Which of the following metals cannot be obtained from their compounds by heating with carbon?

Sodium (Na)

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Potassium (K)

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Zinc (Zn)

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Both (A) & (B)

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Solution

The correct option is D Both (A) & (B)
The metals high up in the reactivity (Na, Mg, Ca, Al) series are very reactive. They cannot be obtained from their compounds by heating with carbon. This is because their metals have more affinity for oxygen than do for carbon.

These metals are thus obtained by electrolytic reduction.

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Similar questions

Which of the following metals can be obtained from haematite ore?
(a) copper (b) sodium (c) zinc (d) iron

Q. Which of the following metals cannot be obtained from their compounds by heating with carbon?

The metals like Na, K, Ca, Al cannot be obtained from their compounds by heating with carbon because their metals have more affinity for oxygen than carbon.

Q. State True or False:
Metals like Na, K, Ca, Al cannot be obtained from their compounds by heating with carbon because their metals have a higher affinity for oxygen than they do for carbon.

Q. The set in which all the metals are obtained by heating their compounds/ores in air is:

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