2. 0.2 V
3. not more than 0.2 V
4. not less than 0.6 V

4) In Redox titrations, asymmetric titration curve is obtained when reaction stoichiometry is ----
1. 1:1
2. 2:1
3. 2:2
4. not 2:1

5) The ideal Redox indicator would be one with standard redox potential -------- analyte and titrant.
1. greater
2. smaller
3. in between
4. none of the above

6) For titration of Iron with acidified Potassium dichromate, ------ is used as an indicator
1. Ferroin
2. Bromocresol green
3. Xylenol orange
4. Diphenyl amine

7) KMnO4 solution acts as a ------- in moderate alkaline solution.
1. strong oxidising agent
2. weak oxidising agent
3. moderately strong oxidising agent
4. strong reducing agent

8) KMnO4 solution is standardized with
1. sodium oxalate
2. Potassium dichromate
3. Sodium thiosulpahte
4. EDTA

9) For determination of Chemical Oxygen Demand (COD) of industrial effluent, -------solution is used as a titrant
1. KMnO4
2. Iodine
3. Ceric Ammonium sulphate
4. K2Cr2O7

10) Direct titration with Standard solution of Iodine is referred as ------- titration
1. Iodometric
2. iodine
3. iodimetric
4. iodination​

Answer 1

Answer:

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