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Students You know that Chapter 6 (14) The Atmosphere Short Questions of Chemistry are helpful so don’t ignore to find answers from your Chemistry of Class 10.
Class 10 Chemistry Chapter 14 Notes
Class 10 Chemistry Chapter 14 Important Short Questions
- The atmosphere is the envelope of different gases around the Earth.
- The atmosphere is divided into four regions; troposphere, stratosphere, mesosphere, and thermosphere.
- The troposphere is just above the Earth’s surface and extends up to 12 kilometers.
- The stratosphere is next to the troposphere and extends up to 50 km. In this region, the temperature rises upwards because of the presence of the ozone layer.
- The mesosphere is next to the stratosphere and extends up to 85 km.
- The thermosphere lies beyond the mesosphere.
- Natural sources of air pollutants are volcanic eruption and decomposition of organic matter. Sources of air pollutants because of human activities are the burning of fossil fuel in combustion engines of automobiles, kilns of industries, open-air fires, and forest fires.
- CO2 forms a layer around the Earth, that absorbs the infrared radiations emitted by Earth’s surface. Thus, heating up the atmosphere is called the greenhouse effect.
- CO is a highly poisonous gas so it is a health hazard.
- SO2 is also a health hazard and forms sulphuric acid by combining with water vapors in the air. It is also a component of acid rain.
- Acid rain consists of H2SO4 and HNO3 which reduce the pH of rainwater to 4.
- The ozone layer lies in the stratosphere about 25 to 30 km away from the Earth’s surface.
- The ozone layer protects Earth like a shield from harmful ultraviolet radiations of sunlight.
- Chlorofluorocarbons destroy ozone molecules, depleting the ozone called the ozone hole.
- Depletion of ozone enables ultraviolet radiations of the Sun to reach the Earth; causing infectious diseases; and changing the life cycle of plants, and wind patterns.
Important Short Questions
- Explain the phenomenon of decreasing temperature in the troposphere.
- Differentiate between primary and secondary air pollutants.
- State the major sources of CO and CO2 emissions.
- CO2 is responsible for heating up the atmosphere, how?
- CO is a hidden enemy, explain its action.
- What threats are there to human health due to SO2 gas as an air pollutant?
- Which air pollutant is produced by the anaerobic decomposition of organic matter?
- How does acid rain increase the acidity of soil?
- Point out two serious effects of ozone depletion.
- How is the ozone layer formed in the stratosphere?
- Why does 75% of the atmospheric mass lie within the troposphere?
- How ozone layer is being depleted by chlorofluorocarbons?
The topic of this post is Class 10 Chemistry Chapter 6 (14) Short Questions and we add this post to the 10th Chemistry Notes category where students can easily find the Short Questions type study solutions and much more that students need to be related to the Class 10 Chemistry Book.