Heat required by 200 g of water at 4200 J/kg/C to rise by 5 deg C is
A210 J only
B4000 J only
C4200 J
D21000 J only
Answer & Solution
Correct answer: C. 4200 J
1. Use Q = m * c * delta T.
2. Convert mass: 200 g = 0.2 kg.
3. Q = 0.2 * 4200 * 5.
4. = 4200 J.
_Source: Selina Concise Physics Class 8, Ch 5 Heat (Mistral OCR'd PDF), section on heat calculation_
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