Pak Exam MCQs

The mesosphere starts at 31 miles (50 km) and extends to

A. 60 km
B. 85 km
C. 75 km
D. 80 km

Answer & Solution

Option: B
Explanation : Earth’s atmosphere is divided into five main layers: Exosphere, Thermo-sphere, Mesosphere, Stratosphere and Troposphere.
Mesosphere starts at 31 miles (50 km) and extends to 53 miles (85 km) high. The top of the mesosphere, called the mesopause, is the coldest part of Earth’s atmosphere, with temperatures averaging about minus 130 degrees F (minus 90 C). Jets and balloons don’t go high enough, and satellites and space shuttles orbit too high.

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Which one layer is closest to Earth’s surface

Pakexammcq World Geography 0

A. Troposphere
B. Thermo-sphere
C. Mesosphere
D. Stratosphere

Answer & Solution

Option: A
Explanation :Earth’s atmosphere is divided into five main layers: Exosphere, Thermo-sphere, Mesosphere, Stratosphere and Troposphere.
Troposphere:- is the layer closest to Earth’s surface. It is 4 to 12 miles (7 to 20 km) thick and contains half of Earth’s atmosphere. Air is warmer near the ground and gets colder higher up. Nearly all of the water vapor and dust in the atmosphere are in this layer and that is why clouds are found here.

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Which of the following layer is above the troposphere

Pakexammcq World Geography 0

A. Exosphere
B. Thermo-sphere
C. Mesosphere
D. Stratosphere

Answer & Solution

Option: D
Explanation : Earth’s atmosphere is divided into five main layers: Exosphere, Thermo-sphere, Mesosphere, Stratosphere and Troposphere.
stratosphere is the second layer. It starts above the troposphere and ends about 31 miles (50 km) above ground. Ozone is abundant here and it heats the atmosphere while also absorbing harmful radiation from the sun. The air here is very dry, and it is about a thousand times thinner here than it is at sea level. Because of that, this is where jet aircraft and weather balloons fly.

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Where atmosphere meets outer space

Pakexammcq World Geography 0

A. Karman line
B. Stratosphere
C. Thermosphere
D. Exosphere

Answer & Solution

Option: A
Explanation :There is no distinct boundary between the atmosphere and space, but an imaginary Karman line is the altitude where space begins. It is about 62 miles (100 km) high. It commonly represents the border between the Earth’s atmosphere and outer space.

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Thickness of atmosphere around earth is

Pakexammcq World Geography 0

A. 100 km
B. 130 km
C. 145 km
D. 195 km

Answer & Solution

Option: C
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South pole is located in the continent

Pakexammcq World Geography 0

A. Australia
B. Asia
C. Europe
D. Antarctica

Answer & Solution

Option: D
Explanation :The South Pole is located on Antarctica. Although land at the South Pole is only about a hundred meters above sea level, the ice sheet above it is roughly 2,700 meters (9,000 feet) thick. This elevation makes the South Pole much colder than the North Pole, which sits in the middle of the Arctic Ocean.
The coldest temperature recorded at the South Pole is -82.8 degrees Celsius (-117.0 degrees Fahrenheit), is still warmer than the coldest temperature ever recorded.

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The tide at it’s maximum height is called

Pakexammcq World Geography 0

A. Equinoxes
B. Tsunami
C. Spring tide
D. Neap tide

Answer & Solution

Option: C
Explanation :Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun, and the rotation of the Earth.

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Town situated at the highest altitude

Pakexammcq Largest And Smallest, World Geography 0

A. Lhasa
B. Takh
C. Niagsu
D. Komic

Answer & Solution

Option: A
Explanation :Lhasa the holy city of Tibet Buddhism and the political, economic, cultural and religious center of Tibet Autonomous Region. It is located in the middle of Qinghai Tibet Plateau, north of Himalaya Mountains. It is one of the highest cities in the world at an average altitude of 3,650m (11,975ft). The geographical features are a low-lying South High North, tilt from east to west, flat Lhasa River valley plain in south central Lhasa.

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