Stems perform the function of
Anonymous Quiz
5%
(1) Vegetative propagation ](2) Food storage
2%
Food storage
4%
Conduction of water and minerals
89%
All of these
Ginger is a stem and not a root because it
Anonymous Quiz
31%
Is an underground modification
10%
Stores food
53%
Has nodes and internodes
6%
Grows horizontal to the soil surface
The pH of a 0.01M solution of acetic acid having degree of dissociation 12.5% is
Anonymous Quiz
13%
5.263
48%
2.903
27%
3.723
13%
4.509
Buffer solution is prepared by mixing
Anonymous Quiz
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
Anonymous Quiz
41%
12
30%
13
18%
14
11%
11
Ammonium ion is
Anonymous Quiz
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
Anonymous Quiz
22%
5
19%
7
20%
8
38%
6.98
Which of the following plant does NOT show stem thorns?
Anonymous Quiz
5%
Citrus
73%
Cucumber
6%
Bougainvillea
16%
Both (A) and ( C)
Sclereids are found in all of the following except
Anonymous Quiz
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
Anonymous Quiz
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"?
Anonymous Quiz
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
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
Anonymous Quiz
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