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CBSE Class 10 Answered

Energy  
Asked by akashwah9 | 29 Oct, 2018, 07:36: AM
answered-by-expert Expert Answer
Energy is ability to do work. SI unit of energy is Joule. According to conservation of enery, energy can neither be created nor be destroyed it can be transformed from one form to another form. There are different forms of energy. They are as follows:
 
Heat energy
chemical energy
mechanical energy
Nuclear energy
wind energy
solar energy etc. 
Answered by Shiwani Sawant | 29 Oct, 2018, 11:25: AM
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when hydrogen gas burns in presence of oxygen then water is formed and when water is electrolysed then hydrogen and oxygen gases are produced . state which type of reaction takes place
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An electric refrigerator rated 1 kW operates 6 hours daily. What is the cost of the energy to operate it for 15 days at rate of ₹ 3.00 per kWh?
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