In birds, some of the vertebrae are fused to form
Options
(a) Synsacrum (b) Symphysis (c) Synkaryon (d) Sympelvis
Correct Answer:
Synsacrum
Explanation:
Synsacrum is a composite bone in birds which consists of […]
Heparin is secreted by
Options
(a) Blood cells (b) Liver cells (c) Kidney (d) Nerve cell
Correct Answer:
Liver cells
Explanation:
Heparin is normally secreted by the mast cells of liver
Cohesive force is experienced between
Options
(a) Magnetic substances (b) Dissimilar molecules (c) Molecules of same substance (d) None of these
Correct Answer:
Molecules of same substance
Explanation:
No explanation available. Be the first […]
In which of the follows decays, the element does not change?
Options
(a) β-decay (b) α-decay (c) γ-decay (d) None of these
Correct Answer:
γ-decay
Explanation:
No explanation available. Be the first to […]
The current flowing through a lamp marked as 50 W and 250 V is
Options
(a) 5A (b) 2.5A (c) 2A (d) 0.2A
Correct Answer:
0.2A
Explanation:
No explanation available. Be the first […]
The first line in Lyman series has wavelength λ. The wavelength of the first line in Balmer series is
Options
(a) 2/9 λ (b) 9/2 λ (c) 5/27 λ (d) 27/5 λ
Correct […]
The frequency of an alternating voltage is 50 cycles per second and its amplitude is 120 V. Then the r.m.s. value of voltage is
Options
(a) 84.8 V (b) 101.3 V (c) 70.7 […]
A pure semiconductor behaves slightly as a conductor at
Options
(a) Room temperature (b) Low temperature (c) High temperature (d) Both b and c
Correct Answer:
Room temperature
Explanation:
No explanation available. Be […]
When a mass m is attached to a spring, it normally extends by 0.2 m. The mass m is given a slight extension and released. Its time period will then be
Options
(a) […]
The mass number of nucleus is always
Options
(a) Equal to atomic number (b) Less than atomic number (c) More than atomic number (d) Either (a) or ( c)
Correct Answer:
Either (Equal […]
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