iCON Education - p-Block Elements AIIMS Test

Question 1: Palette 1/9

AIIMS 2019 MCQ

Which of the following statement is correct for oleum?

It is prepared by adsorption of $\mathrm{SO}_3$ in conc. $\mathrm{H}_2 \mathrm{SO}_4$

It contains $\mathrm{O}-\mathrm{O}$ groups

It has six $\mathrm{OH}$ groups

None of the above

Question 2: Palette 2/9

AIIMS 2019 MCQ

Which of the following inert gas participate in chemical reaction?

None of these

Question 3: Palette 3/9

AIIMS 2018 MCQ

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

HCl

HBr

Question 4: Palette 4/9

AIIMS 2018 MCQ

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

Isohypophosphoric acid

Pyrophosphorus acid

Diphosphoric acid

Hypophosphoric acid

Question 5: Palette 5/9

AIIMS 2018 MCQ

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

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

What is X and Y in the above reaction?

$X=6 \mathrm{NH}_4 \mathrm{Cl}+\mathrm{N}_2 ; Y=\mathrm{NCl}_3+3 \mathrm{HCl}$

$X=\mathrm{NCl}_3+3 \mathrm{HCl} ; Y=6 \mathrm{NH}_4 \mathrm{Cl}+\mathrm{N}_2$

$X=\mathrm{NCl}_3+\mathrm{N}_2 ; Y=6 \mathrm{NH}_4 \mathrm{Cl}+3 \mathrm{HCl}$

$X=6 \mathrm{NH}_4 \mathrm{Cl}+3 \mathrm{HCl} ; Y=\mathrm{NCl}_3+\mathrm{N}_2$

Question 6: Palette 6/9

AIIMS 2018 MCQ

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

$\mathrm{NO}$ and $\mathrm{N}_2 \mathrm{O}_5$

$\mathrm{NO}$ and $\mathrm{NO}_2$

$\mathrm{NO}_2$ and $\mathrm{N}_2 \mathrm{O}_5$

$\mathrm{HNO}_2$ and $\mathrm{N}_2$

Question 7: Palette 7/9

AIIMS 2018 MCQ

A green yellow gas reacts with an alkali metal hydroxide to form a halate which can be used in fireworks and safety matches. The gas and halate are, respectively

$\mathrm{Br}_2, \mathrm{KBrO}_3$

$\mathrm{Cl}_2, \mathrm{KClO}_3$

$\mathrm{I}_2, \mathrm{NaIO}_3$

$\mathrm{Cl}_2, \mathrm{NaClO}_3$

Question 8: Palette 8/9

AIIMS 2018 MCQ

Assertion (A) $\mathrm{N}_2$ is less reactive than $\mathrm{P}_4$.

Reason (R) Nitrogen has more electron gain enthalpy than phosphorus.

Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is true and (R) is false.

Both (A) and (R) are false.

Question 9: Palette 9/9

AIIMS 2018 MCQ

Assertion (A) $\mathrm{NaCl}$ reacts with concentrated $\mathrm{H}_2 \mathrm{SO}_4$ to give colourless fumes with pungent smell. But on adding $\mathrm{MnO}_2$ the fumes become greenish yellow.

Reason (R) $\mathrm{MnO}_2$ oxidises $\mathrm{HCl}$ to chlorine gas which is greenish yellow.

Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(A) is true and (R) is false.

Both (A) and (R) are false.