Ice starts forming in a lake with water at \[0{}^\circ C\]when the atm – McqOptions

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1.	Ice starts forming in a lake with water at \[0{}^\circ C\]when the atmospheric temperature is \[-10{}^\circ C\]. If the time taken for the first 1 cm of ice to be formed is 7 hours, then the time taken for the thickness of ice to change from 1 cm to 2 cm is
A.	7 hours
B.	14 hours
C.	21 hours
D.	3.5 hours
Answer» D. 3.5 hours

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