TG EAPCET 2025 (Online) 2nd May Evening Shift | p-Block Elements Question 19 | Chemistry

An oxoacid of phosphorus ' $X$ ' reduces silver nitrate solution to metallic silver and gets oxidised to another compound $Y . X$ and $Y$ respectively are

$\mathrm{HPO}_3, \mathrm{H}_3 \mathrm{PO}_4$

$\mathrm{H}_3 \mathrm{PO}_2, \mathrm{H}_3 \mathrm{PO}_4$

$\mathrm{H}_3 \mathrm{PO}_3, \mathrm{H}_3 \mathrm{PO}_2$

$\mathrm{H}_3 \mathrm{PO}_2, \mathrm{HNO}_3$

TG EAPCET 2025 (Online) 2nd May Evening Shift

MCQ (Single Correct Answer)

-0

Zinc on reaction with concentrated nitric acid gives an oxide of nitrogen $(A)$. Zinc with dilute nitric acid gives another oxide of nitrogen $(B)$. Oxidation numbers of nitrogen in $(A)$ and $(B)$ are respectively

$+4,+1$

$+4,+2$

$+2,+4$

$+1,+4$

TG EAPCET 2025 (Online) 2nd May Evening Shift

MCQ (Single Correct Answer)

-0

Identify the reaction related to Deacon's process

$$ 2 \mathrm{H}_2 \mathrm{O}+2 \mathrm{Cl}_2 \xrightarrow{\text { sunight }} 4 \mathrm{HCl}+\mathrm{O}_2 $$

$$ 4 \mathrm{HCl}+\mathrm{O}_2 \xrightarrow[723 \mathrm{~K}]{\mathrm{CuaC}_2} 2 \mathrm{Cl}_2+2 \mathrm{H}_2 \mathrm{O} $$

$$ 2 \mathrm{NaCl}+\mathrm{H}_2 \mathrm{SO}_4 \xrightarrow{823 \mathrm{~K}} \mathrm{Na}_2 \mathrm{SO}_4+2 \mathrm{HCl} $$

$$ \mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3+\mathrm{Cl}_2+\mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{Na}_2 \mathrm{SO}_4+2 \mathrm{HCl}+\mathrm{S} $$

TG EAPCET 2025 (Online) 2nd May Morning Shift

MCQ (Single Correct Answer)

-0

Phosphorus on reaction with sulphuryl chloride gives a compound $X$, which on complete hydrolysis gives $Y$. $X$ and $Y$ are respectively.

$\mathrm{PCl}_3, \mathrm{H}_3 \mathrm{PO}_3$

$\mathrm{PCl}_5, \mathrm{POCl}_3$

$\mathrm{PCl}_5, \mathrm{H}_3 \mathrm{PO}_4$

$\mathrm{PCl}_3, \mathrm{H}_3 \mathrm{PO}_2$

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