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Lignite
Peat
Bituminous
Anthracite
Which of the following types of Noble gas is used for unconsciousness?
Which of the given coal contains 90 per cent of carbon
Which of the given is a covalent compound -
Which of the given is found in chlorophyll -
Which of the given is liquid non-metal
Which of the given is used as a catalyst in the production of high octane fuels -
Which of the given metals provides amphoteric oxide
Which of the most reactive metal?
Which of the properties of the elements is a whole number ?
Which of these acids is found in lemon and orange?