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Ca(2)B(6)O(11) + NA(2)CO(3) overset("Fus...

`Ca_(2)B_(6)O_(11) + NA_(2)CO_(3) overset("Fusted")rarr(A) + (B) + CaCO_(3)`
`(A)+CO_(2)rarr(B)+Na_(2)CO_(3)`
`(B) + Conc.HClrarr NaCl+"Acid"(C)`
`(C)overset("Strongly")underset("heated")rarr(D)`
`(D)+CuSO_(4)overset("Heated")underset("Inflame")rarr"Blue colured"(E)"Compound"`
Compound (E) is:

A

`Cu_(2)O`

B

`CuS`

C

`CuSO_(3)`

D

`Cu(BO_(2))_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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"Colemanite" + Na_(2)CO_(3) overset("Fused")rarr (A) + (B) + CO_(2) underset("Solution")((A)) + CO_(2) rarr(B) + Na_(2) CO_(3) (B) + conc HCl rarr NaCl + underset("Acid")((C)) underset("Acid")((C)) +H_(2)O rarr underset("Acid")((D)) (D) overset("Strong heating")rarr (E) (E) +CuSO_(4) overset("Heated") underset("inflame")rarr underset("Blue-coloured compound")((F)) . Compound (E) is.

"Colemanite" + Na_(2)CO_(3) overset("Fused")rarr (A) + (B) + CO_(2) underset("Solution")((A)) + CO_(2) rarr(B) + Na_(2) CO_(3) (B) + conc HCl rarr NaCl + underset("Acid")((C)) underset("Acid")((C)) +H_(2)O rarr underset("Acid")((D)) (D) overset("Strong heating")rarr (E) (E) +CuSO_(4) overset("Heated") underset("inflame")rarr underset("Blue-coloured compound")((F)) . Compound (B) is.

"Colemanite" + Na_(2)CO_(3) overset("Fused")rarr (A) + (B) + CO_(2) underset("Solution")((A)) + CO_(2) rarr(B) + Na_(2) CO_(3) (B) + conc HCl rarr NaCl + underset("Acid")((C)) underset("Acid")((C)) +H_(2)O rarr underset("Acid")((D)) (D) overset("Strong heating")rarr (E) (E) +CuSO_(4) overset("Heated") underset("inflame")rarr underset("Blue-coloured compound")((F)) . Compound (D) is.

"Colemanite" + Na_(2)CO_(3) overset("Fused")rarr (A) + (B) + CO_(2) underset("Solution")((A)) + CO_(2) rarr(B) + Na_(2) CO_(3) (B) + conc HCl rarr NaCl + underset("Acid")((C)) underset("Acid")((C)) +H_(2)O rarr underset("Acid")((D)) (D) overset("Strong heating")rarr (E) (E) +CuSO_(4) overset("Heated") underset("inflame")rarr underset("Blue-coloured compound")((F)) . Compound (C) is.

"Colemanite" + Na_(2)CO_(3) overset("Fused")rarr (A) + (B) + CO_(2) underset("Solution")((A)) + CO_(2) rarr(B) + Na_(2) CO_(3) (B) + conc HCl rarr NaCl + underset("Acid")((C)) underset("Acid")((C)) +H_(2)O rarr underset("Acid")((D)) (D) overset("Strong heating")rarr (E) (E) +CuSO_(4) overset("Heated") underset("inflame")rarr underset("Blue-coloured compound")((F)) . Compound (F) is.

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