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Chapters
2: p-Block Elements - I
3: p-Block Elements - II
4: Transition and Inner Transition Elements
5: Coordination Chemistry
6: Solid State
7: Chemical Kinetics
8: Ionic Equilibrium
9: Electro Chemistry
▶ 10: Surface Chemistry
11: Hydroxy Compounds and Ethers
12: Carbonyl Compounds and Carboxylic Acids
13: Organic Nitrogen Compounds
14: Biomolecules
15: Chemistry in Everyday Life
![Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 12 TN Board chapter 10 - Surface Chemistry - Shaalaa.com](/images/chemistry-volume-1-and-2-english-class-12-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 12 TN Board chapter 10 - Surface Chemistry")
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Solutions for Chapter 10: Surface Chemistry
Below listed, you can find solutions for Chapter 10 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Chemistry - Volume 1 and 2 [English] Class 12 TN Board.
Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 12 TN Board 10 Surface Chemistry Evaluation [Pages 100 - 103]
Choose the correct answer:
For Freundlich isotherm a graph of log `"x"/"m"` is plotted against log p. The slope of the line and its y-axis intercept respectively corresponds to ____________.
`1/"n", "k"`
`log 1/"n", "k"`
`1/"n", log "k"`
`log 1/"n", log "k"`
Which of the following is incorrect for physisorption?
reversible
increases with increase in temperature
low heat of adsorption
increases with increase in surface area
Which one of the following characteristics are associated with adsorption?
ΔG and ΔH are negative but ΔS is positive.
ΔG and ∆S are negative but ∆H is positive.
∆G is negative but ∆H and ∆S are positive.
∆G, ∆H and ∆S all are negative.
Fog is colloidal solution of ____________.
solid in gas
gas in gas
liquid in gas
gas in liquid
Assertion: Coagulation power of Al3+ is more than Na+.
Reason: greater the valency of the flocculating ion added, greater is its power to cause precipitation.
if both assertion and reason are true and reason is the correct explanation of assertion.
if both assertion and reason are true but reason is not the correct explanation of assertion.
assertion is true but reason is false.
both assertion and reason are false.
Statement: To stop bleeding from an injury, ferric chloride can be applied. Which comment about the statement is justified?
It is not true, ferric chloride is a poison.
It is true, Fe3+ ions coagulate blood which is a negatively charged sol.
It is not true; ferric chloride is ionic and gets into the blood stream.
It is true, coagulation takes place because of formation of negatively charged sol with Cl−.
Hair cream is ____________.
gel
emulsion
solid sol
sol
Which one of the following is correctly matched?
Emulsion - Smoke
Gel - Butter
Foam - Mist
Whipped cream - Sol
The most effective electrolyte for the coagulation of As2S3 Sol is ____________.
NaCl
Ba(NO3)2
K3[Fe(CN)6]
AI3+
Which one of the is not a surfactant?
\[\ce{CH3 - (CH2)15 - \overset{+}{N} - (CH3)2 CH2Br}\]
\[\ce{CH3 - (CH2)15 - NH2}\]
\[\ce{CH3 - (CH2)16 - CH2 OSO^-_2 Na^+}\]
\[\ce{OHC - (CH2)14 - CH2 - COO^- Na^+}\]
The phenomenon observed when a beam of light is passed through a colloidal solution is ____________.
Cataphoresis
Electrophoresis
Coagulation
Tyndall effect
In an electrical field, the particles of a colloidal system move towards the cathode. The coagulation of the same sol is studied using
I. K2SO4
II. Na3PO4
III. K4[Fe(CN)6]
IV. NaCI
Their coagulating power should be
II > I > IV > III
III > II > I > IV
I > II > III > IV
none of these
Collodion is a 4% solution of which one of the following compounds in the alcohol-ether mixture?
Nitroglycerine
Cellulose acetate
Glycoldinitrate
Nitrocellulose
Which one of the following is an example for homogeneous catalysis?
Manufacture of ammonia by Haber’s process
Manufacture of sulphuric acid by contact process
Hydrogenation of oil
Hydrolysis of sucrose in presence of dil HCl
Match the following.
| Column I | Column II |
| A) V2O5 | (i) High density polyethylene |
| B) Ziegler – Natta | (ii) PAN |
| C) Peroxide | (iii) NH3 |
| D) Finely divided – Fe | (iv) H2SO4 |
A B C D (iv) (i) (ii) (iii) A B C D (i) (ii) (iv) (iii) A B C D (ii) (iii) (iv) (i) A B C D (iii) (iv) (ii) (i)
The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As2S3 are given below
(I) (NaCl) = 52
(II) (BaCl2) = 0.69
(III) (MgSO4) = 0.22
The correct order of their coagulating power is:
III > II > I
I > II > III
I > III > II
II > III > I
Adsorption of a gas on solid metal surface is spontaneous and exothermic, then ____________.
∆H increases
∆S increases
∆G increases
∆S decreases
If x is the amount of adsorbate and m is the amount of adsorbent, which of the following relations is not related to adsorption process?
`"x"/"m"` = f(P) at constant T
`"x"/"m"` = f(T) at constant P
P = f(T) at constant `"x"/"m"`
`"x"/"m"` = PT
On which of the following properties does the coagulating power of an ion depend?
Both magnitude and sign of the charge on the ion.
Size of the ion alone.
The magnitude of the charge on the ion alone.
The sign of charge on the ion alone.
Match the following.
| Column I | Column II |
| A) Pure nitrogen | (i) Chlorine |
| B) Haber process | (ii) Sulphuric acid |
| C) Contact process | (iii) Ammonia |
| D) Deacons Process | (iv) sodium azide (or) Barium azide |
Which of the following is the correct option?
A B C D (i) (ii) (iii) (iv) A B C D (ii) (iv) (i) (iii) A B C D (iii) (iv) (ii) (i) A B C D (iv) (iii) (ii) (i)
Short Answer:
Give two important characteristics of physisorption.
Differentiate physisorption and chemisorption.
In case of chemisorption, why adsorption first increases and then decreases with temperature?
Which will be adsorbed more readily on the surface of charcoal and why? NH3 or O2?
Heat of adsorption is greater for chemisorptions than physisorption. Why?
Peptising agent is added to convert precipitate into colloidal solution. Explain with an example.
What happens when a colloidal sol of Fe(OH)3 and As2S3 are mixed?
What is the difference between sol and gel?
Why are lyophillic colloidal sols are more stable than lyophobic colloidal sol?
Addition of Alum purifies water. Why?
What are the factors which influence the adsorption of a gas on a solid?
What are enzymes?
Write a brief note on the mechanism of enzyme catalysis.
What do you mean by activity and selectivity of catalyst?
Describe some features of catalysis by Zeolites.
Give three uses of emulsions.
Why does the bleeding stop by rubbing moist alum?
Why is desorption important for a substance to act as a good catalyst?
Comment on the statement:
Colloid is not a substance but it is a state of substance.
Explain any one method for coagulation.
Write a note on electro osmosis.
Write a note on catalytic poison.
Explain the intermediate compound formation theory of catalysis with an example.
What is the difference between homogeneous and heterogeneous catalysis?
Describe the adsorption theory of catalysis.
Solutions for 10: Surface Chemistry
Samacheer Kalvi solutions for Chemistry - Volume 1 and 2 [English] Class 12 TN Board chapter 10 - Surface Chemistry
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Chemistry - Volume 1 and 2 [English] Class 12 TN Board Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Samacheer Kalvi solutions for Mathematics Chemistry - Volume 1 and 2 [English] Class 12 TN Board Tamil Nadu Board of Secondary Education 10 (Surface Chemistry) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Chemistry - Volume 1 and 2 [English] Class 12 TN Board chapter 10 Surface Chemistry are Adsorption and Absorption, Catalysis, Zeolite Catalysis, Colloid, Dispersion Phase and Dispersion Medium, Emulsions, Various Application of Colloids, Enzyme Catalysis.
Using Samacheer Kalvi Chemistry - Volume 1 and 2 [English] Class 12 TN Board solutions Surface Chemistry exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Chemistry - Volume 1 and 2 [English] Class 12 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
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