Question

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Answer 1

Answer:

X---- Is  calcium metal.

Y-- Calcium Hydroxide

Z- Calcium Chloride

Explanation:

• Metal calcium gives Brick red colour on flame test.

When it reacts with cold water it forms calcium hydroxide  

Ca +2 H2O---> Ca(OH)2+H2

• calcium hydroxide is used to test the Carbon dioxide gas  which turns

lime water in milky white

Ca(OH)2 + CO2 ---> CaCO3

• Metal X reacts with Hydrochloric acid  and form calcium chloride and hydrogen gas which burns with pop sound

Ca+2HCl----> CaCl2 +H2

Answer 2

X---- Is  calcium metal.

Y-- Calcium Hydroxide

Z- Calcium Chloride

Explanation:

Metal calcium gives Brick red colour on flame test.

When it reacts with cold water it forms calcium hydroxide  

Ca +2 H2O---> Ca(OH)2+H2

calcium hydroxide is used to test the Carbon dioxide gas  which turns

lime water in milky white

Ca(OH)2 + CO2 ---> CaCO3

Metal X reacts with Hydrochloric acid  and form calcium chloride and hydrogen gas which burns with pop sound

Ca+2HCl----> CaCl2 +H2

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