1
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

Affinity for hydrogen decreases in the group from fluorine to iodine. Which of the halogen acids should have highest bond dissociation enthalpy?

A
HF
B
HCl
C
HBr
D
HI
2
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

Which of the following oxyacid does not contain $$\mathrm{P}-\mathrm{O}-\mathrm{P}$$ bond?

A
Isohypophosphoric acid
B
Pyrophosphorus acid
C
Diphosphoric acid
D
Hypophosphoric acid
3
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

$$\mathop {8N{H_3}}\limits_{(Excess)} + 3C{l_2}\buildrel {} \over \longrightarrow X$$

$$N{H_3} + \mathop {3C{l_2}}\limits_{(Excess)} \buildrel {} \over \longrightarrow Y$$

What is X and Y in the above reaction?

A
$$X=6 \mathrm{NH}_4 \mathrm{Cl}+\mathrm{N}_2 ; Y=\mathrm{NCl}_3+3 \mathrm{HCl}$$
B
$$X=\mathrm{NCl}_3+3 \mathrm{HCl} ; Y=6 \mathrm{NH}_4 \mathrm{Cl}+\mathrm{N}_2$$
C
$$X=\mathrm{NCl}_3+\mathrm{N}_2 ; Y=6 \mathrm{NH}_4 \mathrm{Cl}+3 \mathrm{HCl}$$
D
$$X=6 \mathrm{NH}_4 \mathrm{Cl}+3 \mathrm{HCl} ; Y=\mathrm{NCl}_3+\mathrm{N}_2$$
4
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

Which of the following products will be obtained when copper metal is reacted with $$\mathrm{HNO}_3$$ ?

A
$$\mathrm{NO}$$ and $$\mathrm{N}_2 \mathrm{O}_5$$
B
$$\mathrm{NO}$$ and $$\mathrm{NO}_2$$
C
$$\mathrm{NO}_2$$ and $$\mathrm{N}_2 \mathrm{O}_5$$
D
$$\mathrm{HNO}_2$$ and $$\mathrm{N}_2$$
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