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Question

When a vessel made up of ‘Z’ is exposed to air for long, it acquires a dull green coating. Similarly when a vessel made up of ‘W’ is exposed to moist air for long it acquires a brown coloured coating.

Now, consider the following reactions.

ZSO4 + M → A colourless solution of ‘MSO4’ + Z

ZSO4 + W → A green coloured solution of ‘WSO4’ + Z

M, W and Z respectively can be

जब ‘Z’ से बने एक पात्र को लम्बे समय तक वायु में खुला रखा जाता है, तो उस पर एक हल्के हरे रंग की परत जम जाती है। इसी प्रकार, जब ‘W’ से बने पात्र को लम्बे समय तक नम वायु में खुला रखा जाता है, तो उस पर भूरे रंग की परत जम जाती है।

अब, निम्नलिखित अभिक्रियाओं पर विचार कीजिए।

ZSO4 + M → ‘MSO4’ का रंगहीन विलयन + Z

ZSO4 + W → ‘WSO4’ का हरे रंग का विलयन + Z

M, W तथा Z क्रमशः हो सकते हैं

A
Zn, Cu and Fe

Zn, Cu तथा Fe
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B
Zn, Fe and Cu

Zn, Fe तथा Cu
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C
Fe, Zn and Cu

Fe, Zn तथा Cu
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D
Cu, Zn and Fe

Cu, Zn तथा Fe
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Solution

The correct option is B Zn, Fe and Cu

Zn, Fe तथा Cu
Solution

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