Fire extinguishers emit which gas?
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What is the name of the acid in grapes?
Magnesium oxide (MgO) + Water (H2O) = ?
The oceanic crust mainly consists of silica and __________.
Manganite is an ore/mineral of
Cinnabar is an ore/mineral of
________ is used for making vinegar.
Which of the following gas leaked in the Bhopal Gas tragedy in December 1984?