Surface Chemistry  MCQs

MCQs of Surface Chemistry

Showing 81 to 90 out of 203 Questions
6 7 8 9 10 11
81.
The minimum amount of the electrolyte required for complete coagulation of colloid is _____
(a) coagulation value
(b) critical value
(c) freezing value
(d) craft value
Answer:

Option (a)

82.
By which test type of emulsion is decided ?
(a) Dye test
(b) Fractional distillation
(c) Layer separation
(d) Solubility test
Answer:

Option (a)

83.
The work of zymase is _____
(a) fluctose from soluble sugar
(b) sugal and dexfran from starch
(c) sugar from starch
(d) alcohol and  CO2 from glucose
Answer:

Option (d)

84.
The surface tension of lyophilic sol is ______
(a) more than H2O
(b) less than H2O
(c) equal to H2O
(d) more or less than H2O
Answer:

Option (b)

85.
Purification of blood is carried out by
(a) coagulation
(b) dialysis
(c) electroosmosis
(d) ultrafiltration
Answer:

Option (b)

86.
Which of the following is used as solid adsorbent in adsorption chromatography ?
(a) Silica
(b) Clay
(c) Aluminium sulphate
(d) Calcium sulphate
Answer:

Option (d)

87.
At isoelectric point the colloid _____ .
(a) stabilizes
(b) peptizises
(c) does not possess electrical charge
(d) cannot be coagulated
Answer:

Option (c)

88.
Which of the following gases will adsorbed less on solid adsorbent ?
(a) O2
(b) NH3
(c) HCl
(d) CO
Answer:

Option (a)

89.
Which of the following is not used as an adsorbent ?
(a) Charcoal
(b) Clay
(c) Silica gel
(d) Vanishing cream
Answer:

Option (d)

90.
Which of the following phenomenon is opposite to the phenomenon of adsorption ?
(a) Absorption
(b) Sorption
(c) Desorption
(d) Corrosion
Answer:

Option (c)

Showing 81 to 90 out of 203 Questions
6 7 8 9 10 11