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For reproducing sound, a CD (Compact Disc) audio player uses a

Everyday Science Mcqs 0

A. Quartz crystal
B. Titanium needle
C. Barium titanate ceramic
D. Laser beam

Answer

Answer

D. Laser beam

Submitted by: Toheed Ahmed

When a CD (compact disc used in audio and video systems) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of the phenomenon of

Everyday Science Mcqs 0

A. Reflection and transmission
B. Reflection and diffraction
C. Diffraction and transmission
D. Refraction, diffraction and transmission

Answer

Answer

B. Reflection and diffraction

Submitted by: Toheed Ahmed

If a U-238 nucleus splits into two identical parts, the two nuclei so produced will be

Everyday Science Mcqs 0

A. Stable
B. Isobars
C. Isotopes
D. Radioactive

Answer

Answer

D. Radioactive

Submitted by: Toheed Ahmed

Which of the following types radiations is absorbed by the upper layer of the atmosphere?

Everyday Science Mcqs 0

A. Radio-waves
B. Infrared
C. Ultraviolet
D. Visible

Answer

Answer

B. Infrared

Submitted by: Toheed Ahmed

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

Everyday Science Mcqs 0

A. The tungsten filament evaporates and collects there
B. Glass undergoes a change due to the heat
C. The heat of the bulb scorches the glass at the top
D. Dust inside the bulb condenses on the top

Answer

Answer

A. The tungsten filament evaporates and collects there

Submitted by: Toheed Ahmed

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

Everyday Science Mcqs 0

A. 10,000
B. 1,00,000
C. 2,00,000
D. 1,50,000

Answer

Answer

B. 1,00,000

Submitted by: Toheed Ahmed

A nuclear reactor harnesses nuclear energy by

Everyday Science Mcqs 0

A. Nuclear fusion
B. Spontaneous fission
C. Controlled chain reaction
D. Uncontrolled chain reaction

Answer

Answer

C. Controlled chain reaction

Submitted by: Toheed Ahmed

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

Everyday Science Mcqs 0

A. Methanol
B. Ethanol
C. Urea
D. Phenol

Answer

Answer

D. Phenol

Submitted by: Toheed Ahmed

Permanent magnets can be made from

Everyday Science Mcqs 0

A. Cobalt
B. Lead
C. Zinc
D. Aluminium

Answer

Answer

A. Cobalt

Submitted by: Toheed Ahmed

Atmospheric pressure exerted on the earth is due to the

Everyday Science Mcqs 0

A. Gravitational pul
B. Rotation of the earth
C. Revolution of the earth
D. Uneven heating of the earth

Answer

Answer

A. Gravitational pul

Submitted by: Toheed Ahmed

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