1
TG EAPCET 2024 (Online) 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Among the hydrides $\mathrm{NH}_3, \mathrm{PH}_3$ and $\mathrm{BiH}_3$, the hydride with highest boiling point is $X$ and the hydride with lowest boiling point is $Y$. What are $X$ and $Y$ respectively?
A
$\mathrm{PH}_3, \mathrm{NH}_3$
B
$\mathrm{NH}_3, \mathrm{PH}_3$
C
$\mathrm{BiH}_3, \mathrm{PH}_3$
D
$\mathrm{NH}_3, \mathrm{BiH}_3$
2
TG EAPCET 2024 (Online) 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Xenon (VI) fluoride on complete hydrolysis gives an oxide of xenon ' $O$ '. The total number of $\sigma$ and $\pi$-bonds $\sin$ ' $O$ ' is i"
A
2
B
4
C
6
D
8
3
TG EAPCET 2024 (Online) 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Consider the following reactions (not balanced).

$$ \begin{array}{r} \mathrm{BF}_3+\mathrm{NaH} \xrightarrow{450 \mathrm{~K}} X+\mathrm{NaF} \\ X+\mathrm{H}_2 \mathrm{O} \longrightarrow Y+\mathrm{H}_2 \uparrow \end{array} $$

The correct statements about $X$ and $Y$ are

I. $X$ is an electron deficient molecule.

II. in $X, B-B$ bond is present.

III. $Y$ is a weak tribasic acid.

IV. $Y$ acts as a Lewis acid.

A
I and IV
B
II and III
C
II and IV
D
I and III
4
TG EAPCET 2024 (Online) 9th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following does not exist?
A
$\left[\mathrm{GeCl}_6\right]^{-2}$
B
$\left[\mathrm{SiF}_6\right]^{2-}$
C
$\left[\mathrm{SCl}_6\right]^{2-}$
D
$\left[\mathrm{Sn}(\mathrm{OH})_6\right]^{2-}$
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