1
KCET 2020
MCQ (Single Correct Answer)
+1
-0

Bond angle is $$\mathrm{PH}_4^{+}$$ is more than that of $$\mathrm{PH}_3$$. This is because

A
lone pair - bond pair repulsion exists in $$\mathrm{PH}_3$$
B
$$\mathrm{PH}_4^{+}$$ has square planar structure
C
$$\mathrm{PH}_3$$ has planar trigonal structure
D
hybridisation of $$\mathrm{P}$$ changes when $$\mathrm{PH}_3$$ is converted to $$\mathrm{PH}_4^{+}$$
2
KCET 2020
MCQ (Single Correct Answer)
+1
-0

Incorrectly matched pair is

A
$$\mathrm{XeO}_3$$ pyramidal
B
$$\mathrm{XeF}_4$$ tetrahedral
C
$$\mathrm{XeF}_6$$ disorted octahedral
D
$$\mathrm{XeOF}_4$$ square pyramidal
3
KCET 2020
MCQ (Single Correct Answer)
+1
-0

Which of the following has the lowest boiling point?

A
$$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}$$
B
$$\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{NH}_2$$
C
$$\mathrm{CH}_3-\mathrm{O}-\mathrm{CH}_3$$
D
$$\mathrm{HCOOH}$$
4
KCET 2020
MCQ (Single Correct Answer)
+1
-0

The percentage of $$s$$-character in the hybrid orbitals of nitrogen in $$\mathrm{NO}_2^{+}, \mathrm{NO}_3^{-}$$ respectively are

A
$$33.3 \%, 50 \%, 25 \%$$
B
$$33.3 \%, 25 \%, 50 \%$$
C
$$50 \%, 33.3 \%, 25 \%$$
D
$$25 \%, 50 \%, 33.3 \%$$
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