Chemistry
From the knowledge of activity series, name a metal which shows the following properties:
(i) It reacts readily with cold water
(ii) It displaces hydrogen from hot water
(iii) It displaces hydrogen from dilute HCl
(iv) It forms a base which is insoluble in water.
Hydrogen
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Answer
(i) Sodium
(ii) Magnesium
(iii) Zinc
(iv) Calcium
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Related Questions
Write balanced equations and give your observations when the following metals react:
(i) Sodium with cold water
(ii) Calcium with cold water
(iii) Magnesium with boiling water
(iv) Magnesium with steam.
(i) Under what conditions iron reacts with water?
(ii) Give the balanced equation of the reaction.
(iii) What is noticed if the products are not allowed to escape?
Complete the following word equations:
(a) Sodium hydroxide + zinc ⟶ hydrogen + ……………
(b) Calcium + water ⟶ calcium hydroxide + ……………
Hydrogen can be prepared with the metal zinc by using
(i) acid
(ii) alkali
(iii) water
Give an equation in each case.