Which of the following salt solutions would coagulate the colloid soloution formed when FeCl 3 is added to NaOH solution, at the fastest rate?

10 mL of 0 . 2 mol dm - 3 AlCl 3

10 mL of 0 . 1 mol dm - 3 Na 2 SO 4

10 mL of 0 . 1 mol dm - 3 Ca 3 PO 4 2

10 mL of 0 . 15 mol dm - 3 CaCl 2

EASY

JEE Main

IMPORTANT

Earn 100

Match the following:

(i) Foam (a) smoke

(ii) Gel (b) cell fluid

(iii) Aerosol (c) jellies

(iv) Emulsion (d) rubber

(e) froth

(f) milk

100% studentsanswered this correctly

Important Questions on Surface Chemistry

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 11 - Surface Chemistry>JEE Main - 3rd April 2016>Q 25

For a linear plot of

\log (\frac{x}{m})

versus

\log p

in a Freundlich adsorption isotherm, which of the following statements is correct? (

k

and

n

are constants)

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 11 - Surface Chemistry>JEE Main - 31 August 2021 Shift 2>Q 26

{CH}_{4}

is adsorbed on

1 g

charcoal at

0 ° C

following the Freundlich adsorption isotherm.

10.0 mL

{CH}_{4}

is adsorbed at

100 mm

Hg,

whereas

15.0 mL

is adsorbed at

200 mm

Hg .

The volume of

{CH}_{4}

adsorbed at

300 mm

Hg

10^{x} mL .

The value of

x

is _________

\times 10^{- 2} .

(Nearest integer)
[Use

\log_{10} 2 = 0.3010, \log_{10} 3 = 0.4771

]

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 11 - Surface Chemistry>JEE Main - 31 August 2021 Shift 1>Q 27

Select the graph that correctly describes the adsorption isotherms at two temperatures

T_{1}

and

T_{2} (T_{1} > T_{2})

for a gas :
(

x -

mass of the gas adsorbed

m -

- mass of adsorbent

P -

pressure )

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 11 - Surface Chemistry>JEE Main - 3 September 2020 Shift 2>Q 28

An ionic micelle is formed on the addition of:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 11 - Surface Chemistry>JEE Main - 3 September 2020 Shift 1>Q 29

Tyndall effect is observed when :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 11 - Surface Chemistry>JEE Main - 2nd April 2017>Q 30

The Tyndall effect is observed only when the following conditions are satisfied,

(i)

The diameter of the dispersed particles is much smaller than the wavelength of the light used.

(ii)

The diameter of the dispersed particle is not much smaller than the wavelength of the light used.

(iii)

The refractive indices of the dispersed phase and dispersion medium are almost similar in magnitude.

(iv)

The refractive indices of the dispersed phase and dispersion medium differ greatly in magnitude.

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 11 - Surface Chemistry>JEE Main - 27 July 2021 Shift 1>Q 31

${CO}_{2}$ gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal, the mass of ${CO}_{2}$ adsorbed becomes $64$ times when the pressure of ${CO}_{2}$ is doubled.

The value of $n$ in the Freundlich isotherm equation is $____$ $\times 10^{2} .$ (Round off to the Nearest Integer)

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 11 - Surface Chemistry>JEE Main - 27 August 2021 Shift 2>Q 32

Lyophilic sols are more stable than lyophobic sols because:

(i) Foam	(a) smoke
(ii) Gel	(b) cell fluid
(iii) Aerosol	(c) jellies
(iv) Emulsion	(d) rubber
	(e) froth
	(f) milk

Match the following: (i) Foam (a) smoke (ii) Gel (b) cell fluid (iii) Aerosol (c) jellies (iv) Emulsion (d) rubber (e) froth (f) milk

Important Questions on Surface Chemistry

Learn and Prepare for any exam you want !

Match the following:

(i) Foam (a) smoke

(ii) Gel (b) cell fluid

(iii) Aerosol (c) jellies

(iv) Emulsion (d) rubber

(e) froth

(f) milk