Physical geography miscellaneous


  1. The forests which act as barriers against cyclones are :









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    Mangrove Forest acts as barriers against cyclones and other natural disasters like tidal waves and tropical storms. They act as live sea walls against disasters and help minimise damage done to property and life. They also slow soil erosion and stabilize tidal banks against rising sea level, another climate change hazard.

    Correct Option: B

    Mangrove Forest acts as barriers against cyclones and other natural disasters like tidal waves and tropical storms. They act as live sea walls against disasters and help minimise damage done to property and life. They also slow soil erosion and stabilize tidal banks against rising sea level, another climate change hazard.


  1. Our atmosphere is divided into layers.









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    Earth has five primary layers, which are the troposphere, stratosphere, mesosphere, thermosphere and exosphere. From the Earth upwards, those layers are: Troposphere: 0 to 12 km; Stratosphere: 12 to 50 km; Mesosphere: 50 to 80 km; Thermosphere: 80 to 700 km; Exosphere: 700 to 10,000 km.

    Correct Option: D

    Earth has five primary layers, which are the troposphere, stratosphere, mesosphere, thermosphere and exosphere. From the Earth upwards, those layers are: Troposphere: 0 to 12 km; Stratosphere: 12 to 50 km; Mesosphere: 50 to 80 km; Thermosphere: 80 to 700 km; Exosphere: 700 to 10,000 km.



  1. The temperature increases rapidly above









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    Above Troposphere, temperature increases rapidly with height in the Stratosphere layer as it houses the ozone layer which absorbs ultraviolet (UV) rays from the sun. Again, temperature increases rapidly with height in Thermosphere which comprises Ionosphere (lower part) and Exosphere (upper part)). Temperature in Exosphere which is the uppermost layer of the atmosphere reaches up to more than 4500° Celsius.

    Correct Option: B

    Above Troposphere, temperature increases rapidly with height in the Stratosphere layer as it houses the ozone layer which absorbs ultraviolet (UV) rays from the sun. Again, temperature increases rapidly with height in Thermosphere which comprises Ionosphere (lower part) and Exosphere (upper part)). Temperature in Exosphere which is the uppermost layer of the atmosphere reaches up to more than 4500° Celsius.


  1. The humidity of air depends on









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    Humidity is the amount of water vapor in the air. Humidity depends on water vaporization, and condensation, which, in turn, mainly depends on temperature. Temperature, in turn, is affected by weather and location.

    Correct Option: D

    Humidity is the amount of water vapor in the air. Humidity depends on water vaporization, and condensation, which, in turn, mainly depends on temperature. Temperature, in turn, is affected by weather and location.



  1. Which of the following reasons is responsible for lack of vegetation in the deserts ?









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    A desert is a barren area of land where little precipitation occurs and consequently living conditions are hostile for plant and animal life. Lack of or insufficient precipitation is the main reason behind the lack of vegetation.

    Correct Option: E

    A desert is a barren area of land where little precipitation occurs and consequently living conditions are hostile for plant and animal life. Lack of or insufficient precipitation is the main reason behind the lack of vegetation.