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Nysa Singh
Subject: Science
, asked on 1/3/18
Please answer Q8
8.
A certain fuel X produced 75,000 kJ of heat on complete combustion of 3 kg of it. Another fuel Y produced 1,00,000 kJ of heat when 5 kg of the fuel was burnt completely.
a) Find the calorific value of X and Y.
b) Out of X and Y, which one is more efficient and by how much amount ?
Answer
1
Dhruvang Patel
Subject: Science
, asked on 28/2/18
What is the role of water in controlling a fire?
Answer
6
Vansh Sawnani
Subject: Science
, asked on 25/2/18
Does biogas produce energy through combustion?
Answer
1
Nysa Singh
Subject: Science
, asked on 24/2/18
Why paper burn with yellow flame
Answer
1
Joanna
Subject: Science
, asked on 12/2/18
Charcoal, coal and coke burn without flame. Why?
Answer
1
Aakriti Ghosh
Subject: Science
, asked on 10/2/18
The substance that undergoes spontaneous combustion is?
yellow, brown sulphur
red, white phosphorus
Answer
3
Rahul Sharma
Subject: Science
, asked on 8/2/18
what is the ignition temperature of white phosphorus
Answer
3
Dhruvang Patel
Subject: Science
, asked on 4/2/18
Carbon Dioxide is an excellent extinguisher.
Answer
1
Ishaan Gupta
Subject: Science
, asked on 26/1/18
60 megajoule energy is produced on combustion of 2 kilogram of coal. find how much energy is produced on burning of 0.5 of coal also find the calorific value of coal.
Answer
3
Ishaan Gupta
Subject: Science
, asked on 26/1/18
How much energy will one kilogram mass of would yield on complete combustion if its calorific value where 18 kilojoule per gram?
Answer
3
Shahana
Subject: Science
, asked on 16/1/18
why is it dangerous to stay in the garage by keeping the engine of the car running
Answer
1
Kartik Raj
Subject: Science
, asked on 10/1/18
WHAT KIND OF ARRANGEMENTS ARE AVAILABLE TO EXTINGUISH FIRE AT A PETROL PUMP?
Answer
1
Dhruv Singal
Subject: Science
, asked on 7/1/18
Why is soot produced during some combustions
Answer
1
Tiasha Chakraborty
Subject: Science
, asked on 6/1/18
4. The calorific values of petrol and CNG are 45000 kJ/kg and 50,000 kJ/kg, respectively. If you have vehicle which can run on petrol as well as CNG, which fuel will you prefer and why?
Answer
2
Owais Nawaz Khan
Subject: Science
, asked on 6/1/18
What determines biodegradability of a chemical?Explain.
Answer
3
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8. A certain fuel X produced 75,000 kJ of heat on complete combustion of 3 kg of it. Another fuel Y produced 1,00,000 kJ of heat when 5 kg of the fuel was burnt completely.
a) Find the calorific value of X and Y.
b) Out of X and Y, which one is more efficient and by how much amount ?
yellow, brown sulphur
red, white phosphorus