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Question

Assertion (A): Beryllium carbonate is kept in the atmosphere of carbon dioxide.

Reason (R) : Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide.


A
Both A and R are correct and R is the correct explanation of A.

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B
Both A and R are not correct.

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C
A is not correct but R is correct.

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D
Both A and R are correct and R is not the correct explanation of A.

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Solution

The correct option is A Both A and R are correct and R is the correct explanation of A.


Analyzing the assertion

Yes, Beryllium carbonate is kept in the atmosphere of carbon dioxide. So, the statement given in assertion is correct.

Analyzing the reason

Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide. This reaction is reversible, hence, to shift the equilibrium to the right, BeCO3 is placed in the CO2 atmosphere.

BeCO3BeO + CO2

So, the statement given in reason is correct.

From the above explanation we can conclude that both assertion and reason are correct, and reason is the correct explanation of assertion.

Hence, option (A) is correct answer.


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