Home
Class 12
CHEMISTRY
Assertion : Desilverisation of lead is d...

Assertion : Desilverisation of lead is done by Parke's method `DeltaG`.
Reason : When lead-silver alloy is poor in silver, zinc is added to molten ore.

A

Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.

B

Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.

C

Assertion is correct, but reason is wrong statement.

D

Assertion is wrong, but reason is correct statement.

Text Solution

Verified by Experts

The correct Answer is:
B
Correct explanation : Silver is nearly 300 times more soluble in molten zinc than in molten lead. Therefore, it gets easily separated from molten lead.
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    DINESH PUBLICATION|Exercise Matrix- Match Type Questions|3 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    DINESH PUBLICATION|Exercise Brain Storming Multiple Chocie Questions|7 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    DINESH PUBLICATION|Exercise Comprehension Linked|3 Videos

  • ETHERS

    DINESH PUBLICATION|Exercise (MCQs)|8 Videos

  • HALOALKANES AND HALOARENES

    DINESH PUBLICATION|Exercise Brain storming multiple choice questions|11 Videos

Similar Questions

Explore conceptually related problems

Assertion : Gold and silver are extracted from their native ores by leaching. Reason : Both silver and gold particles dissolve in dilute solution of sodium cyanide in presence of oxygen.

Assertion : Lead, tin and bismuth are purified by liquation method. Reason : Lead, tin and bismuth have low m.p. as compared to impurities.

Assertion : Silver and gold are extracted from their ores by the process of leaching with dilute NaCN. Reason : Impurities associated with these ores dissolve in NaCN.

Assertion:When a copper wire is dipped in silver nitrate solution, there is no change in the colour of the solution. Reason : Copper cannot displace silver from its salt solution.

Assertion (A) : Silver nitrite gives nitro alkene when it reacts with an alkyl halide. Reason (R ) : Silver nitrite is an ionic compound.

Assertion: Sulphide ores of Zn and Pb are generally converted into their respective oxides, prior to reduction. Reason: The zinc oxide and lead oxide are reduced by carbon to their respective free metals.