JEE Main 2016 (Online) 9th April Morning Slot | Surface Chemistry Question 103 | Chemistry

A particular adsorption process has the following characteristics : (i) It arises due to van der Waals forces and (ii) it is reversible. Identify the correct statement that describes the above adsorption process :

Enthalpy of adsorption is greater than 100 kJ mol⁻¹.

Energy of activation is low.

Adsorption is monolayer.

Adsorption increases with increase in temperature.

JEE Main 2016 (Offline)

MCQ (Single Correct Answer)

-1

Out of Syllabus

For a linear plot of log (x/m) versus log p in a Freundlich adsorption isotherm, which of the following statements is correct ? (k and n are constants)

Both k and 1/n appear in the slope term.

1/n appears as the intercept.

Only 1/n appears as the slope

log (1/n) appears as the intercept.

JEE Main 2015 (Offline)

MCQ (Single Correct Answer)

-1

Out of Syllabus

3 g of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is:

36 mg

42 mg

54 mg

18 mg

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

Out of Syllabus

The coagulating power of electrolytes having ions Na⁺, Al³⁺ and Ba²⁺ for arsenic sulphide sol increases in the order:

Na⁺ < Ba²⁺ < Al³⁺

Al³⁺ < Ba²⁺ < Na⁺

Ba²⁺ < Na⁺ < Al³⁺