The correct statements among the following about solid catalysts is -

a. Same reactants may give different products by using different catalysts
b. Catalyst does not change ∆ H of reaction
c. Catalyst is required in large quantities to catalyse reactions
d. Catalytic activity of a solid catalyst does not depend upon the strength of chemisorption


1. a and b
2. b and c
3. c and d
4. a and d

Subtopic:  Catalyst |
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The process that does not occur at the interface of phases is :

1.  Crystallisation

2.  Heterogeneous catalysis

3.  Homogeneous catalysis

4.  Corrosion

 

 
Subtopic:  Catalyst |
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The interface that cannot be obtained is 

1. Liquid-liquid

2. Solid-liquid

3. Liquid-gas

4. Gas-gas

 
Subtopic:  Adsorption and Absorption | Catalyst | Lyophilic & Lyophobic Sol |
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The correct statement regarding changes in the catalyst during a reaction is -

a.  Physical

b.  Qualitative

c.  Chemical

d.  Quantitative


1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)

Subtopic:  Catalyst |
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In which of the following reactions heterogeneous catalysis is involved ? 

(i)  2SO2(g)+O2(g)NO(g)2SO3(g)

(ii)  2SO2(g)Pt(s)2SO3(g)(iii)  N2(g)+ 3 H2(g) Fe(s)2NH2(g)(iv)  CH3COOCH3(l)+H2O(l)CH(l)CH3COOCH(aq)+CH3OH(aq)

1.  (ii), (iii)

2.  (ii), (iii) and (iv)

3.  (i), (ii) and (iii)

4.  (iv)

Subtopic:  Catalyst |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology