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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
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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