Raney nickel used as a catalyst in hydrogen is obtained by

Options

A. heating nickel tetracarbonyl
B. griding solid nickel
C. treating nickel-aluminum alloy with dilute `NaOH`
D. treating nickel-aluminium alloy with dillute `HCl`

Answer

C

Explanation

An alloy containing equal amounts of `Ni` and `Al` is digested with sodium hydroxide. The `Al` is dissolved away and the residual very finely divided `Ni` is washed and stored under water, ethanol or any other suitable liquid.