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Heat produced on burning 6.3 g of a fule raises the temperature of 1.5 kg of water from 30⁰C to 60⁰C.Given that the specific heat of water is 4.2 J/g ⁰C.Calculate the calorific value of the fuel.
Options
(a) 30 kJ/mol
(b) 30 kJ/g
(c) 30 kJ/kg
(d) 30 kJ/mg
Correct Answer:
30 kJ/g
Explanation:
Q = msΔt ,
Q = 1.5 x 4.2 x (60-30) x 1000, Q = 189 x 10³ J , Calorific value = 189 x 10³ / 6.3 = 30 kJ/g.
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Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following compound react with NaHCO3 solution to give sodium salt
- Action of acetylene on dilute H₂SO₄ gives
- Who modified Bohr’s theory by introducing elliptical orbits for electron path
- Oxidation number of chromium in Na₂Cr₂O₇ is
- The chemical substance used to bring down body temperature in high fever
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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