Physics-Temperature & Heat
NEET Physics Temperature & Heat MCQ Question
Type: MCQ-numerical-Easy-Class 11
What is the heat required to convert 2 kg of ice at 0°C to steam at 100°C?
A
6.066 × 10^6 J
B
7.5 × 10^6 J
C
55 × 10^6 J
D
5.3 × 10^6 J
Correct Answer
Option A
Detailed Explanation
The total heat is calculated by adding the heat required for each phase change and temperature change: Q1 = mLf = 2 × 3.35 × 10^5, Q2 = msΔT = 2 × 4186 × 100, Q3 = mL = 2 × 2.256 × 10^6. Sum these to get 6.066 × 10^6 J.
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