ONLINE TEST - Surface Chemistry - EM

This Quiz is a Simple test for +2 Science group students which contain Questions asked from March - 2006 to March - 2017 in Surface Chemistry. Just participate in it and test your skill.

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


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


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


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


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


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


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


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


9. Colloids are purified by
precipitation
Coagulation
Dialysis
Filtration


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


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


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


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


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


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


16. For chemisorption which is wrong?
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
temperature decreases
temperature increases
pressure increases
concentration increases


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


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


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


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


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


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


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


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


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


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


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


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


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


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


32. The Tyndall effect is associated with colloidal particle due to
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
adsorption
absorption
desorption
all of these


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


35. Which one of the following factors is false regarding catalyst?
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?
solid in liquid
liquid in solid
solid in solid
gas in solid


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


38. For selective hydrogenation of alkynes into alkene the catalyst used is
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
proteins
gum
lamp black
synthetic soaps


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


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


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


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


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


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

Thank you for participating in the Quiz & Click "Grade Me" to see your Result.

                                            Tamil Medium