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Uses of Calcium Carbonate

Element A bur...

Question

Element A burns in $N_{2}$ to give ionic compound B.Compound B on hydrolysis gives a compound C which on boiling with sulphur dioxide turns milky.Then element A may be:

A

C a

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B

M g

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C

B a

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D

B e

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Solution

The correct options are
A $C a$
C $B a$
$3 C a + N_{2} △ \to {C a}_{3} N_{2}$ (ionic)
$3 B a + N_{2} △ \to {B a}_{3} N_{2}$ (ionic)
${C a}_{3} N_{2} + 6 H_{2} O ⟶ 3 C a {(O H)}_{2} + 2 N H_{3}$
$C a {(O H)}_{2} + S O_{2} ⟶ C a S O_{3} (m i l k y) + H_{2} O$
$B a {(O H)}_{2} + S O_{2} ⟶ B a S O_{3} (m i l k y f o r m a t i o n) + H_{2} O$

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