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1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

The correct order of boiling point in the following compounds is

A
$$\mathrm{HF}>\mathrm{H}_2 \mathrm{O}>\mathrm{NH}_3$$
B
$$\mathrm{H}_2 \mathrm{O}>\mathrm{HF}>\mathrm{NH}_3$$
C
$$\mathrm{NH}_3>\mathrm{H}_2 \mathrm{O}>\mathrm{HF}$$
D
$$\mathrm{NH}_3>\mathrm{HF}>\mathrm{H}_2 \mathrm{O}$$
2
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Bond enthalpies of $$A_2, B_2$$ and $$A B$$ are in the ratio $$2: 1: 2$$. If bond enthalpy of formation of $$A B$$ is $$-100 \mathrm{~kJ} \mathrm{~mol}^{-1}$$. The bond enthalpy of $$B_2$$ is

A
$$100 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
B
$$50 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
C
$$200 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
D
$$150 \mathrm{~kJ} \mathrm{~mol}^{-1}$$
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