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Ca2B6O11+Na2CO3Fused−−(A)+(B)+CaCO3(A)+CO2(B)+Na2CO3Solution(B)+Conc.HCINaCI+Acid H2O(C)Strongly−−−−heated (D) Acid(C)(D)+CuSO4Heated−−−−inflameBlue coloured(E) compoundcompound (E) is -


A

Cu2O

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B

CuS

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C

CuSO3

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D

Cu(BO2)2

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Solution

The correct option is D

Cu(BO2)2


Compound (A) is - NaBO2
Compound (B) is - Na2B4O7
Compound (C) is - H3BO3
Compound (D) is - B2O3
Compound (E) is - Cu(BO2)2


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