TG EAPCET 2024 (Online) 11th May Morning Shift | p-Block Elements Question 1 | Chemistry

Among the oxides $\mathrm{SiO}_{2}, \mathrm{SO}_{2}, \mathrm{Al}_{2} \mathrm{O}_{3}$ and $\mathrm{P}_{2} \mathrm{O}_{3}$, the correct order of acidic strength is

$\mathrm{SiO}_{2} < \mathrm{SO}_{2} < \mathrm{Al}_{2} \mathrm{O}_{3} < \mathrm{P}_{2} \mathrm{O}_{3}$

$\mathrm{SO}_{2} < \mathrm{P}_{2} \mathrm{O}_{3} < \mathrm{Al}_{2} \mathrm{O}_{3} < \mathrm{SiO}_{2}$

$\mathrm{Al}_{2} \mathrm{O}_{3} < \mathrm{SiO}_{2} < \mathrm{P}_{2} \mathrm{O}_{3} < \mathrm{SO}_{2}$

$\mathrm{Al}_{2} \mathrm{O}_{3} < \mathrm{P}_{2} \mathrm{O}_{3} < \mathrm{SiO}_{2} < \mathrm{SO}_{2}$

TG EAPCET 2024 (Online) 11th May Morning Shift

MCQ (Single Correct Answer)

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The correct formula of borax is $\mathrm{Na}_{2}\left[\mathrm{~B}_{4} \mathrm{O}_{5}(\mathrm{OH})_{x}\right] \cdot y \mathrm{H}_{2} \mathrm{O}$. The sum of $x$ and $y$ is

TG EAPCET 2024 (Online) 11th May Morning Shift

MCQ (Single Correct Answer)

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Which among the following oxoacids of phosphorous will have $\mathrm{P}-\mathrm{O}-\mathrm{P}$ bonds?

I. $\mathrm{H}_{4} \mathrm{P}_{2} \mathrm{O}_{5}$

II. $\mathrm{H}_{4} \mathrm{P}_{2} \mathrm{O}_{6}$

III. $\mathrm{H}_{4} \mathrm{P}_{2} \mathrm{O}_{7}$

IV. $\left(\mathrm{HPO}_{3}\right)_{3}$

III and IV

I and II

I and III

II and IV

TG EAPCET 2024 (Online) 10th May Evening Shift

MCQ (Single Correct Answer)

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What are $X$ and $Y$ respectively in the following reactions ?

$ X \stackrel{\mathrm{CO}}{\longleftarrow} \mathrm{~B}_{2} \mathrm{H}_{6} \xrightarrow[\left(\mathrm{C}_{2} \mathrm{H}_{5}\right)_{2} \mathrm{O}]{\mathrm{NaH}} Y $

$\mathrm{BH}_{3} \cdot 2 \mathrm{CO} ; \mathrm{NaBO}_{2}$

$\mathrm{BH}_{3} \cdot \mathrm{CO} ; \mathrm{NaBH}_{4}$

$\mathrm{BH}_{3} \cdot \mathrm{CO} ; \mathrm{NaBO}_{2}$

$\mathrm{BH}_{3} \cdot \mathrm{CO} ; \mathrm{Na}_{2} \mathrm{~B}_{4} \mathrm{O}_{7}$

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