CBSE Class 10 Science
Question 21 of 46
Solved 2023 Question Paper CBSE Class 10 Science — Question 1
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Question Question 21(a)
(i) A compound 'X' which is prepared from gypsum has the property of hardening when mixed with proper quantity of water.
Identify 'X' and write its chemical formula.
(ii) State the difference in chemical composition between baking soda and baking powder.
(i) Plaster of paris — CaSO4.H2O
(ii) Difference in chemical composition between baking soda and baking powder:
| Baking soda | Baking powder |
|---|---|
| It has only one ingredient – sodium hydrogen carbonate [NaHCO3]. | For making baking powder, baking soda is mixed with mild edible acids such as (tartaric acid). |