Surface Chemistry  MCQs

MCQs of Surface Chemistry

Showing 131 to 140 out of 203 Questions
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131.
Which of the following catalyst is used for preparation of polyethylene from ethylene by heterogeneous catalysis in modern industrial process ?
(a) Organo Chromium and Titanium
(b) Bismuth
(c) [Rh(CO2)I2]-
(d) Silver
Answer:

Option (a)

132.
Which is the enzyme responsible for the digestion of paper, cloth etc. in animals like cow, buffalo ?
(a) Urease
(b) Cellulase
(c) Silicones
(d) Sucrase
Answer:

Option (b)

133.
Which of the following is not correct with respect to catalyst and reaction ?
(a) [Rh(Cl (Pph3)2] : Hydrogenation
(b) TiCl4 + Al(C2H5)3 : Polymerization
(c) V2O5 : Haber - Bosch process
(d) Nickel : Hydrogenation
Answer:

Option (c)

134.
Which is the wrong statement regarding zeolite ?
(a) It is alumino silicate which has three dimensional network structure.
(b) Some SiO4-4 units are replaced by AlO4-5 and AlO6-9 ions (units) in them.
(c) It is used as cation exchanger.
(d) Due to their open structure, they can accommodate small molecules.
Answer:

Option (b)

135.
Which statement is incorrect about catalyst ?
(a) The effect of catalyst is selective.
(b) It decreases energy barrier.
(c) It decreases the value of equilibrium constant.
(d) It increases the rate of reaction.
Answer:

Option (c)

136.
Select the example of micelle.
(a) S8 sol
(b) NaCl solution
(c) Sodium stearate
(d) Gemstone
Answer:

Option (c)

137.
If the dispersed phase and the dispersion medium are both liquid, what is the name of such colloidal system ?
(a) Gel
(b) Aerosol
(c) Emulsion
(d) Froth (Foam)
Answer:

Option (c)

138.
Select the example of associated colloid.
(a) Protein + water
(b) Detergent + water
(c) Rubber + benzene
(d) As2O3 + Fe(OH) 3
Answer:

Option (b)

139.
By what name is the colloidal system known when the dispersed phase is solid and the dispersion medium is liquid ?
(a) Gel
(b) Emulsion
(c) Sol
(d) Solid sol
Answer:

Option (c)

140.
If the dispersed phase is gas and the dispersion medium is liquid, what is the name of such colloidal system ?
(a) Gel
(b) Emulsion
(c) Aerosol
(d) Froth (Foam)
Answer:

Option (d)

Showing 131 to 140 out of 203 Questions
11 12 13 14 15 16