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Which of the following type of coal has the lowest proportion of volatile matter ?
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 ?