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JEE Main 2 September 2020, Shift 1, Chemistry Q48

Question 48 of 75 in this shift, Chemistry question 23 of 25.

The mass of gas adsorbed,

x

, per unit mass of adsorbate,

m

, was measured at various pressures,

p

. A graph between

\log\frac{x}{m}

and

\log p

gives a straight line with slope equal to 2 and the intercept equal to 0.4771. The value of

\frac{x}{m}

at a pressure of 4 atm is : (Given

\log 3=0.4771

)

Official answer

48.00

NTA final key (Sep 2020).

Chapter: Surface Chemistry
Topic: Adsorption
Idea tested: Freundlich Logarithmic Plot

Same idea in other shifts

Asked 3× in all

3 Aug 2021, Shift 2 · Q58In an adsorption isotherm, it is seen that the graph of $\log\left(\frac{x}{m}\right)$ vs $\log P$ , where $P$ is in atm, is a straight…MediumNumerical value
6 Sep 2020, Shift 2 · Q49For Freundlich adsorption isotherm, a plot of $\log(x/m)$ ( $y$ -axis) and $\log p$ ( $x$ -axis) gives a straight line. The intercept and…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.