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CBSE Notes 2011-2012

The following question consists of an Assertion(A) and a Reason (R). A : Zinc is essential element f...

Multiple choice question

The following question consists of an Assertion(A)
and a Reason (R).
A : Zinc is essential element for life and Cadmium
is extremely toxic. Although both belong to
same group in periodic table.
R : Zinc is useful as it is integral part of most of
the enzymes. Cadmium is present in cigarette
smoke, it accumulates in kidney and causes its
malfunctioning. It replaces some of zinc in
enzymes and thus prevents them from working.

unknown

If 'A' and 'R' are true and 'R' is correct
explanation of 'A'

unknown

If 'A' and 'R' are true but 'R' is not correct
explanation of 'A'

unknown

If'A' is true but 'R' is false

unknown

If both 'A' and 'R' are false