A mixture of methanol vapour and air is passed over heated copper. The products are:

C O + H_{2}

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H C H O + H_{2}

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H C O O H

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C O + H_{2} O

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Solution

The correct option is B $H C H O + H_{2}$
In presence of copper and air, methanol is oxidized to form formaldehyde and hydrogen.

$C H_{3} O H a i r - \to C u H C H O + H_{2}$

Option B is correct.

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A mixture of methanol vapour and air is passed over heated copper. The products are:

The correct option is B HCHO+H2In presence of copper and air, methanol is oxidized to form formaldehyde and hydrogen. CH3OHair−→CuHCHO+H2Option B is correct.

The correct option is B $H C H O + H_{2}$
In presence of copper and air, methanol is oxidized to form formaldehyde and hydrogen.

$C H_{3} O H a i r - \to C u H C H O + H_{2}$

Option B is correct.