Surface of the lake is at $2^{\circ} C$. The temperature of the bottom of the lake is ....... $^{\circ} C$
A$2$
B$3$
C$4$
D$1$
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C$4$
c (c)
The densest layer of water will be at bottom. The density of water is maximum at $4^{\circ}\,C$. So the temperature of bottom of lake will be $4^{\circ}\,C$.
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