Question

9
A substance X' which is an oxide of group 2 element, is used intensively
in the cement industry. This element is present in bones also. On
treatment with water, it forms a solution 'Y' which turns red litmus blue
Y' on reaction with yellowish, green coloured gas forms a compound
"Z used to disinfect swimming pools. Write the chemical reactions involved.​

Answer 1

Answer:

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Answer 2

Explanation:

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★ The intersection of a colum and row is called a Cell ?

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South Korea

The two major disadvantages of wind power include initial cost and technology immaturity. Firstly, constructing turbines and wind facilities is extremely expensive.

The second disadvantage is technology immaturity.