Hydrogen gas will not reduce

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p-Block Elements - I

easy

Hydrogen gas will not reduce

Heated cupric oxide

Heated ferric oxide

Heated stannic oxide

Heated aluminium oxide

(IIT-1984)

Solution

Aluminium oxide cannot be reduced by hydrogen even under very hot conditions because $Al$ is more reactive than $H$. While other oxides can be reduced by hydrogen as they are below hydrogen in the metal reactivity series.

Standard 11

Chemistry

In which of the following, a salt of the type $KMO_2$ is obtained?

easy

In some of the reactions thallium resembles aluminium, whereas in others it resembles with group $1$ metals. Support this statement by giving some evidences.

easy

Which of the following does not exist in free form

medium

Aluminium vessels should not be washed with materials containing washing soda since

medium

In the purification of bauxite by Hall's process

medium

Hydrogen gas will not reduce

Solution

Similar Questions

In which of the following, a salt of the type $KMO_2$ is obtained?

In some of the reactions thallium resembles aluminium, whereas in others it resembles with group $1$ metals. Support this statement by giving some evidences.

Which of the following does not exist in free form

Aluminium vessels should not be washed with materials containing washing soda since

In the purification of bauxite by Hall's process

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