When water boilers are used for long period of time, the solid substances left behind as scale are

25cm\(^3\) of a mixture of noble gases was obtained from air after the removal of other constituents. What was the original volume of air?

The solubility curve shows the variation of solute concentration with

The air around smelting industries is likely to contain

Kerosene is commonly used to remove the red colour stain of palm oil from cloths because it