Question

(I) Which of the following metals does not react with cold water, but react with hot water to evolve hydrogen gas?
(1) Ca (2) Na (3) Mg (4) AI

(ii) Potassium reacts with cold water to form (1) KO ( (2) KOH (3) ko, (4) K(OH)2

(iii) Which of the following metals does not react with water at all?
(1) Iron (2) Zinc (3) Calcium (4) Lead​

Answer 1

Answer:

1. Al

2.K(oH)

3. lead

Explanation:

please mark me as brainlist