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 A is the correct explanation of R.
(B) Both A and R are correct but A is not the correct explanation of R.
(C) Both A and R are not correct.
(D) A is not correct but R is correct.
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 A is the correct explanation of R.
(B) Both A and R are correct but A is not the correct explanation of R.
(C) Both A and R are not correct.
(D) A is not correct but R is correct.
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1 Answer
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This is a assertion and reason type question as classified in NCERT Exemplar
(A) Explanation:
Alkaline earth metals are stable at room temperature except beryllium carbonate. It decomposes to give beryllium oxide and carbon dioxide. It is kept in an atmosphere of carbon dioxide so that equilibrium shifts to the right. The reaction is shown below. BeCO3 → BeO+CO2
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