Buffer solution is prepared by mixing
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7%
Strong acid + its salt of strong base
17%
Weak acid + its salt of weak base
21%
Strong acid + its salt of weak base
55%
Weak acid + its salt of strong base
The pH of a solution containing 100 mg ofsodium hydroxide in 250 mL of water is
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41%
12
30%
13
18%
14
11%
11
Ammonium ion is
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9%
Neither an acid nor base
17%
Both an acid and a base
58%
A conjugate acid
17%
A conjugate base
If a 0.00001 molar solution of HCl is dilutedthousand folds the pH of the resulting solution will
be
be
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22%
5
19%
7
20%
8
38%
6.98
Which of the following plant does NOT show stem thorns?
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5%
Citrus
73%
Cucumber
6%
Bougainvillea
16%
Both (A) and ( C)
Sclereids are found in all of the following except
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8%
pulp of guava
11%
leaves of tea
75%
young stem
7%
walls of nuts
All of the following are together called as stomatal apparatus, except
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7%
Guard cells
13%
Subsidiary cells
70%
Epidermal cells
10%
Stomatal aperture
Who proposed the theory that "Cells arise only from the pre-existing cells"?
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0%
Mohl
94%
Virchow
3%
Haeckel
2%
Brown
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
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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
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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
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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
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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
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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.