A block of iron sinks in fluid A but floats in fluid B, this is because fluid A is than fluid B.
A
more denser
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B
less denser
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C
more viscous
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Solution
The correct option is B less denser Since we know that the sinking and floating of a body in a liquid is due to the diffrence in their densities. If the density of the body is greater than the liquid then it sinks and vice-versa. So density of fluid B must be greater than iron and also greater than fluid A.