Download App

Surface Chemistry Chemistry - Surface Chemistry

Jharkhand Board (JAC) - STD 12 Science - Chemistry (Jharkhand - English Medium). 399 questions in this chapter.

Question types

Surface Chemistry question types

399 questions across 7 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.

399
Questions
7
Question groups
5
Question types
Sample Questions

Surface Chemistry questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 2M.C.Q (1 Marks)1 Mark
Which of the following statements regarding catalyst is not true?
  • A
    A catalyst remains uncharged in composition and quantity at the end of the reaction.
  • ✓
    A catalyst can initiate a reaction.
  • C
    A catalyst does not alter the equilibrium in a reversible reaction.
  • D
    Catalysts are sometimes very specific in respect of reaction.

Answer: B.

View full solution →
Q 4M.C.Q (1 Marks)1 Mark
The stabilizer used in the preparation of colloidal sol of mercury and sulphur is:
  • A
    An ammonium salt.
  • B
    A citrate.
  • C
    $\text{KOH}.$
  • ✓
    Both $A$ and $B.$

Answer: D.

View full solution →
Q 5M.C.Q (1 Marks)1 Mark
An example of autocatalytic reaction is:
  • ✓
    Decomposition of nitroglycerine.
  • B
    Thermal decomposition of $\mathrm{KClO}_3$ and $\mathrm{MnO}_2$ mixture.
  • C
    Breakdown of ${ }^{14} \mathrm{C}_6$
  • D
    Hydrogenation of vegetable oil using nickel catalysts.

Answer: A.

View full solution →
Q 6Assertion (A) & Reason (B) MCQ1 Mark
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Colloidal sols scatter light while true solutions do not.
Reason: The particles in the colloidal sol move much slower than that of the true solution.
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • ✓
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

Answer: B.

View full solution →
Q 7Assertion (A) & Reason (B) MCQ1 Mark
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Colloidal particles show Brownian movement.
Reason: Brownian movement arises because of the impact of the molecules of the dispersion medium with the colloidal particles.
  • ✓
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

Answer: A.

View full solution →
Q 8Assertion (A) & Reason (B) MCQ1 Mark
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Lyophilic sols are prepared by directly mixing the substance with the dispersion medium.
Reason: Lyophobic sols can not be prepared by simply mixing the substance with the dispersion medium.
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • ✓
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

Answer: B.

View full solution →
Q 9Assertion (A) & Reason (B) MCQ1 Mark
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: The molecules on the surface have lesser energy than the molecules inside.
Reason: During adsorption, the surface of solid is in a state of strain.
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • ✓
    Assertion is wrong statement but reason is correct statement.

Answer: D.

View full solution →
Q 10Assertion (A) & Reason (B) MCQ1 Mark
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: A colloidal sol of $\ce{As_2S_3}$ is coagulated faster by $\ce{0.1M\ BaCl_2}$ than by $\ce{0.1M\ NaCl}.$
Reason: $\ce{BaCl_2}$ gives double the number of $Cl^-$ ions than $\ce{NaCl.}$
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • ✓
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

Answer: B.

View full solution →
Q 213 Marks Question3 Marks
  1. In which of the following does adsorption take place and why?
  1. Silica gel placed in the atmosphere saturated with water.
  2. Anhydrous $CaCl_2$ placed in the atmosphere saturated with water.
  1. How does $BF_3$ act as a catalyst in industrial process?
  2. Give an example of shape-selective catalysis.
View full solution →
Q 223 Marks Question3 Marks
  1. What are micelles? How do they differ from ordinary colloidal particles? Give two examples of micelles forming substances.
  2. State Hardy-Schulze rule.
View full solution →
Q 243 Marks Question3 Marks
Write one difference in each of the following:
  1. Write the dispersed phase and dispersion medium of milk.
  2. Write one similarity between physisorption and chemisorption.
  3. Write the chemical method by which $Fe(OH)_3$ sol is prepared from $FeCl_3.$
View full solution →
Q 253 Marks Question3 Marks
Define adsorption with an example. Why is adsorption exothermic in nature? Write the types of adsorption based on the nature of forces between adsorbate and adsorbent.
View full solution →
Q 26Case study (4 Marks)4 Marks
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Colloidal sols scatter light while true solutions do not.
Reason: The particles in the colloidal sol move much slower than that of the true solution.
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • ✓
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

Answer: B.

View full solution →
Q 27Case study (4 Marks)4 Marks
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Colloidal particles show Brownian movement.
Reason: Brownian movement arises because of the impact of the molecules of the dispersion medium with the colloidal particles.
  • ✓
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

Answer: A.

View full solution →
Q 28Case study (4 Marks)4 Marks
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: Lyophilic sols are prepared by directly mixing the substance with the dispersion medium.
Reason: Lyophobic sols can not be prepared by simply mixing the substance with the dispersion medium.
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • ✓
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

Answer: B.

View full solution →
Q 29Case study (4 Marks)4 Marks
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: The molecules on the surface have lesser energy than the molecules inside.
Reason: During adsorption, the surface of solid is in a state of strain.
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • B
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • ✓
    Assertion is wrong statement but reason is correct statement.

Answer: D.

View full solution →
Q 30Case study (4 Marks)4 Marks
In these questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.
Assertion: A colloidal sol of $\ce{As_2S_3}$ is coagulated faster by $\ce{0.1M\ BaCl_2}$ than by $\ce{0.1M NaCl.}$
Reason: $BaCl_2$ gives double the number of $Cl^-$ ions than $\ce{NaCl.}$
  • A
    Assertion and reason both are correct statements and reason is correct explanation for assertion.
  • ✓
    Assertion and reason both are correct statements but reason is not correct explanation for assertion.
  • C
    Assertion is correct statement but reason is wrong statement.
  • D
    Assertion is wrong statement but reason is correct statement.

Answer: B.

View full solution →
Q 315 Marks Questions5 Marks
Method of formation of solution is given in Column I. Match it with the type of solution given in Column II.
  Column I   Column II
(i) Sulphur vapours passed through cold water. (a) Normal electrolyte solution.
(ii) Soap mixed with water above critical micelle concentration. (b) Molecular colloids.
(iii) White of egg whipped with water. (c) Associated colloid.
(iv) Soap mixed with water below critical micelle concentration. (d) Macro molecular colloids.
View full solution →
Q 325 Marks Questions5 Marks
Match the items of Column I and Column II.
  Column I   Column II
(i) Butter. (a) Dispersion of liquid in liquid.
(ii) Pumice stone. (b) Dispersion of solid in liquid.
(iii) Milk. (c) Dispersion of gas in solid.
(iv) Paints. (d) Dispersion of liquid in solid.
View full solution →
Q 335 Marks Questions5 Marks
Match the items given in Column $I$ and Column $II.$
  Column $I$   Column $II$
$(i)$ Protective colloid. $(a)$ $FeCl_3 + NaOH.$
$(ii)$ Liquid - liquid colloid. $(b)$ Lyophilic colloids.
$(iii)$ Positively charged colloid. $(c)$ Emulsion.
$(iv)$ Negatively charged colloid. $(d)$ $FeCl_3 +$ hot water.
View full solution →
Q 345 Marks Questions5 Marks
Match the statement given in Column I with the phenomenon given in Column II.
  Column I   Column II
(i) Dispersion medium moves in an electric field. (a) Osmosis.
(ii) Solvent molecules pass through semi permeable membrane towards solvent side. (b) Electrophoresis.
(iii) Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes. (c) Electroosmosis.
(iv) Solvent molecules pass through semi permeable membranes towards solution side. (d) Reverse osmosis.
View full solution →
Q 355 Marks Questions5 Marks
Match the types of colloidal systems given in Column I with the name given in Column II.
  Column I   Column II
(i) Solid in liquid. (a) Foam.
(ii) Liquid in solid. (b) Sol.
(iii) Liquid in liquid. (c) Gel.
(iv) Gas in liquid. (d) Emulsion.
View full solution →
Browse all question groups ↑

Generate a Surface Chemistry paper free

Pick question groups from the list above, set marks and difficulty, and export a branded PDF with step-by-step answer keys. First 3 chapters free — no signup.

Download App
Generate Paper FreeAll Chemistry chapters