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Standard XII

Chemistry

Theories of Catalysis

A vessel cont...

Question

A vessel contains an immiscible mixture of water and a liquid of density 0.8gm/cc.A cube of side 10 cm is placed in the mixture and it is observed that the water liquid interface is at the middle of cube height .Mass of the cube is :

420 gm

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680 gm

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225 gm

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900 gm

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Solution

The correct option is D 900 gm
Let mass of cube is $M$ gm.
$\begin{matrix} M g = (10 \times 10 \times 5) (1) g + (10 \times 10 \times 5) (0.8) g \Rightarrow M = 500 + 400 g m = 900 g m \end{matrix}$
$∴$ Option $D$ is correct.

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A vessel contains an immiscible mixture of water and a liquid of density 0.8gm/cc.A cube of side 10 cm is placed in the mixture and it is observed that the water liquid interface is at the middle of cube height .Mass of the cube is :

The correct option is D 900 gmLet mass of cube is Mgm.Mg=(10×10×5)(1)g+(10×10×5)(0.8)g⇒M=500+400gm=900gm∴ Option D is correct.

The correct option is D 900 gm
Let mass of cube is $M$ gm.
$\begin{matrix} M g = (10 \times 10 \times 5) (1) g + (10 \times 10 \times 5) (0.8) g \Rightarrow M = 500 + 400 g m = 900 g m \end{matrix}$
$∴$ Option $D$ is correct.