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Wednesday 19 June 2024

Everyday Science MCQs | NTS Everyday Science MCQs | Part 14

Pak MCQs Is Educational Website Providing All Types of MCQS  for All Exams and jobs employment test and specially for NTS, ECAT MCAT, CSS, PPSC, ETEA

 NTS Everyday Science MCQs: 

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131)      Which of the following types of radiation is absorbed by the upper layer of the atmosphere?

            (a) Radio-waves

            (b) Infrared

            (c) Visible

            (d) Ultraviolet

132)      After long periods of use, a gray spot develops on the inside of a bulb. This is because:

            (a) The tungsten filament evaporates and collects there

            (b) The heat of the bulb scorches the glass at the top

            (c) Dust inside the bulb condenses on the top

            (d) Glass undergoes a change due to the heat

133)      Approximately, how many times each day do our heart valves open and close normally?

            (a) 10,000

            (b) 1,00,000

            (c) 1,50,000

            (d) 2,00,000

)      A nuclear reactor harnesses nuclear energy by:

            (a) Nuclear fusion

            (b) Spontaneous fission

            (c) Uncontrolled chain reaction

            (d) Controlled chain reaction

)      Which one of the following raw materials is used in the manufacture of foam used in mattresses, cushions, etc.?

            (a) Methanol

            (b) Ethanol

            (c) Urea

            (d) Phenol

)      Permanent magnets can be made from:

             (a) Cobalt

             (b) Aluminum

             (c) Nickel

             (d) Lead

)      Atmospheric pressure exerted on the earth is due to the:

            (a) Rotation of the earth

            (b) Revolution of the earth

            (c) Gravitational pull

            (d) Uneven heating of the earth

)      Quantity of fresh air required for a man is:

            (a) 1000 cubic feet of air for every 20 minutes

            (b) 1000 cubic feet of air for every 20 seconds

            (c) 1000 cubic feet of air for every 10 minutes

            (d) 1000 cubic feet of air for every 10 seconds

)      Where does the oxygen that keeps us alive come from?

            (a) Carbon dioxide

            (b) Carbonates absorbed from the soil

            (c) Oxides of minerals

)      Which one of the following metals pollutes the air of a city having a large number of automobiles?

            (a) Cadmium

            (b) Chromium

            (c) Lead

            (d) Copper

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