1.

Which of the following is /are correct?\

Answer»

`Al_(2)O_(3)`reacts with CaO but not with `SiO_(2)`
THERMAL stability of carbonates : `BeCO_(3)gtMgCO_(3)gtCaCO_(3)gtSrCO_(3)gtBaCO_(3)`
SOLUBILITY of sulphates: `BeSO_(4)gtMgSO_(4)gtCaSO_(4)gtSrSO_(4)gtBaSO_(4)`
`BeCl_(2)`fors acidic solution in water while `BaCl_(2)` forms neutral solution.

Answer :4


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