Class 12

19. General principles and processes of isolation of elements question bank (Chemistry)

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Q1.

Which of the following elements is found in native state?

(A)
$Al$
(B)
$Au$
(C)
$Cu$
(D)
$Na$
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Q2.

Pyrolusite is

(A)
Carbonate ore
(B)
Sulphur ore
(C)
Silicon ore
(D)
None of these
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