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Home PYQs Which one of the following fuels causes minimum environmental pollution? Diesel Coal Hydrogen Kerosene Explanation Option (c) is correct Hydrogen, when used as fuel, produces water as the main by-product, making it the cleanest among the options Answer: (c) Hydrogen 1995, PYQs ←A person with ‘AB’ blood group is sometimes called a universal recipient because of the [1995] The difference between a nuclear reactor and an atomic bomb is that [1995]→ ←A person with ‘AB’ blood group is sometimes called a universal recipient because of the [1995] The difference between a nuclear reactor and an atomic bomb is that [1995]→