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The electroplating with chromium is unde...

The electroplating with chromium is undertaken because :

A

Electrolysis of chromium is easier

B

Chromium can from alloys with other metals

C

Chromium gives a protective and decorative coating to the base metal

D

Of high reactivity of chromium metal

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Verified by Experts

The correct Answer is:
C
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MBD PUBLICATION-ELECTROCHEMISTRY-QUESTION BANK
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  2. Which reaction does not takes place at cathode ?

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  3. The electroplating with chromium is undertaken because :

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  4. For a given cell reaction , Cr +3H2O +OCI^- rarrCr^(3+)+3CI^- 6OH^-, ...

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  5. Molten NaOH conducts electricity , becauseNaOH is :

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  6. The standard reduction potentials of the metals A,B and C are 0.68, -2...

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  7. If the half cell reaction A +e rarr A^- has a large negative reduction...

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  8. Pure water does not conduct electricity because it is :

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  9. An aqueous solution of an electrolyte:

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  10. Which porcess involves corrosion ?

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  11. The metal that cannot be obtained by electrolysis of the aqueous of it...

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  12. Water is a non-electrolyte but conducts electricity on dissolving a sm...

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  13. Rust is a mixture of :

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  14. In a salt bridge,KCI is used because:

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  15. A solution containing one mole per litre each of Cu(NO3)2, AgNO3, Hg2(...

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  16. In a galvanic cell energy changes occurs as:

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  17. AtpH=2,E("Quinhydrone")^@ =1.30V,E("Quinhydrone") will be:

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  18. The passage of electricity in the Daniell cell when Zn and Cu electrod...

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  19. A correct electrochemical series can be obtained from K,Ca,Na,Al,Mg,Zn...

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  20. Indicator electrode is :

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