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Question
The element which is not common between the compounds called baking soda and soda ash is
Options
sodium
hydrogen
oxygen
carbon
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Solution
hydrogen
Washing soda (soda ash), Na2CO3 contains Na, C and O, whereas baking soda, NaHCO3, is made up of Na, C, H and O. So, the element, which is not common in the two, is hydrogen.
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