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InterviewSolution
| 1. |
Three naturally occurring elements X,Y and Z are good conductors of electricity and are very precious. Z is more reactive than X and Y and on exposure to air for a long time turns black. Z forms an alloy with Y and is used in jewellery and X is used as a catalyst. Identify X , Y and Z. |
| Answer» Three precious elements that occur nature are silver, gold and platinum. Silver is more reactive than gold and platinum is used as a catalyst. Alloy of gold with silver is used in jewellery. So X is platinum, Y is gold and Z si silver. | |