Question

Assertion (A) : On passing

\mathrm{H}_2

gas into aqueous

\mathrm{Fe}^{3+}

solution, resulting solution gives test of

\mathrm{Fe}^{3+}

.

Reason (R):

\mathrm{H}_2(g)

reduces

\mathrm{Fe}^{3+}

to

\mathrm{Fe}^{2+}

but

\mathrm{Fe}^{2+}

is oxidised to

\mathrm{Fe}^{3+}

by atmospheric oxygen.

Accepted Answer

$\mathbf{A}$ is true but $\mathbf{R}$ is false.

Answer

Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$.

Answer

Both $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is not the correct explanation of $A$.

Answer

$\mathbf{A}$ is false but $\mathbf{R}$ is true.

JEE CHEMISTRY MCQ: HYDROGEN

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