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1
JEE Main 2023 (Online) 10th April Evening Shift
MCQ (Single Correct Answer)
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-1
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Ferric chloride is applied to stop bleeding because -

A
$$\mathrm{FeCl}_{3}$$ reacts with the constituents of blood which is a positively charged sol.
B
Blood absorbs $$\mathrm{FeCl}_{3}$$ and forms a complex.
C
$$\mathrm{Cl}^{-}$$ ions cause coagulation of blood.
D
$$\mathrm{Fe}^{3+}$$ ions coagulate blood which is a negatively charged sol.
2
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
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The enthalpy change for the adsorption process and micelle formation respectively are

A
$$\mathrm{\Delta H_{ads} > 0~and~\Delta H_{mic} < 0}$$
B
$$\mathrm{\Delta H_{ads} > 0~and~\Delta H_{mic} > 0}$$
C
$$\mathrm{\Delta H_{ads} < 0~and~\Delta H_{mic} < 0}$$
D
$$\mathrm{\Delta H_{ads} < 0~and~\Delta H_{mic} > 0}$$
3
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
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Which of the following represent the Freundlich adsorption isotherms?

JEE Main 2023 (Online) 8th April Morning Shift Chemistry - Surface Chemistry Question 5 English 1JEE Main 2023 (Online) 8th April Morning Shift Chemistry - Surface Chemistry Question 5 English 2

Choose the correct answer from the options given below:

A
B, C, D only
B
A, B only
C
A, B, D only
D
A, C, D only
4
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
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In figure, a straight line is given for Freundrich Adsorption ($$y=3x+2.505$$). The value of $$\frac{1}{n}$$ and $$\log \mathrm{K}$$ are respectively.

JEE Main 2023 (Online) 1st February Evening Shift Chemistry - Surface Chemistry Question 26 English

A
0.3 and log 2.505
B
3 and 2.505
C
3 and 0.7033
D
0.3 and 0.7033
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