Question

Following observations are observed when calcium oxide reacts vigorously with water Identify incorrect observations – (i) It is an endothermic reaction (ii) Slaked lime is produced. (iii) Quick lime is produced (iv) It is an exothermic reaction. (v) It is a combination reaction. (a) (i) and (ii) (b) (iii) and (iv) (c) (i) and (iii) (d) (ii) , (iv) and (v)​

Answer 1

Answer:

c is correct ( 1 and 3) is incorrect

Answer 2

The correct answer will be option d.

• Calcium oxide when reacts with water produces slaked lime which is chemically calcium hydroxide.

• The reaction is exothermic that means heat is evolved.

• The reaction is a combination reaction as the reactants combine to form a single product.

                                 CaO+H₂ O→Ca(OH)₂

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