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1
JEE Main 2022 (Online) 25th June Morning Shift
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Using very little soap while washing clothes, does not serve the purpose of cleaning of clothes, because :

A
soap particles remain floating in water as ions.
B
the hydrophobic part of soap is not able to take away grease.
C
the micelles are not formed due to concentration of soap, below its CMC value.
D
colloidal structure of soap in water is completely disturbed.
2
JEE Main 2022 (Online) 24th June Morning Shift
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Given below are two statements :

Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.

Statement II : For stabilisation of an emulsion, excess of electrolyte is added.

In the light of the above statements, choose the most appropriate answer from the options given below :

A
Both Statement I and Statement II are correct.
B
Both Statement I and Statement II are incorrect.
C
Statement I is correct but Statement II is incorrect.
D
Statement I is incorrect but Statement II is correct.
3
JEE Main 2021 (Online) 1st September Evening Shift
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Match List - I with List - II :

JEE Main 2021 (Online) 1st September Evening Shift Chemistry - Surface Chemistry Question 46 English
Choose the most appropriate answer from the options given below.
A
(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
B
(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
C
(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
D
(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
4
JEE Main 2021 (Online) 31st August Morning Shift
MCQ (Single Correct Answer)
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Select the graph that correctly describes the adsorption isotherms at two temperatures T1, and T2 (T1 > T2) for a gas :

(x - mass of the gas absorbed ; m - mass of adsorbent ; P - pressure)
A
JEE Main 2021 (Online) 31st August Morning Shift Chemistry - Surface Chemistry Question 48 English Option 1
B
JEE Main 2021 (Online) 31st August Morning Shift Chemistry - Surface Chemistry Question 48 English Option 2
C
JEE Main 2021 (Online) 31st August Morning Shift Chemistry - Surface Chemistry Question 48 English Option 3
D
JEE Main 2021 (Online) 31st August Morning Shift Chemistry - Surface Chemistry Question 48 English Option 4
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