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One of the disadvantages of solid fuel is _________

One of the disadvantages of solid fuel is _________ Correct Answer clinker formation

The clinker formation is the main disadvantage of solid fuels. They can be stored easily and transportation is also easy and having the moderate ignition temperature is also an advantage as we can control the rate of combustion.

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1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by products.
2. Fuel cells can be used for powering buildings and not for small devices like laptop, computers.
3. Fuel cells produce electricity in the form of Alternating Current (AC).
Which of the statements given above is/are correct?
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