In which of the following respect, the plant hormones differ from enzymes
Options
(a) Required in less quantity (b) They are expended in the process (c) They release some energy (d) None of […]
ECG records
Options
(a) Electric current of the body (b) Potential differences. (c) Pulse rate (d) Quantity of blood pumped per minute
Correct Answer:
Potential differences.
Explanation:
ECG is the record of changes […]
Cytokinin was first synthesized by
Options
(a) Skoog and Miller (b) Letham (c) Bensan and Calvin (d) Thimman and went
Correct Answer:
Letham
Explanation:
Letham first synthesized cytokinin from corn milk.
An antibody is a
Options
(a) Molecule that specifically inactivates an antigen (b) WBC which invades bacteria (c) Secretion of mammalian RBC (d) Component of blood
Correct Answer:
Molecule that specifically inactivates an […]
The electric potential at the surface of an atomic nucleus (z=50) of radius 9.0×10⁻¹³ cm is
Options
(a) 80 volt (b) 8×10⁶ volt (c) 9 volt (d) 9×10⁵ volt
Correct Answer:
8×10⁶ volt
Explanation: […]
The coefficient of mutual inductance of two coils is 6 mH. If the current flowing in one is 2A, the induced e.m.f. in the second coil will be
Options
(a) Zero (b) 3 V […]
One milligram of matter on convertion into energy will give
Options
(a) 9×10⁵ J (b) 9×10¹⁰ J (c) 9×10³ J (d) 90 J
Correct Answer:
9×10¹⁰ J
Explanation:
No explanation available. Be the […]
In some region, gravitational field is zero. The gravitational potential in this region
Options
(a) Must be variable (b) Must be constant (c) Cannot be zero (d) Must be zero
Correct Answer:
Must […]
A meter stick of mass 400 g is pivoted at one end and displaced through an angle 60°. The increase in its potential energy is
Options
(a) 2 J (b) 3 J (c) […]
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