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Complete the following reactions: ?
(i) `SiO_(2) + 2NaOH to X + H_(2) O`
(ii) `SiO_(2) + 4HF to Y + 2H_(2) O`
(iii) `Si + 2CH_(3)CI underset(570 K)overset("Cu power")(to) Z`
`{:(X,Y,Z):}`
A. `{:(Na_(2)SiO_(3), SiF_(4), (CH_(3))_(2) SiCI_(2)):}`
B. `{:(H_(2) SiO_(3), SiF_(2), CH_(3) SiCI_(3)):}`
C. `(Na_(2)SIO_(3), H_(2)SiO_(3),(CH_(3))_(3) SiCI):}`
D. `{:(Na_(2)SiO_(3), H_(2)SiF_(4),(CH_(3))_(2) SiCI_(2)):}`

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Correct Answer - A
`SiO_(2) + 2NaOH to underset((X))(Na_(2)SiO_(3)) + H_(2)O`
`SiO_(2) 4HF to underset((Y))(SiF_(4)) + 2H_(2) O`
`Si + 2CH_(3)CI underset(570 K)overset("Cu.power")(to) (CH_(3))_(2)SiCI_(2)`

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