JEE Main 2021 (Online) 25th February Evening Shift | Surface Chemistry Question 62 | Chemistry | JEE Main - ExamSIDE.com

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1

JEE Main 2021 (Online) 25th February Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Which one of the following statements is FALSE for hydrophilic sols?

A

They do not require electrolytes for stability.

B

The sols cannot be easily coagulated.

C

These sols are reversible in nature.

D

Their viscosity is of the order of that of H₂O.

2

JEE Main 2021 (Online) 25th February Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

In Freundlich adsorption isotherm at moderate pressure, the extent of adsorption $$\left( {{x \over m}} \right)$$ is directly proportional to P^x. The value of x is :

A

$$\infty $$

B

zero

C

1

D

$${{1 \over n}}$$

3

JEE Main 2021 (Online) 24th February Evening Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

Most suitable salt which can be used for efficient clotting of blood will be :

A

Mg(HCO₃)₂

B

NaHCO₃

C

FeCl₃

D

FeSO₄

4

JEE Main 2021 (Online) 24th February Morning Shift

MCQ (Single Correct Answer)

+4

-1

Out of Syllabus

In Freundlich adsorption isotherm, slope of AB line is :

JEE Main 2021 (Online) 24th February Morning Shift Chemistry - Surface Chemistry Question 65 English

JEE Main 2021 (Online) 24th February Morning Shift Chemistry - Surface Chemistry Question 65 English

A

$${1 \over n}$$ with $$\left( {{1 \over n} = 0\,to\,1} \right)$$

B

n with (n, 0.1 to 0.5)

C

$$\log {1 \over n}$$ with $$\left( {n < 1} \right)$$

D

log n with (n > 1)

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