Science

Which of the following salts do not have the water of crystallisation?
(i) Bleaching Powder
(ii) Plaster of Paris
(iii) Washing soda
(iv) Baking soda
(ii) and (iv)
(i) and (iii)
(ii) and (iii)
(i) and (iv)

Water

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Answer

(i) and (iv)

Reason — Bleaching Powder [CaOCl₂] and baking soda [NaHCO₃] do not have water of crystallization whereas plaster of Paris [CaSO₄. $\dfrac{1}{2}$ H₂O] and washing soda [Na₂CO₃.10H₂O] have.

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Science

Which of the following salts do not have the water of crystallisation?(i) Bleaching Powder(ii) Plaster of Paris(iii) Washing soda(iv) Baking soda(ii) and (iv)(i) and (iii)(ii) and (iii)(i) and (iv)

Water

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Which one of the following structures correctly depicts the compound CaCl2?

The pair(s) which will show displacement reaction is/are(i) NaCl solution and copper metal(ii) AgNO3 solution and copper metal(iii) Al2(SO4)3 solution and magnesium metal(iv) ZnSO4 solution and iron metal(ii) only(ii) and (iii)(iii) and (iv)(i) and (ii)

Which of the following salts do not have the water of crystallisation?
(i) Bleaching Powder
(ii) Plaster of Paris
(iii) Washing soda
(iv) Baking soda
(ii) and (iv)
(i) and (iii)
(ii) and (iii)
(i) and (iv)

Which one of the following structures correctly depicts the compound CaCl₂?

The pair(s) which will show displacement reaction is/are
(i) NaCl solution and copper metal
(ii) AgNO₃ solution and copper metal
(iii) Al₂(SO₄)₃ solution and magnesium metal
(iv) ZnSO₄ solution and iron metal
(ii) only
(ii) and (iii)
(iii) and (iv)
(i) and (ii)