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Published on: 02/09/2022
QB365 provides a detailed and simple solution for every Possible Creative Questions in Class 12 Chemistry Subject - Surface Chemistry, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 12th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
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1.
Which one of the following does not involve coagulation?
formation of delta
peptisation
clotting of blood
tanning of leather
2.
Which one of the following is correctly matched?
Emulsion - Mayonnaise
Foam - Cream
Solid aerosol - Fog
Solid sol - Pumice stone
3.
Which among the following is not correct with regards to enzyme catalysis?
The rate of enzyme catalysisvaries with pH.
Enzyme catalysisis highly specific in nature
Catalytic activity of enzymes is increased by co-enzymes
Enzymes cannot be inhibited
4.
The intermediate compound formation theory does not explain _______.
action of catalytic poison
specificity of a catalyst
the mechanism of heterogeneous catalysed reactions
both (a) and (c)
5.
Fog is a colloidal solution of _______.
gas in liquid
liquid in gas
gas in solid
solid in gas
6.
Which among the following reactions is an example of auto catalysis?
i) CH3COOC2H5+H2O➝ CH3COOH+C2H5OH
ii) 2H2O➝2H2O+O2
iii) 2SO2+O2➝2SO3
iv) 2AsH3➝2As+3H2
only (i)
(i) and (ii)
(i) and (ii)
(i) and (iv)
7.
Auto catalysis is observed in the reaction given below.
CH3COOC2H5+H2O➝ CH3COOH+C2H5OH
CH3COOC2H5
H2O
CH3COOH
C2H5OH
8.
Which among the following is an example of absorption?
Water on calcium chloride
Water on silica gel
Ammonia gas on charcoal
Hydrogen on finely divided nickel
9.
Which of the following interface cannot be obtained?
solid - solid
solid - liquid
gas - gas
liquid -Iiquid
10.
Adsorption is accompanied by _______.
decrease in free energy
increase in free energy
increase in entropy
both (b) and (c)
11.
Pick the odd one out.
dialysis
electro dialysis
electrophoresis
ultrafiltration
12.
Which of the following is true regarding Freundlich adsorption isotherm equation?
Purely empirical
Valid only over a limited pressure range
The value of constants k and n varies with temperature
All the above
13.
According to Freundlich adsorption isotherm,_______.
\(\frac { x }{ m } =kp\)
\(\frac { m }{ x } ={ (kp) }^{ \frac { 1 }{ n } }\)
\(\frac { x }{ m } ={ kp }^{ \frac { 1 }{ n } }\)
\(\\ \\ \frac { x }{ m } =\frac { k }{ { p }^{ \frac { 1 }{ n } } } \)
14.
Which among the following does not affect adsorption?
surface area of the adsorbent
catalyst
temperature
pressure
15.
Which among the following true regarding adsorption?
(i) Adsorption is a spontaneous process
(ii) Adsorption is always accompanied by increase in free energy.
(iii) Adsorption is an endothermic process
(iv) Adsorption can occur in all interfacial surfaces.
only (ii)
(ii) and (iii)
only (i)
(i) and (iv)
1.
(b)
peptisation
2.
(a)
Emulsion - Mayonnaise
3.
(d)
Enzymes cannot be inhibited
4.
(d)
both (a) and (c)
5.
(d)
solid in gas
6.
(d)
(i) and (iv)
7.
(c)
CH3COOH
8.
(a)
Water on calcium chloride
9.
(c)
gas - gas
10.
(a)
decrease in free energy
11.
(c)
electrophoresis
12.
(d)
All the above
13.
(c)
\(\frac { x }{ m } ={ kp }^{ \frac { 1 }{ n } }\)
14.
(b)
catalyst
15.
(d)
(i) and (iv)
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