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Everyday Science 2143 MCQs [All-Courses]

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It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the_______?

A pitch
B Frequency
C Time period
D Quality
Correct Answer: pitch

_________ is the layer wherein most meteors are incinerated before reaching the surface.

A Troposphere
B Stratosphere
C Mesosphere
D Ionosphere
Correct Answer: Mesosphere

The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________?

A 1120 ft
B 120 ft
C 56 ft
D 100 ft
Correct Answer: 56 ft

The mesosphere ranges from ________ to _________?

A 46 km to 85 km
B 48 km to 85 km
C 50 km to 85 km
D 52 km to 85 km
Correct Answer: 50 km to 85 km

In winter an iron pipe feel colder than a wooden window . This is because wood is_______?

A Conductor
B Non-Conductor
C Semi- Conductor
D Not a solid while iron is a solid
Correct Answer: Conductor

Stratosphere is the atmospheric layer that absorbs most of __________ that Earth receives from the Sun.

A Infrared radiation
B Ultraviolet radiation
C Ozone layer
D Radio waves
Correct Answer: Ultraviolet radiation

Water is heated in a kettlE. The inside water is heated by convection. A person sitting near the fire receives heat by ________?

A Conduction
B Convection
C Radiation
D Reflection
Correct Answer: Radiation

_________ is the atmospheric layer that absorbs most of the ultraviolet radiation that Earth receives from the Sun.

A Troposphere
B Stratosphere
C Mesosphere
D Ionosphere
Correct Answer: Stratosphere

In a railway track, two rails are joined end to end with a gap tin between them because?

A Steel can be saved
B Accidents due to contraction in winter can be avoided
C Air gaps are necessary for bearing the weight of running train
D Accidents due to expansion in summer can be avoided
Correct Answer: Accidents due to expansion in summer can be avoided

Stratosphere is present at an altitude between _________.

A 15 km and 35 km
B 17 km and 35 km
C 18 km and 35 km
D 19 km and 35 km
Correct Answer: 15 km and 35 km