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Home Questions XA6YT82PF3
Target Exam

CUET

Subject

General Test

Chapter

General Knowledge

Topic

Chemistry

Question:

Match the following and choose the correct option.

 Compound Chemical formula
(a) Bleaching powder (i) NaHCO3
(b) Baking soda (ii) CaOCl2
(c) Washing soda (iii) CaSO4.2H2O
(d) Gypsum (iv) Na2CO3.10H2O
Options:

(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)

(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)

(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

Correct Answer:

(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Explanation:

The correct answer is option 2. (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Bleaching powder is produced by the action of chlorine on dry slaked lime [Ca(OH)2].

Bleaching powder is represented as CaOCl2.

The baking soda is commonly used in the kitchen for making tasty crispy pakoras, etc. Sometimes it is added for faster cooking.

The chemical name of the compound is sodium hydrogencarbonate (NaHCO3).

Another chemical that can be obtained from sodium chloride is Na2CO3.10H2O (washing soda).

Plaster of Paris (CaSO4.\(\frac{1}{2}\)H2O) is a white powder and on mixing with water, it changes to gypsum (CaSO4.2H2O) once again giving a hard solid mass.

 

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