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

Arrange the following in order of their electronegativity.

A
F > N > C > O
B
C > F > N > O
C
O > N > F > C
D
F > O > N > C
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

A colourless solid $$(X)$$ on heating evolved $$\mathrm{CO}_2$$ and also gave a white residue, soluble in water. Residue also gave $$\mathrm{CO}_2$$ when treated with dilute acid. $$(X)$$ is

A
$$\mathrm{Na}_2 \mathrm{CO}_3$$
B
$$\mathrm{CaCO}_3$$
C
$$\mathrm{Ca}\left(\mathrm{HCO}_3\right)_2$$
D
$$\mathrm{NaHCO}_3$$
3
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

Consider the following boron halides.

1. $$\mathrm{BF}_3$$

2. $$\mathrm{BCl}_3$$

3. $$\mathrm{BBr}_3$$

4. $$\mathrm{BI}_3$$

The Lewis acid characters of these halides are in the order of

A
1 < 2 < 3 < 4
B
1 < 3 < 2 < 4
C
4 < 3 < 2 < 1
D
4 < 2 < 3 < 1
4
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
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