December 2, 2018

Surface Chemistry ONLINE MCQ TEST

This Quiz is a Simple test for +2 Science group students which contain Questionsin Surface Chemistry Class XII. Just participate in it and test your skill. ❤❤❤❤❤❤❤

 Set- 1       Set -2      Set- 3       Set -4        Set- 5       Set -6         Set-7       Set -8       Set- 9       Set -10

Set -1

  1. Tyndall effect is not observed in
    2. emulsion
    colloidal solution
    true solution
    suspension

  2. An emulsion is a colloidal solution of
    3. two solids
    two liquids
    two gases
    one solid and one liquid

  3. An example of gel is
    4. paint
    pumice-stone
    milk
    curd

  4. An example of lyophilic colloid is
    5. sulphur in water
    phosphorus in water
    starch
    all of these

  5. Argyrol is
    6. colloidal silver
    colloidal antimony
    colloidal gold
    milk of magnesia

  6. Catalyst used in Deacon's method of manufacture of chlorine is
    7. NO
    CuCl2
    Fe2O3
    Ni

  7. Coconut charcoal has a great capacity of the _____________ of gases
    8. adsorption
    absorption
    desorption
    all of these

  8. Colloidal medicines are more effective because
    9. they are clean
    they are easy to prepare
    they are easily assimilated and adsorbed
    the germs move towards them

  9. Colloids are purified by
    10. precipitation
    Coagulation
    Dialysis
    Filtration

  10. Curd is a colloidal solution of
    11. liquid in liquid
    liquid in solid
    solid in liquid
    solid in solid

  11. Decomposition of hydrogen peroxide is retarded in the presence of
    12. alcohol
    glycerin
    Manganese dioxide, MnO2
    Molybdenum, Mo

  12. Electrophoresis is _____________ property of a colloid
    13. Optical
    Kinetic
    Electrical
    Magnetic

  13. Emulsifying agent is used for
    14. precipitation of an emulsion
    denaturation of an emulsion
    stabilization of an emulsion
    oxidation of an emulsion

  14. Fe(OH)3 colloidal particles adsorb _____________ ions
    15. Fe3+
    Mg2+
    Ca2+
    Cu2+

  15. Fog is a colloidal solution of
    16. liquid in gas
    gas in liquid
    gas in solid
    solid in gas

  16. For chemisorption which is wrong?
    17. It is irreversible
    It requires activation energy
    It forms multi(molecular) layers on absorbate
    Surface compounds are formed

  17. In case of physical adsorption, there is desorption when
    18. temperature decreases
    temperature increases
    pressure increases
    concentration increases

  18. In the reaction between oxalic acid and potassium permanganate, in the presence of dil. H2SO4
    19. K2SO4
    MnSO4
    MnO2
    Mn2O3

  19. Oil soluble dye is mixed with emulsion and emulsion remains colorless then, the emulsion is
    20. O / W
    W / O
    O / O
    W / W

  20. Smoke is a colloidal solution of
    21. gas in solid
    solid in gas
    gas in liquid
     liquid in gas

  21. The blue colour of the sky is due to
    22. Tyndall effect
    Brownian movement
    electrophoresis
    electro-osmosis

  22. The catalyst used for the decomposition of KClO3 is
    23. MnO2
    Cl2
    V2O5
    Pt

  23. The colloid used for stomach disorder is
    24. colloidal silver
    colloidal antimony
    colloidal gold
    Milk of Magnesia

  24. The decomposition of hydrogen peroxide in the presence of colloidal platinum is a / an
    25. positive catalysis
    negative catalysis
    auto-catalysis
    induced catalysis

  25. The emulsifying agent used in O / W emulsion is
    26. long chain alcohols
    lampblack
    protein
    glycerol

  26. The function of FeCl3 in the conversion of Fe(OH)3 precipitate into a colloid is
    27. peptising agent
    emulsifying agent
    reducing agent
    precipitating agent.

  27. The iron catalyst used in the Haber's process is poisoned by
    28. Pt
    H2
    H2S
    As2O3

  28. The migration of colloidal particles under the influence of an electric field is known as
    29. electro-osmosis
    electrolysis / hot dialysis
    electrodialysis
    electrophoresis

  29. The oxidation of sodium sulphite by air is retarded by
    30. MnO2
    H2S
    Alcohol
    As2O3

  30. The platinum catalyst used in the oxidation of SO2 in contact process is poisoned by
    31. Arsenious oxide (As2O3)
    Vanadium pentoxide (V2O5)
    Ferric oxide (Fe2O3)
    Cupric chloride (CuCl2)

  31. The sky looks blue due to
    32. adsorption
    dispersion
    reflection
    scatter blue light

  32. The Tyndall effect is associated with colloidal particle due to
    33. scattering of light
    presence of charge
    absorption / diffusion of light
    reflection of light

  33. Silica gel is utilised for the _____________ of the number of gases
    34. adsorption
    absorption
    desorption
    all of these

  34. Which one is correct factor that explains the increase of rate of reaction by a catalyst?
    35. Shape selectivity
    Particle size
    Increase of free energy
    Lowering of activation energy

  35. Which one of the following factors is false regarding catalyst?
    36. Small quantity is enough
    Initiate the reaction
    Remains unchanged in mass and chemical composition
    Specific in its action

  36. Which type of colloidal is a sol?
    37. solid in liquid
    liquid in solid
    solid in solid
    gas in solid

  37. Ruby glass is a colloidal solution of:
    38. Solid-sol
    Gel
    Emulsion
    Sol

  38. For selective hydrogenation of alkynes into alkene the catalyst used is
    39. Ni at 250°C
    Pt at 25°C
    Pd, partially inactivated by quinoline
    Raney nickel

  39. The principal emulsifying agent for W / O emulsion is
    40. proteins
    gum
    lamp black
    synthetic soaps

  40. Haze is a colloidal solution of
    41. gas in liquid
    liquid in gas
    gas in solid
    solid in gas

  41. The sol used in eye lotion is
    42. Silver sol
    Colloidal Magnesium
    Colloidal gold
    Colloidal antimony

  42. The intermediate compound produced in the formation of SO3 by lead chamber process is
    43. NO
    NO2
    SO2
    O2

  43. The magnitude of gaseous adsorption does not depend upon
    44. temperature
    pressure
    nature of the gas
    amount of the adsorbent

  44. An example of lyophilic colloid is
    45. colloidal solution of metal
    sulphur in water
    gelatin
    Fe(OH)3 colloid

  45. Which one of the following processes does not involve coagulation?
    46. Peptisation
    Formation of delta
    Purification of drinking water using alum
    Tanning of leather using tannin
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