NTS, PPSC, FPSC everyday science mcqs set 11. The basic knowledge of science and technology is essential to learn every human beings. The current era is the modern and educated era. Almost everyday new technologies introduced in all over the world. We daily hear the news of New cellphones, laptops, space discoveries, new weapons and new inventions in health sectors. All the new things based on the basic science rules. If we know those rules we can quickly understand and describe the new technologies. Following set of mcqs includes the mcqs related to modern technologies which we used daily in our life but did not know their working principles.
Everyday Science MCQs with Answers Set 11
1. The carrier waves used for the radio transmission have frequency upto_____?A). 15 KHz
B). 30 KHz
C). 90 KHz
D). 150 KHz
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2. Video camera is used to convert_____?
A). Heat into x-rays
B). Sound into electrical signals
C). Electrical signals into pictures
D). Picture into electrical signals
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3. The range of a 100 meter high TV transmitter ariel is about_____?
A). 10 km
B). 20 km
C). 30 km
D). 50 km
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4. The waves used for sending signals to the satellite from ground station are_____?
A). X-rays
B). Sound waves
C). Micro waves
D). Ultraviolet rays
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5. A mobile phone sends and receives messages through_____?
A). Sound waves
B). Micro waves
C). Ultraviolet waves
D). Radio waves
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6. The procedure of crushing the gallstones and kidney stone by laser is called_____?
A). MRI
B). Kidney surgery
C). Angiography
D). Lithotropsy
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7. Three dimensional image formed by laser is called______?
A). Photograph
B). Hologram
C). Two dimensional sketch
D). Photocopy
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8. Optical fibers are the fine strands of_____?
A). Glass
B). Iron
C). Calcium
D). Mercury
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9. The satellites which revolve in such an orbit, so that they move with earth rotation are called_____?
A). Geo satellites
B). Stationary satellites
C). Earth-space satellites
D). Geo-stationary satellites
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10. Radar transmits short pulses of high frequency called_____?
A). Infrared waves
B). Radio waves
C). Ultraviolet waves
D). Sound waves
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11. The ray with high penetrating power is_____?
A). a-rays
B). 1-rays
C). y-rays
D). x-rays
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12. The penetration of x-rays through an object depends upon the object's_____?
A). Density
B). Shape
C). Pressure
D). Size
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13. To find the hidden secrets under the water, the • ships and submarines use the_____?
A). Radiation system
B). Sonar system
C). X-ray system
D). Radiation system
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14. Recording of brain waves from outer surface of head 'is called______?
A). E C.G.
B). MRI
C). C.T. scan
D). E.E.G.
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15. Ball bearings are used in cycles, scooters to _____?
A). Reduce the friction between the wheel and the axle
B). Increase the friction between the wheel and the axle
C). Reduce the friction between ground and the wheel
D). None of these
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16. Steel is more elastic than rubber because______?
A). Its density is high
B). It is a metal
C). Ratio of stress to strain is more
D). Ratio of stress to strain is less
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17. What does make the blood look red?
A). Red corpuscles
B). Hemoglobin
C). Plasma
D). Certain secretions
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18. In railway tracks, a small gap is left between the rails______?
A). To allow for the expansion during heat
B). To save the cost of metal
C). To permit the shrinkage of metal
D). None of the above
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19. Friction can be reduced by changing over from_____?
A). Sliding to rolling
B). Rolling to sliding
C). Potential energy to kinetic energy
D). Dynamic to static
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20. Ice blocks are covered with sawdust_______?
A). To prevent the dust from collecting on the ice
B). Because ice being cold cannot be lifted with bare hands
C). To provide necessary insulation from heat
D). None of the above
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21. The acid used in a car battery is_____?
A). Hydroelectric acid
B). Nitric acid
C). Sulphuric acid
D). Carbonic acid
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22. While dusting a carpet, we give a sudden jerk or beat it with a stick, because_____?
A). Inertia of rest keeps the dust in its position and the dirt is removed by the movement of carpet away
B). Inertia of motion removes the dust
C). The jerk compensates for the force of adhesion between the dust and the carpet and the dust is removed
D). None of these
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23. After drinking contaminated water, you would be most apt to develop symptoms of_____?
A). Malaria
B). Typhoid fever
C). Yellow fever
D). Schistosomiasis
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24. In eye donation, which one of the following parts of donor's eye is utilized?
A). Iris
B). Lens
C). Cornea
D). Retina
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25. Storage batteries commonly contain_____?
A). Copper
B). Mercury
C). Lead
D). Iron
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