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Subject :NSO    Class : Class 6

Nowadays, CNG is used as a substitute for petrol and diesel. It is a more environment friendly and cleaner alternative to conventional fuels. Which of the following statements is incorrect for CNG?

ACNG is low in pollutants, high in calorific value and heat yield.
BCNG is economical and available in abundance globally.
CCNG is made by compressing natural gas to less than 1% of its volume at standard atmospheric pressure.
DNone of these

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