If relative density of a substance in $0.8$ , is it heavier or lighter than water?

Lighter

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Heavier

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Of equal weight

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None of these

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Solution

The correct option is A Lighter
The relative density of a substance is a characteristic property of the substance that remains the same under specific conditions. The relative density of water is 1. If a substance has a relative density that is greater than 1, it will sink in water and if its relative density is less than 1, it will float in water.
In this case, the relative density of a substance is 0.8. Hence, the substance float in water.

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If relative density of a substance in 0.8, is it heavier or lighter than water?

If relative density of a substance in $0.8$ , is it heavier or lighter than water?