Question

b) A metal 'X' that produces white dazzling flame when burn in air. It can not react with cold water but can react with water on heating to produce respective hydroxide along with hydrogen gas. (i) Identify X. (ii) Write the chemical equation for the above reaction. ​

Answer 1

Answer:

a) Metal X is Magnesium (Mg).

b) Powder Y is Magnesium oxide, (MgO).

c) The substance with which metal X combines to form powder Y is Oxygen (of air), O

2

d) Substance Z is Magnesium hydroxide Mg(OH)

2

. Used as an antacid to relieve indigestion.

e) 2Mg+O

2

→2MgO

powder

Answer 2

Answer:

a) Metal X is Magnesium (Mg).

b) Powder Y is Magnesium oxide, (MgO).

c) The substance with which metal X combines to form powder Y is Oxygen (of air), O2

​d) Substance Z is Magnesium hydroxide Mg(OH)2

Used as an antacid to relieve indigestion.

e) 2Mg+O2→2MgO

                       powder

​

Explanation: