Which of the following salts does not contain water of crystallisation ?

Blue viltriol

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Baking soda

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Washing soda

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Gypsum

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Solution

The correct option is B Baking soda
Blue vitriol is copper sulphate pentahydrate ${C u S O}_{4} \cdot 5 H_{2} O$ . It has 5 moles of water.
Washing soda is sodium carbonate monohydrate ${N a}_{2} {C O}_{3} \cdot H_{2} O$
Gypsum is calcium sulphate dihydrate ${C a S O}_{4} \cdot 2 H_{2} O$ . It can be used as a fertilizer,a main constituent in many forms of plaster and in blackboard chalk.
Baking soda is sodium bicarbonate in anhydrous form without any water of crystallisation and it is widely used as dry fire extinguisher because of its alkali nature.

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Similar questions

Name a salt which does not contain water of crystallisation

Which of the following salts does not contain water of crystallization?
(a) Blue vitriol
(b) Baking soda
(c) Washing soda
(d) Gypsum

Question 04.
Which of the following salts does not contain water of crystallization?
(a) Blue vitriol
(b) Baking soda
(c) Washing soda
(d) Gypsum

(a) Why does common salt get wet during the rainy season ?

(b) How can this impurity be removed ?

(d) Name two crystalline substances which do not contain water of crystallisation.

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