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Washing soda is the common name for
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Sodium carbonate
Calcium bicarbonate
Sodium bicarbonate
Calcium carbonate
Answer : A
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1) Among the various allotropes of carbon,
coke is the hardest, graphite is the softest
diamond is the hardest, coke is the softest
diamond is the hardest, graphite is the softest
diamond is the hardest, lamp black is the softest
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2) Which of the following does not contain a coinage metal?
3) Reading of a barometer going down is an indication of
4) Which of the following is used for removing air bubbles from glass during its manufacture?
5) Air is a/an