1 markMCQSection A

The water of crystallization is present in: (i) Bleaching Powder (ii) Plaster of Paris (iii) Washing Soda (iv) Baking Soda

Acids, Bases and Salts

Water of Crystallization

Options

(A)(ii) and (iv)

(B)(ii) and (iii)

(C)(i) and (iii)

(D)(i) and (iv)

Official Answer

(ii) and (iii)

Hint

Recall the composition of the given substances.

Analysis & Explanation

Plaster of Paris (CaSO4· $\frac{1}{2}$ H2O) and washing soda (Na2CO3·10H2O) both contain water of crystallization. Bleaching powder (CaOCl2) and baking soda (NaHCO3) do not contain water of crystallization.

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2025?

This question carries 1 mark in the CBSE Class 10 Science 2025 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Acids, Bases and Salts" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Water of Crystallization" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2025 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2025 paper.