1
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following defect lowers the density of a solid?

A
Frenkel defect
B
Schottky defect
C
Both (a) and (b)
D
Interstitial defect
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following option is correct regarding $$\mathrm{OF}$$ and $$\mathrm{F}_2$$ ?

A
$$\mathrm{O F}$$ is paramagnetic while $$\mathrm{F}_2$$ is diamagnetic.
B
$$\mathrm{OF}$$ is more stable towards dissociation into atoms than $$\mathrm{F}_2$$.
C
Both (a) and (b) are correct.
D
None of the above is correct.
3
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Match the species given in column I with the shape given in column II and assign the correct code.

Column I (Species) Column II
(Shape)
A. $$\mathrm{SF_4}$$ (I) Tetrahedral
B. $$\mathrm{HClO_2}$$ (II) Pyramidal
C. $$\mathrm{BrO_3^-}$$ (III) See-saw shaped
D. $$\mathrm{NH_4^+}$$ (IV)
Angular

A
A - (I), B - (II), C - (III), D - (IV)
B
A - (II), B - (I), C - (IV), D - (III)
C
A - (III), B - (IV), C - (II), D - (I)
D
A - (IV), B - (III), C - (I), D - (II)
4
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Among the given species the isostructural pairs is

A
$$\mathrm{NF}_3$$ and $$\mathrm{BF}_3$$
B
$$\mathrm{BF}_4^{-}$$ and $$\mathrm{NH}_4^{+}$$
C
$$\mathrm{BCl}_3$$ and $$\mathrm{BrCl}_3$$
D
$$\mathrm{NH}_3$$ and $$\mathrm{NO}_3^{-}$$
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