The rate of a reaction that not involve gases is not dependent on
Anonymous Quiz
37%
Pressure
15%
Temperature
20%
Concentration
28%
Catalyst
Inversion of sucrose is
Anonymous Quiz
22%
Zero order reaction
64%
First order reaction
13%
Second order reaction
2%
Third order reaction
The conversion of A → B follows second order kinetics. Doubling the concentration of A will
increase the rate of formation of B by a factor
increase the rate of formation of B by a factor
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12%
1/4
19%
2
22%
1/2
47%
4
The unit of rate constant depends upon
Anonymous Quiz
12%
Rate of reaction
40%
Order of reaction
3%
Molecularity of reaction
45%
All of the above
The specific rate constant of a first order reaction depends on the
Anonymous Quiz
27%
Concentration of the reactant
13%
Concentration of the product
16%
Time
44%
Temperature
Who proposed the theory that "Cells arise only from the pre-existing cells"?
Anonymous Quiz
2%
Mohl
93%
Virchow
4%
Haeckel
2%
Brown
Difference between the prokaryotic and eukaryotic cells in having
Anonymous Quiz
18%
Cell wall
71%
Nuclear membrane
5%
Ribosome
6%
None of these
Which of the following is incorrect?
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3%
Mycoplasma is the smallest cell
6%
Bacteria are 3 to 5 μm in size.
4%
The largest cell is the egg of an ostrich.
87%
Nerve cells are some of the smallest cells.
In prokaryotes, chromatophores are
Anonymous Quiz
35%
Specialized granules responsible for colouration of cells.
5%
Structures responsible for organizing the shape of the organism.
19%
Inclusion bodies lying free inside the cells for carrying out various metabolic activities.
40%
Internal membrane system which becomes extensive and complex in photosynthetic bacteria.
Active transport across biomembrane involves
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22%
Production of ATP
74%
Requirement of energy
3%
Production of toxin
2%
Release of energy
The half-life of a first order reaction is 10 minutes. If initial amount is 0.08mol/litre and
concentration at some instant is 0.01 mol/litre , then t =
concentration at some instant is 0.01 mol/litre , then t =
Anonymous Quiz
21%
10 minutes
50%
30 minutes
18%
20 minutes
11%
40 minutes
Higher order (>3) reactions are rare due to
Anonymous Quiz
65%
Low probability of simultaneous collision of all the reacting species.
21%
Increase in entropy and activation energy as more molecules are involved.
9%
Shifting of equilibrium towards reactants due to elastic collisions.
5%
Loss of active species on collision.
Which of the following compounds will not undergo decomposition on passing electricity
through aqueous solution?
through aqueous solution?
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72%
Sugar
15%
Sodium Chloride
5%
Sodium Bromide
8%
Sodium acetate
Charge required to liberate 11.5 g sodium is
Anonymous Quiz
63%
0.5 F
15%
0.1 F
10%
1.5 F
12%
96500 coulombs
One Faraday of electricity when passed through a solution of copper sulphate deposits
Anonymous Quiz
27%
1 mole of Cu
10%
1 gm atom of Cu
7%
1 molecule of Cu
56%
1gm equivalent of Cu
The best material for study of structure of cell membrane is
Anonymous Quiz
61%
RBC of human
5%
RBC of frog
31%
cheek cell of human
2%
liver cell of rat
.Which of the following will determine the shape of the cells and provides a strong structural support to prevent the bacterium from bursting or collapsing?
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4%
Plasmids
85%
Cell wall
6%
Mesosome
5%
Cell membrane