A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will be:

zinc granules have no regular shape

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zinc granules are silvery grey coloured

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colour of zinc granules changed to brownish black

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C u S O_{4}

change into

Z n S O_{4}

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Solution

The correct options are
A zinc granules have no regular shape
B colour of zinc granules changed to brownish black
C zinc granules are silvery grey coloured
D $C u S O_{4}$ change into $Z n S O_{4}$
A student added zinc granules to copper sulphate solution taken in a test tube. The correct observations made by the student will be:
(A) zinc granules have no regular shape.
(B) zinc granules are silvery-grey colored.
(C) colour of zinc granules changed to brownish-black due to chemical change.
(D) $C u S O_{4}$ change into $Z n S O_{4}$ due to the following chemical change.
$C u S O_{4} + Z n \to Z n S O_{4} + C u ↓$

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