Chemistry-10th Carbon and its Compounds CBSE Board 2023 Medium
You want to test for hardness of water but hard water is not available in the laboratory. Which of the follow…
You want to test for hardness of water but hard water is not available in the laboratory. Which of the following compounds may be dissolved in pure water to make it hard ?
- (i)Hydrogen Carbonate of Sodium
- (ii)Sulphate of Magnesium
- (iii)Chloride of Calcium
- (iv)Carbonate of Sodium
- (a)(i) and (ii)
- (b)(ii) and (iii)
- (c)(iii) and (iv)
- (d)(i) and (iv)
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