TS EAMCET 2023 (Online) 14th May Morning Shift | s-Block Elements Question 19 | Chemistry

The alkali metal with lowest $E^{\circ}{ }_{M^{+} / M}(\mathrm{~V})$ is $X$ and the alkali metal with highest $E^{\circ}{ }_{M^{+} / M}(\mathrm{~V})$ is $Y$. Then $X$ and $Y$ are respectively

$\mathrm{Li}, \mathrm{Na}$

$\mathrm{Li}, \mathrm{Cs}$

$\mathrm{Na}, \mathrm{Li}$

$\mathrm{Cs}, \mathrm{Li}$

TS EAMCET 2023 (Online) 14th May Morning Shift

MCQ (Single Correct Answer)

-0

Assertion (A) Be and Mg do not impart any colour to the flame.

Reason (R) The electrons in them are strongly bound to get excited by flame.

(A) and (R) are true (R) is the correct explanation of (A).

(A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is correct but (R) is incorrect.

(A) is incorrect but (R) is correct.

TS EAMCET 2023 (Online) 13th May Evening Shift

MCQ (Single Correct Answer)

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Which one of the following statements is not correct?

Molecular formula of calgon is $\mathrm{NaAlSiO}_4$.

Beryllium halides are soluble in organic solvents.

Among alkali metals, the reducing property of sodium is least in aqueous solution.

White metal is an alloy of lithium.

TS EAMCET 2023 (Online) 13th May Evening Shift

MCQ (Single Correct Answer)

-0

Thermal decomposition of lithium nitrate gives

$\mathrm{LiO}_2, \mathrm{O}_2, \mathrm{NO}_2$

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{~N}_2 \mathrm{O}$

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{~N}_2$

$\mathrm{Li}_2 \mathrm{O}, \mathrm{O}_2, \mathrm{NO}_2$

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