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प्रश्न
Describe two important uses of the following sodium carbonate.
उत्तर
Uses of sodium carbonate-
- It is generally used in glass and soap industry.
- It is used as a water softener.
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संबंधित प्रश्न
Discuss the various reactions that occur in the Solvay process.
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\[\ce{O^{-}2 + H2O ->}\]
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| Column I | Column II |
| (i) CaCO3 | (a) Dentistry, ornamental work |
| (ii) Ca(OH)2 | (b) Manufacture of sodium carbonate from caustic soda |
| (iii) CaO | (c) Most negative E value among alkali O metals. |
| (iv) CaSO4 | (c) Manufacture of high-quality paper |
| (d) Used in white washing |
Match the elements given in Column I with the colour they impart to the flame given in Column II.
| Column I | Column II |
| (i) Cs | (a) Apple green |
| (ii) Na | (b) Violet |
| (iii) K | (c) Brick red |
| (iv) Ca | (d) Yellow |
| (v) Sr | (e) Crimson red |
| vi) Ba | (f) Blue |
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