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Which of the following sulphides when heated strongly in air

Question

Which of the following sulphides when heated strongly in air gives the corresponding metal without undergoing separate reduction of oxide?

A

C u_{2} S

B

F e S

C

H g S

D

Z n S

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Text solutionVerified

2 C u_{2} S + 3 O_{2} ⟶ 2 C u_{2} O + 2 S O_{2}

2 Z n S + 3 O_{2} ⟶ 2 Z n O + 2 S O_{2}

2 P b S + 3 O_{2} ⟶ 2 P b O + 2 S O_{2}

2 H g S + 3 O_{2} ⟶ 2 H g O + 2 S O_{2}

F e S + O_{2} ⟶ F e + S O_{2}

F e S

when heated directly in air gives

F e

.

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Question Text	Which of the following sulphides when heated strongly in air gives the corresponding metal without undergoing separate reduction of oxide?
Answer Type	Text solution:1
Upvotes	150