Electrochemistry questions
1808 published questions with worked solutions.
- The metal used in storage batteries is:
- Coating of zinc on iron objects is commonly known as:
- The phenomenon of removing layers of basic oxides from metals before electroplating is called:
- Passivity of iron is due to the formation of thin film of….on its surface.
- Electrolysis of fused carnallite gives:
- When a lead storage battery is discharged:
- The acid used in a lead storage battery is:
- Gaseous HCl is a poor conductor of electricity, while its aqueous solution is a good conductor. This is because:
- Which element is extracted commercially by the electrolysis of an aqueous solution of one of its compounds?
- When metallic copper comes in contact with moisture, a green powder/pasty coating can be seen over it. This is chemically known as
- The most convenient method to protect bottom of ship made of iron is
- Based on the following equilibria: Fe^ 2+ Fe^ 3+ +e^-; E^ =-0.771 V [Fe(CN)_6]^ 4- [Fe(CN)_6]^ 3- +e^-; E^ =-0.36 V Select the...
- For electroplating of gold the electrolyte used is:
- Various methods have been employed for protecting iron from rusting. Which of the following is incorrect?
- Zn cannot displace the following ions from their aqueous solutions:
- Which of the following is coated over iron articles to protect iron from corrosion?
- Rusting of iron in moist air involves:
- Steel that is resistant to acids is:
- Which metal is used in making cathode containers of dry cell?
- Iron sheets are galvanized mainly to:
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