Class 8 Exam > Class 8 Questions > The total amount of heat produced by a fuel h...
Start Learning for Free
The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?
- a)2500 kg
- b)250 kg
- c)25 kg
- d)2.5 kg
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
The total amount of heat produced by a fuel having a calorific value o...
1 kg of fuel when burnt gives 20,000 joules of heat energy. 50,000 joules of heat energy will be produced by 2.5 kg of fuel as given below. 1 kg fuel produces 20kJkg−1 heat ? fuel produces 50kJkg−1 heat 
Most Upvoted Answer
The total amount of heat produced by a fuel having a calorific value o...
Given:
Calorific value of fuel = 20 kJ/kg
Total heat produced = 50,000 J
To find:
Amount of fuel burned
Solution:
The calorific value of a fuel is the amount of heat energy produced when a unit mass of fuel is burned completely. It is expressed in units of energy per unit mass (kJ/kg in this case).
To find the amount of fuel burned, we can use the formula:
Amount of fuel burned = Total heat produced / Calorific value of fuel
Substituting the given values:
Amount of fuel burned = 50,000 J / 20 kJ/kg
To simplify the calculation, we need to convert the units of the total heat produced to kJ:
50,000 J = 50 kJ
Amount of fuel burned = 50 kJ / 20 kJ/kg
Cancelling the units:
The unit "kJ" in the numerator cancels out with the unit "kJ" in the denominator, leaving us with the unit "kg" for the amount of fuel burned.
Amount of fuel burned = 50/20 kg
Simplifying the division:
Amount of fuel burned = 2.5 kg
Therefore, the correct answer is option D) 2.5 kg.
Calorific value of fuel = 20 kJ/kg
Total heat produced = 50,000 J
To find:
Amount of fuel burned
Solution:
The calorific value of a fuel is the amount of heat energy produced when a unit mass of fuel is burned completely. It is expressed in units of energy per unit mass (kJ/kg in this case).
To find the amount of fuel burned, we can use the formula:
Amount of fuel burned = Total heat produced / Calorific value of fuel
Substituting the given values:
Amount of fuel burned = 50,000 J / 20 kJ/kg
To simplify the calculation, we need to convert the units of the total heat produced to kJ:
50,000 J = 50 kJ
Amount of fuel burned = 50 kJ / 20 kJ/kg
Cancelling the units:
The unit "kJ" in the numerator cancels out with the unit "kJ" in the denominator, leaving us with the unit "kg" for the amount of fuel burned.
Amount of fuel burned = 50/20 kg
Simplifying the division:
Amount of fuel burned = 2.5 kg
Therefore, the correct answer is option D) 2.5 kg.
Free Test
FREE
| Start Free Test |
Community Answer
The total amount of heat produced by a fuel having a calorific value o...
Same question.....
Attention Class 8 Students!
To make sure you are not studying endlessly, EduRev has designed Class 8 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 8.
|
Explore Courses for Class 8 exam
|
|
Similar Class 8 Doubts
Top Courses for Class 8View all
The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer?
Question Description
The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer?.
The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer?.
Solutions for The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 8.
Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free.
Here you can find the meaning of The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?a)2500 kgb)250 kgc)25 kgd)2.5 kgCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 8 tests.
|
|
Explore Courses for Class 8 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup