GENERAL SCIENCE #4 MCQ
1. Why
does a scooter driver over an oily road generally slip?
(a) Friction between tyres and road decreases
(b) Friction between tyres and road increases
(c) Inertia of the scooter tyres increases
(d) Inertia of the scooter tyres decreases
Answer:
(a)
2. A
man cannot see an object distinctly at a distance less than 1 m. He is
suffering from which of the following?
(a) Distortion
(b) Myopia
(c) Astigmatism
(d) Hypermetropia
Answer:
(d)
3.
Which one of the following optical instruments produce a virtual image?
(a) A simple magnifier
(b) An ordinary single lens reflex camera
(c) Movie projector
(d) None of the above
Answer:
(a)
4. How
many images can a man see if he stands between two plane mirrors inclined at an
angle of 60°?
(a) 4
(b) 5
(c) 6
(d) 7
Answer:
(b)
5.
Which of the following is a scalar quantity?
(a) Electric field
(b) Moment of a force
(c) Acceleration
(d) Power
Answer:
(d)
6.
Panchromatic photographic film is sensitive to which of the following?
(a) Light of violet colour
(b) Light of red colour
(c) Light of yellow colour
(d) The entire region of the visible spectrum
Answer:
(d)
7. Air
is blown over a hot body to cool it. This would increase the rate of heat loss
by which of the following?
(a) Radiation and convection
(b) Conduction and convection
(c) Convection
(d) Conduction
Answer:
(c)
8.
Cheese is an example of which of the following?
(a) Foam
(b) Sol
(c) Gel
(d) Emulsion
Answer:
(c)
9.
Common salt is obtained from the oceans by which of the following methods?
(a) Filtration
(b) Evaporation
(c) Crystallisation
(d) Sublimation
Answer:
(b)
10. Scattering
of light takes place in which of the following?
(a) Electroplating
(b) Electrolytic solution
(c) Colloidal solutions
(d) Electrodialysis
Answer:
(c)
11. Salt
sodium is a mixture of which of the following?
(a) Sodium chloride in water
(b) Common salt and bromine
(c) Bromine in water
(d) None of the above
Answer:
(a)
12.
Kinetic energy of molecules is highest in which of the following?
(a) Liquid
(b) Solid
(c) Gas
(d) None of the above
Answer:
(c)
13.
Ice-cream is an example of which of the following?
(a) Suspension
(b) Emulsion
(c) True solution
(d) Colloid
Answer:
(b)
14.
What is called the method of separating complex mixtures based on their rates
of absorption?
(a) Occlusion
(b) Distillation
(c) Sedimentation
(d) Chromatography
Answer:
(d)
15.
What is the number of floating ribs in the human body?
(a) 5 pairs
(b) 3 pairs
(c) 6 pairs
(d) 2 pairs
Answer:
(d)
16.
The colour of the human skin is due to which of the following?
(a) Myelin
(b) Melanin
(c) Myoglobin
(d) Keratin
Answer:
(b)
17.
What is the outermost layer of the skin called?
(a) Epidermis
(b) Fibre
(c) Mucus
(d) None of the above
Answer:
(a)
18. Which
of the following is the hardest part in human body?
(a) Chitin
(b) Keratin
(c) Dentine
(d) Enamel
Answer:
(d)
19. Which
of the following is not the part of nervous system?
(a) Nerves
(b) Brain
(c) Blood
(d) Spinal cord
Answer:
(c)
20.
Which is the protein, present in human blood?
(a) Haemoglobin
(b) Myosin
(c) Insulin
(d) Trypsin
Answer:
(a)
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