GENERAL SCIENCE #5 MCQ
1. What
kind of image does a stereoscopic camera produces?
(a) Three dimensional
(b) Three dimensional in appearance
(c) Magnified
(d) Coloured
Answer:
(b)
2. In
a cyclic process
(a) the work done does not depend on heat
(b) the work done by the gas is equal to heat given to
system
(c) internal energy of system increases
(d) the work done is zero
Answer:
(b)
3. If
half of the body of a lens is covered with black-paper the image produced by
the lens will
(a) disappear
(b) have its size reduced to half
(c) have its intensity reduced to half
(d) None of the above
Answer:
(c)
4. What
is the SI unit of acceleration?
(a) metre/second
(b) Second
(c) Joule
(d) Kelvin
Answer:
(a)
5. Focal
length of the eye-lens which enables us to see the object at varying distances,
is controlled and changed by which of the following?
(a) Choroid
(b) Ciliary muscles
(c) Vitreous humour
(d) Retina
Answer:
(b)
6. A
person standing in front of which type of mirror finds his image thinner but
with normal height?
(a) Concave and spherical
(b) Convex and cylindrical with axis vertical
(c) Convex and cylindrical with axis horizontal
(d) Convex and spherical
Answer:
(a)
7. By
which of the following device, the image of an object formed is always virtual
and small?
(a) Concave lens
(b) Convex lens
(c) Glass plate
(d) Concave mirror
Answer:
(a)
8. What
happens if the pressure of a gas is doubled at a fixed temperature?
(a) The volume will be doubled
(b) The volume would be increased four times
(c) The volume would be halved
(d) The volume will remain unchanged
Answer:
(c)
9. Torr
is the unit of which of the following?
(a) Viscosity
(b) Pressure
(c) Temperature
(d) Volume
Answer:
(b)
10. Many
salts absorb water from the atmosphere. This property is called which of the
following?
(a) Dehydration
(b) Hydration
(c) Deliquescence
(d) None of the above
Answer:
(c)
11. Air
contains which of the following?
(a) Only oxygen gas
(b) Only carbon dioxide gas
(c) Only oxygen and nitrogen gas
(d) Oxygen, nitrogen, carbon dioxide, water vapours and few
inert gases
Answer:
(d)
12. One
molecule means which of the following?
(a) 6.023 x 10-23 atoms of the element
(b) 6.023 x 1023 atoms of the element
(c) 1.6 x 10-19 atoms of the element
(d) None of the above
Answer:
(b)
13. Which
of the following is a non-metal which exists in liquid state at room
temperature?
(a) Iodine
(b) Mercury
(c) Chlorine
(d) Bromine
Answer:
(d)
14. Plant
cells are different to animal cells in not having which of the following?
(a) Cell wall
(b) Dicytosome
(c) Plastids
(d) Lysosome
Answer:
(d)
15. The
pitch of the voice at women is in general which of the following?
(a) Marginally lower than that of men
(b) The same as that of men
(c) Higher than that of men
(d) Much lower than that of men
Answer:
(c)
16. Blood
is formed in the human adult by which of the following?
(a) Spleen
(b) Yellow bone marrow
(c) Red bone marrow
(d) Heart
Answer:
(c)
17. What
are milk teeth?
(a) Teeth which do not grow at all
(b) Teeth which grow twice in life
(c) Teeth which are permanent
(d) Teeth which are temporary
Answer:
(d)
18. Which
of the following parts of the plant is used for the extraction of opium?
(a) Capsules
(b) Roots
(c) Flowers
(d) Leaves
Answer:
(a)
19. Which
muscle type is moved voluntarily?
(a) Smooth
(b) Skeletal
(c) Cardiac
(d) All of the above
Answer:
(b)
20. Which
one of the following is a modified stem?
(a) Sweet potato
(b) Carrot
(c) Coconut
(d) Potato
Answer:
(d)
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