s-Block Elements · Chemistry · AP EAPCET

Identify the correct statements from the following.

(A) $$\mathrm{BeSO}_4$$ is soluble in water.

(B) BeO is an amphoteric oxide.

(C) CO can be obtained by heating $$\mathrm{CaCO}_3$$ at $$1070-1270 \mathrm{~K}$$.

The pair of elements that form both oxides and nitrides, when burnt in air are

Assertion (A) MgSO$$_4$$ is readily soluble in water.

Reason (R) The greater hydration enthalpy of Mg$$^{2+}$$ ions overcome is lattice enthalpy.

Identify A and B from the following reaction,

$$\mathrm{NaNO}_3 \xrightarrow{\Delta} x A+y B$$

Which of the following does not form double salts?

In the preparation of baking soda, H$$_2$$O and CO$$_2$$ in ratio ......... is used to react with Na$$_2$$CO$$_3$$.

Which metal oxide among the following gives H$$_2$$O$$_2$$ on treatment with dilute acid?

Assertion (A) K, Rb and Cs form superoxides.

Reason (R) The stability of superoxides increases from K to Cs due to decrease in lattice energy.

When borax is dissolved in water, it gives an alkaline solution. The alkaline solution consists the following products