The ice and steam points of a certain thermometer are -20°C and 100°C respectively. Calculate the Celsius temperature corresponding to 70°C on the thermometer

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A. 84.0°
B. 75.0°
C. 64.0°
D. 58.0°

Correct Answer: Option B

Explanation

(70−20)/(100−20) = (θ−0)/(100−0)

θ = (90×100)/120 = 75°C

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