Astronomy & Space — Part 3: 40 MCQs with Explanations

The biggest planet in solar system is Jupiter, Seventy-nine and having _____ moons.

The Planet which revolves slowly around the Sun is Neptune .

The “Rising” of the “evening star” indicates the direction of the West .

Ring planet is Saturn; least dense and 2nd largest planet is Saturn .

The most dense and heaviest planet is Earth .

Ozone layer protects the Earth from ultraviolet radiations from the Sun.

The matter of our sun is in Plasma state.

109 times is the correct answer to “How many times the sun is bigger than the size of the earth”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

3 is the correct answer to “How many layers does the earth have”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Lunar eclipse occurs on Full Moon .

August 24, 2006 is the correct answer to “When Pluto was cast out from the list of Planets”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Place directly above focus on Earth’s surface is known as Epicenter .

Algae is the correct answer to “Which of the following is responsible for largest amount of oxygen on earth”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Earth rotates the sun in 23 hours 56 min 4 sec .

During a total solar eclipse there is most likely to be A decrease in the rate of photosynthesis .

The outermost layer of the Earth is called Crust .

Troposphere is the correct answer to “The lowest region of the earth’s atmosphere comes between the earth and stratosphere. what is this region’s name”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Venus is the correct answer to “Which is the hottest planet in our Solar system”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Gravity is the correct answer to “What prevents the earth’s atmosphere from drifting away into space”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

Moon is the correct answer to “Which one is Natural Satellite”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

14 is the correct answer to “How many moons does Neptune have”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

27 is the correct answer to “How many moons does Uranus have”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

The Sun produces most of its energy by Nuclear fusion .

The time taken by Sun to revolve around the center of our galaxy is 250 million years .

The Sun is at an average distance of about 150 million million kilometers away from Earth.

Cosmic rays is the correct answer to “Which rays are trapped in our galaxy by magnetic waves”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

According to Einsteins general theory of relativity the universe: Must be either expanding or contracting .

When a single month has two full moons, the second moon is called Blue moon .

Mass of Earth is 5.972 × 10 .

Moon is a Satellite .

In 2013, Planck measured the age of the universe at 13.82 billion years .

Jupiter has 79 known moons.

27.3 days is the correct answer to “How long does it take for the moon to orbit the earth once”. Items of this type are drawn from the Astronomy & Space — Part 3 syllabus of Pakistani competitive exams, where the fact is tested verbatim.

The distance b/w Earth and Moon is 3,84,400km .

The Time taken for sunlight to reach the Earth is 8 mins 20 sec .

Most abundant color in Earth is Blue .

Nearest galaxy to our milky way is Andromeda .

Approximate age of earth is 4.54 billion years .

Approximate age of moon is 4.53 billion years .

Approximate age of sun is 4.6 billion years .