Chemistry
What is the maximum Water Vapour content in the atmosphere?

3 to 4 per cent
5 to 6 per cent
2 to 3 per cent
4 to 5 per cent

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Chemistry
Antacid tablets consist of

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

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