JEE Main 2023 (Online) 13th April Morning Shift | Surface Chemistry Question 5 | Chemistry

Four gases A, B, C and D have critical temperatures $$5.3,33.2,126.0$$ and $$154.3 \mathrm{~K}$$ respectively. For their adsorption on a fixed amount of charcoal, the correct order is:

D > C > B > A

C > B > D > A

D > C > A > B

C > D > B > A

JEE Main 2023 (Online) 10th April Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Ferric chloride is applied to stop bleeding because -

$$\mathrm{FeCl}_{3}$$ reacts with the constituents of blood which is a positively charged sol.

Blood absorbs $$\mathrm{FeCl}_{3}$$ and forms a complex.

$$\mathrm{Cl}^{-}$$ ions cause coagulation of blood.

$$\mathrm{Fe}^{3+}$$ ions coagulate blood which is a negatively charged sol.

JEE Main 2023 (Online) 10th April Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

The enthalpy change for the adsorption process and micelle formation respectively are

$$\mathrm{\Delta H_{ads} > 0~and~\Delta H_{mic} < 0}$$

$$\mathrm{\Delta H_{ads} > 0~and~\Delta H_{mic} > 0}$$

$$\mathrm{\Delta H_{ads} < 0~and~\Delta H_{mic} < 0}$$

$$\mathrm{\Delta H_{ads} < 0~and~\Delta H_{mic} > 0}$$

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