MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Reactivity Series

Why we use a ...

Question

Why we use a platinum iridium alloy in making prototype meter and kilogram?

Open in App

Solution

The $10 %$ iridium $90 %$ platinum alloy was chosen in making prototype metre and kilogram because of its high density, corrosion resistance and stability.

Suggest Corrections

thumbs-up

0

Similar questions

Q. There are two alloys of gold, silver and platinum. The first alloy is known to contain 40 percent of platinum and the second alloy 26 percent of silver. The percentage of gold is the same in both alloys. Having alloyed 150 kg of the first alloy and 250 kg of the second, we get a new alloy that contains 30 percent of gold. How many kilograms of platinum is there in the new alloy?

Platinum, palladium and iridium are called noble metals because:

Q. There are two alloys of platinum, silver and gold. The first alloy is known to contain

40

per cent of platinum and the silver alloy

26

per cent of copper. The percentage of gold is the same in both alloys. Having alloyed

150

kg of the first alloy and

250

kg of the second, we get a new alloy which contains

30

per cent of gold. How many kg of platinum are there in the new alloy?

Q. Why we use rheostat in Meter bridge?

Q. Why are alloys used for making standard resistance coils?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Chemical Properties

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Reactivity Series

Standard VIII Chemistry

Join BYJU'S Learning Program

CrossIcon