Chemistry
Which one of the following group of gases contributes to the 'Green House Effect'?

Carbon monoxide and Sulphur dioxide
Carbon tetraflouride and Nitrous oxide
Carbon dioxide and Methane
Ammonia and Ozone

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Chemistry
Antacid tablets consist of

Hydroxides of sodium, magnesium and aluminium
Hydroxides of magnesium and sodium
Hydroxides of sodium and aluminium
Hydroxides of magnesium and aluminium

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