1.

    Which of the following is NOT a characteristic of lyophilic sols?

    A

    High stability

    B

    High viscosity

    C

    Readily coagulated by electrolytes

    D

    Reversible nature

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Hard
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Colloids, Lyophilic Sols, Lyophobic Sols

    Related Questions

    1.

    Which is the wrong pair?

    (i) Starch solution : sol (ii) Aq. NaCl : true solution (iii) milk : emulsion (iv) Aq. BaSO4{\rm{BaS}}{{\rm{O}}_4} : true solution

    A

    (i)

    B

    (iii)

    C

    (iv)

    D

    (ii)

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :colloids, solutions, suspensions, types of mixtures

    2.

    The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As2S3{\rm{A}}{{\rm{s}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}} are given belowI) (NaCl) = 5.2{\rm{(}}NaCl{\rm{)}}\,{\rm{ = }}\,{\rm{5.2}} II) (BaCl2) = 0.69{\rm{(}}BaC{l_2}{\rm{)}}\,{\rm{ = }}\,0.69 III) (MgSO4) = 0.22{\rm{(}}MgS{O_4}{\rm{)}}\,{\rm{ = }}\,0.22 The correct order of their coagulating power is

    A

    III > I > II

    B

    I > II > III

    C

    II > I > III

    D

    III > II > I

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Application
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Coagulation, Hardy-Schulze rule, Electrolyte concentration

    3.

    Whipped cream is an example of :

    Dispersed phase Dispersion medium

    A

    Liquid gas

    B

    Gas liquid

    C

    Liquid liquid

    D

    Solid liquid

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :dispersed phase, dispersion medium, colloids

    4.

    At CMC (critical micelle concentration), the surfactant molecules undergo

    A

    Dissociation

    B

    Micelle formation

    C

    Both (1) and (2)

    D

    None of these

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Critical Micelle Concentration, Surfactants, Micelle Formation

    5.

    The Brownian movement is due to

    A

    Enthalpy change during the formation of colloids

    B

    Attractive forces between the colloidal particles and the molecules of dispersion medium

    C

    The impact of molecules of the dispersion medium on the colloidal particles

    D

    The movement of positively charged colloidal particle to negatively charged particle

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Brownian motion, colloids, kinetic theory

    6.

    The coagulating power of an electrolyte for blood decreases in the order

    A

    NaCl > KCl > BaCl2 > FeCl3

    B

    FeCl3 > BaCl2 > KCl > NaCl

    C

    BaCl2 > FeCl3 > NaCl > KCl

    D

    KCl > NaCl > FeCl3 > BaCl2

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :coagulation, Hardy-Schulze rule, electrolyte

    7.

    Which one of the following characteristics is associated with adsorption

    A

    Ξ”G\Delta G and Ξ”H\Delta H are negative but Ξ”S\Delta S is positive

    B

    Ξ”G\Delta G and Ξ”H\Delta H are negative but Ξ”S\Delta S is zero

    C

    Ξ”G\Delta G is negative but Ξ”H\Delta H and Ξ”S\Delta S are positive

    D

    Ξ”G, ΔH and ΔS\Delta G,\,\Delta H\,{\rm{and}}\,\Delta S all are negative

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :Gibbs Free Energy, Enthalpy, Entropy, Adsorption

    8.

    Which of the following is an example of associated colloid

    A

    Soap in water

    B

    Protein in water

    C

    Rubber in Benzene

    D

    AgNO3AgN{O_3} in water

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Colloids, Associated Colloids, Types of Colloids

    9.

    The coagulating power of an electrolyte for blood decreases in the order

    A

    Fe3+ > Al3+ > Ca2+ > Na+

    B

    Na+ > Ca2+ > Al3+ > Fe3+

    C

    Al3+ > Fe3+ > Na+ > Ca2+

    D

    Ca2+ > Na+ > Fe3+ > Al3+

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚑ Time Required :2 mins
    πŸ”„Ncert Concepts :coagulation, Hardy-Schulze rule, electrolyte

    10.

    Peptization denotes

    A

    Digestion of food

    B

    Hydrolysis of proteins

    C

    Breaking and dispersion into colloidal state

    D

    Precipitation of solid from colloidal dispersion

    Question Tags
    πŸ“š Subject:Chemistry
    πŸ“‘ Chapter:Surface Chemistry
    🎯Topic:Colloidal State
    πŸŽ“ Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚑ Time Required :1 mins
    πŸ”„Ncert Concepts :Peptization, Colloidal state, Dispersion

    company logo

    NEET Subjects

    Our Bots

    Company