AIIMS 2018 | p-Block Elements Question 7 | Chemistry

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

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

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

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

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

AIIMS 2018

MCQ (Single Correct Answer)

-0.33

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.

AIIMS 2018

MCQ (Single Correct Answer)

-0.33

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.

AIIMS Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Evolution