Air and Atmosphere Class 7 ICSE. We covered all the Air and Atmosphere Class 7 ICSE in this post for free so that you can practice well for the exam.
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Air and Atmosphere Class 7 ICSE Objective for Students
The ozone layer refers to
(A) The atmospheric condition of Antarctica
(B) Modern invention did on the planet Saturn
(C) The layer about 10-20 km below the surface of the Earth
(D) The layer of the atmosphere 15-20 km above the surface of the Earth
Option d – The layer of the atmosphere 15-20 km above the surface of the Earth
The ozone layer lies in the
(A) Troposphere
(B) Tropopause
(C) Stratosphere
(D) Photosphere
Option c – Stratosphere
Which of the following protects life on Earth from the harmful radiations of the Sun?
(A) Troposphere
(B) Ionosphere
(C) Ozone layer
(D) Mist
Option c – Ozone layer
The function of the Ozone layer in the stratosphere is
(A) To stabilize the global temperature
(B) To reduce the frequency of Earthquake
(C) To avoid the failure of monsoons
(D) To prevent ultra-violet radiation effect on the ground
Option d – To prevent ultra-violet radiation effect on the ground
The correct sequence of different layers of the atmosphere from the surface of the Earth upwards is
(A) Troposphere, Stratosphere, Ionosphere, Mesosphere
(B) Stratosphere, Troposphere, Ionosphere, Mesosphere
(C) Troposphere, Stratosphere, Mesosphere, Ionosphere
(D) Stratosphere, Troposphere, Mesosphere, Ionosphere
Option c – Troposphere, Stratosphere, Mesosphere, Ionosphere
Most weather activity occurs in which atmospheric layer?
(A) Ozonosphere
(B) Ionosphere
(C) Troposphere
(D) Exosphere
Option c – Troposphere
The atmosphere is a mixture of several gases. Near the Earth’s surface, it contains mainly
(A) Nitrogen and oxygen
(B) Nitrogen and carbon dioxide
(C) Oxygen and carbon dioxide
(D) Ethane and oxygen
Option a – Nitrogen and oxygen
Which gas has the maximum percentage in the atmosphere?
(A) Carbon
(B) Nitrogen
(C) Oxygen
(D) Hydrogen
Option b – Nitrogen
The stratosphere is said to be ideal for flying jet aircraft. This is because
(A) This layer is rich in ozone which reduces fuel consumption.
(B) The temperature is constant and ideal for aircraft engine efficiency
(C) This layer is out of the firing range of antiaircraft guns
(D) The absence of clouds and other weather phenomena
Option d – The absence of clouds and other weather phenomena
We covered all the air and atmosphere class 7 icse above in this post for free so that you can practice well for the exam.
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