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प्रश्न
Discuss two useful applications of greenhouse effect.
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उत्तर
Two useful applications of greenhouse effect are:
1. Growing vegetables and flowers in snow-bound regions:
Sheds using glass walls are built which allow smaller wavelength of solar heat radiations to pass into the shed but does not allow the longer wavelength of heat radiations to pass out during night. This keeps the shed reasonably warm for flowers and vegetables to grow.
2. Use of glass in keeping homes warm:
In cold countries, the glass windows and doors allow the smaller wavelength of heat radiations of solar energy to pass into the rooms but does not allow longer wavelength of heat radiations to pass out. Thus, greenhouse effect takes place and rooms keep reasonably warm.
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संबंधित प्रश्न
List any three human activities that you think would lead to air pollution.
Give one use for the following inert gases :
argon
Give one use for the following inert gase :
helium
Give one use for the following inert gase :
neon
State one method by which :
- Oxygen is added to air
- Carbon dioxide is added to air
- Oxygen is removed from the air
- Carbon dioxide is removed from the air
Describe the major components of air pollution.
Why is air called breath of life? Enumerate functions of air or atmosphere.
Why is air called a mixture? Give five facts in support of your answer.
Who am I?
I am a mixture of gases.
CO2 turns calcium hydroxide solution to a milky white solution.
