| ⇦ | 
| ⇨ |
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.
Related Questions: - Which of these have no unit?
- Hydrogen burns in air with a
- The first ionisation potential will be maximum for
- 0.765 gm of acid gives 0.55 g of CO₂ and 0.12 g of H₂O.Then find the ratio
- The pressure and temperature of 4 dm³ of carbon dioxide gas are doubled
Topics: Thermodynamics
(179)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of these have no unit?
- Hydrogen burns in air with a
- The first ionisation potential will be maximum for
- 0.765 gm of acid gives 0.55 g of CO₂ and 0.12 g of H₂O.Then find the ratio
- The pressure and temperature of 4 dm³ of carbon dioxide gas are doubled
Topics: Thermodynamics (179)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply