Science GK Objective
1. Which one
of the following is not a property of the X-rays?
(a) They are
deflected by electric fields.
(b) They are
not deflected by magnetic fields.
(c) They have high penetration length in
matter.
(d) Their
wavelength is much smaller than visible light.
2. Which one
of the following is not true about the image formed by a plane mirror?
(a) It is of
the same size as the subject.
(b) It is
laterally inverted.
(c) It is
real image.
(d) It is formed
as far behind the mirror as the object is in front.
3. In a
Periscope, two plane mirrors are kept.
a. Parallel
to each other
b.
Perpendicular to each other
c. at an angle of 60º with each other
d. at an
angle of 45º with each other
4. If the
speed of light in air is 3X10⁸ m /
s, then
the speed of light in a medium
of refractive index 3/2 is?
a. 2x 10⁸ m
/ s
b. 9/4 x 10⁸
m / s
c. 3/2 10⁸ m
/ s
d. 3 x 10⁸ m
/ s
5. Which of
the following types of radiation has the shortest wavelength?
a. Radio
waves
b. visible
light
c. Infrared
(IR)
d. Ultraviolet
(UV)
6. The unit
of the force constant k of a spring is
a. N-m
b. N / m
c. N-m²
d. N / m²
7. Which one
of the following is not an epidemic
disease?
a. Cholera
b. Malaria
c. small pox
d.
Elephantiasis
8. Which one
of the following animals has a three-chambered heart?
a.
Scholiodon
b.
Salamander
c. pigeon
d. Human
Being
9. Which
one of the following is the correct
sequence of events during sexual reproduction in plants?
a. Seeding,
formation of embyro, pollination, fertilization, division of zygote
b. Formation
of embyro, seeding, pollination, fertilization, division of zygote
c.
Pollination, fertilization, division of zygotes, formation of embyro , seeding.
d. seeding , formation of embyro , division of zygote,
pollination, fertilization
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