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1
TG EAPCET 2024 (Online) 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Identify the set which is not correctly matched in the following.
A
$\mathrm{PH}_3$, colourless gas, rotten fish smell.
B
$\mathrm{Cl}_2$, greenish yellow gas, pungent smell.
C
Ne , fluoresent green gas, rotten egg smell.
D
$\mathrm{SO}_2$, colourless gas, pungent smell.
2
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The dioxides and monoxides of elements $X$ and $Y$ are amphoteric in nature. $X$ and $Y$ are respectively

A
$\mathrm{C}, \mathrm{Si}$
B
$\mathrm{Si}, \mathrm{Ge}$
C
$\mathrm{Sn}, \mathrm{Pb}$
D
$\mathrm{Ge}, \mathrm{Pb}$
3
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) : In group 15 elements nitrogen does not form pentahalides.

Reason (R) : Nitrogen can exhibit +5 oxidation state.

The correct option among the following is

A
(A) and (R) are true and (R) is the correct explanation of (A).
B
(A) and (R) are true but (R) is not correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.
4
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following reaction represents Deacon's method?

A
$2 \mathrm{H}_2 \mathrm{O}+2 \mathrm{Cl}_2 \xrightarrow{\text { Sunlight }} 4 \mathrm{HCl}+\mathrm{O}_2$
B
$4 \mathrm{HCl}+\mathrm{O}_2 \xrightarrow[723 \mathrm{~K}]{\mathrm{CaCl}_2} 2 \mathrm{H}_2 \mathrm{O}+\mathrm{Cl}_2$
C
$2 \mathrm{NaCl}+2 \mathrm{H}_2 \mathrm{O} \xrightarrow{\text { Electrolysis }} 2 \mathrm{NaOH}+\mathrm{H}_2+\mathrm{Cl}_2$
D
$\mathrm{Ca}(\mathrm{OH})_2+\mathrm{Cl}_2 \longrightarrow \mathrm{CaOCl}_2 \cdot \mathrm{H}_2 \mathrm{O}$
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