What would you observe in the following case?

When carbon monoxide is passed over heated copper oxide.

Colourless, odourless gas evolved leaving behind a reddish brown coloured residue

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Reddish brown gas evolved leaving behind a reddish brown coloured residue

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Colourless, odourless gas evolved leaving behind a blue coloured residue

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Reddish brown gas evolved leaving behind a blue coloured residue

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Solution

The correct option is A
Colourless, odourless gas evolved leaving behind a reddish brown coloured residue

Colourless, odourless gas evolved leaving behind a reddish brown coloured residue

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Similar questions

Q. The colour of residue left behind on heating lead nitrate when it is still hot is :
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and then suffocating gas is evolved and a red residue is left behind. Answer the following:
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What would you observe in the following case? When carbon monoxide is passed over heated copper oxide.

The correct option is A Colourless, odourless gas evolved leaving behind a reddish brown coloured residue Colourless, odourless gas evolved leaving behind a reddish brown coloured residue

What would you observe in the following case?

When carbon monoxide is passed over heated copper oxide.

The correct option is A
Colourless, odourless gas evolved leaving behind a reddish brown coloured residue

Colourless, odourless gas evolved leaving behind a reddish brown coloured residue