Which one of the following statements is not | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Physical adsorption (physisorption) is characterized by weak van der Waals forces between the adsorbate and the adsorbent. $1$. It is an exothermi

Vedclass · Accepted Answer

Activation energy of physical adsorption is very high

Vedclass · Answer

(C) Physical adsorption (physisorption) is characterized by weak van der Waals forces between the adsorbate and the adsorbent. $1$. It is an exothermic process,so it decreases with an increase in temperature. $2$. It is multilayered due to the non-specific nature of van der Waals forces. $3$. The enthalpy of adsorption is low,typically in the range of $20-40 \ kJ \ mol^{-1}$. $4$. Since it involves weak forces,the activation energy required for physical adsorption is very low,not high. Therefore,the statement that the activation energy of physical adsorption is very high is incorrect.

Which one of the following statements is not correct?

Similar Questions

Let $S=\{x \in(-\pi, \pi): x \neq 0, \pm \frac{\pi}{2}\}$. The sum of all distinct solutions of the equation $\sqrt{3} \sec x+\operatorname{cosec} x+2(\tan x-\cot x)=0$ in the set $S$ is equal to

Two capacitors $C_1$ and $C_2$ are charged to $120\, V$ and $200\, V$ respectively. It is found that by connecting them together,the potential on each one can be made zero. Then:

Which one of the following elements reacts with steam?

$A$ and $B$ are two radioactive substances whose half-lives are $1$ and $2$ years respectively. Initially, $10 \, g$ of $A$ and $1 \, g$ of $B$ are taken. The time (approximate) after which they will have the same quantity remaining is ........... $years$.

The product of the lengths of perpendiculars drawn from any point on the hyperbola $x^2 - 2y^2 - 2 = 0$ to its asymptotes is

Vedclass Test Series

Exam Paper Generator

Online Exam Module