Surface Chemistry  MCQs

MCQs of Surface Chemistry

Showing 191 to 200 out of 203 Questions
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191.
Which of the following is macromolecular colloid ?
(a) Artificial rubber
(b) Gold sol
(c) Rubber
(d) Gum
Answer:

Option (a)

192.
To which system dispersion and condensation are associated ?
(a) Peptization
(b) Bredig are method
(c) Excessive cooling
(d) Hydrolysis
Answer:

Option (b)

193.
With which Hardy-Schulze rules are associated ?
(a) Adsorption
(b) Sorption
(c) Coagulation
(d) Absorption
Answer:

Option (c)

194.
Which method is used for demulsification ?
(a) Sublimation
(b) Filtration
(c) Distillation
(d) Centrifugation
Answer:

Option (d)

195.
Because of what the colour of sea water appears blue ?
(a) Reflection of blue sky.
(b) Absorption of blue coloured light.
(c) Scattering of light by impurity.
(d) Scattering of blue coloured light by molecules of water.
Answer:

Option (d)

196.
What type of colloid is aluminium hydroxide Al(OH)3 ?
(a) Positively charged
(b) Negatively charged
(c) Neutral
(d) Cannot be determined
Answer:

Option (a)

197.
Which reaction is helped in digestion of fat in stomach (intestine) ?
(a) Peptization
(b) Dilution
(c) Emulsification
(d) All the given
Answer:

Option (a)

198.
What is the range if size of colloid particles ?
(a) 1 Å to 1000Å
(b) 1 nm to 1000 nm
(c) 1 pm to 1000 pm
(d) 1 pc to 1000 pc
Answer:

Option (b)

199.
In which of the following reaction ZSM-5 is useful ?
(a) Toluene from benzene
(b) Petrol from alcohol
(c) Benzene form toluene
(d) Toluene from heptane
Answer:

Option (b)

200.
Which of the following order of the catalytic activity of Cr, V, Fe and Mn metals is correct ?
(a) V < Cr < Mn < Fe
(b) Cr < V < Fe < Mn
(c) V < Fe < Cr < Mn
(d) Fe < Mn < V < Cr
Answer:

Option (a)

Showing 191 to 200 out of 203 Questions
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