-
- Carbon dioxide
- Carbon monoxide
- Carbon tetrachloride
- None of the above
Everyday Science MCQs
The Green House Effect is caused by an excess of _____.
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- Carbon monoxide
- Carbon tetrachloride
- Carbon dioxide
- None of the above
T.V. transmission cannot cover a very large area because _____.
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- the strength of TV waves is very limited
- picture cannot be transmitted clearly after a specific distance
- the air is not a good conductor of light and sound/waves
- the shape of the earth is spherical
How much amount of water does the cow’s milk contain in terms of percentage?
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- 60 %
- 80%
- 70%
- 50%
Most of the ozone in the atmosphere is concentrated in the _____.
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- Stratosphere
- Mesosphere
- Ionosphere
- Troposphere
An iceberg is floating in sea. How much of its mass will remain above the surface of water?
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- One fifth
- One third
- One fourth
- One tenth
An astronaut inside a spacecraft is in a state of weightlessness. This implies that _____.
-
- the mass of the astronaut is reduced to zero
- gravity inside the spacecraft ceases to act
- the astronaut and the spacecraft are both in a free-falling state
- the astronaut is outside the influence of the earth’s gravitational force
The sun appears red at sunrise and sunset while it appears white at noon, because _____.
-
- of refraction
- of scattering of light due to dust particles and air molecules
- it is cooler at sunrise and at sunset
- of diffraction leading to red end of the spectrum reaching the earth
A lake starts freezing because of the cold atmosphere. It will first freeze _____.
-
- at the top surface
- at the bottom
- in the middle part
- uniformly throughout the water body
The beautiful colour patterns exhibited by a peacock in its tail feathers are due to _____.
-
- Selective reflection of light
- Selective absorption of light
- Sinterference of light
- Natural colour pattern of feathers
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