How many Layers of Earth...?

PPSC Past Papers

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How many Layers of Earth...?

(A) 2

(B) 4

(C) 6

(D) 8

✅ Correct Answer: 4

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Source: This question is taken from the Everyday Science

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The nearest Star to the planet earth is ________ ...?

(A) Regel

(B) Canopus

(C) Sun

(D) Betelgeuse

✅ Correct Answer: Sun

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Source: This question is taken from the Everyday Science

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Ozone layer exist above the earth about ______...?

(A) 35km

(B) 25km

(C) 40km

(D) 30km

✅ Correct Answer: 30km

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Source: This question is taken from the Everyday Science

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Approximately how many Galaxies are there ...?

(A) 10 Billion Galaxies

(B) 100 Billion Galaxies

(C) 1000 Billion Galaxies

(D) 10000 Billion Galaxies

✅ Correct Answer: 100 Billion Galaxies

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Source: This question is taken from the Everyday Science

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Border line which separates outer space from Earth’s atmosphere is known as___________...?

(A) Durand line

(B) Space line

(C) Venus line

(D) Karman line

✅ Correct Answer: Karman line

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Source: This question is taken from the Everyday Science

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In general, the most destructive earthquake waves are the __________ ...?

(A) P waves

(B) S waves

(C) Surface waves

(D) All of the above

✅ Correct Answer: Surface waves

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Source: This question is taken from the Everyday Science

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The Shape of earth is _________...?

(A) Elliptical

(B) Oblate Spheroid

(C) Oval

(D) Spherical

✅ Correct Answer: Oblate Spheroid

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Source: This question is taken from the Everyday Science

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Most abundant color in Earth is_________...?

(A) Blue

(B) Green

(C) Brown

(D) Black

✅ Correct Answer: Blue

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Source: This question is taken from the Everyday Science

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Which layer of the atmosphere lies close to the earth...?

(A) Stratosphere

(B) Mesosphere

(C) Troposphere

(D) Thermosphere

✅ Correct Answer: Troposphere

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Source: This question is taken from the Everyday Science

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Less than one percent of Earth’s water is fresh water but Ocean contains what percent of the total water of planet Earth...?

(A) 99%

(B) 89%

(C) 77%

(D) 97%

✅ Correct Answer: 97%

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Source: This question is taken from the Everyday Science

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_________ is the layer wherein most meteors are incinerated before reaching the surface....?

(A) Troposphere

(B) Stratosphere

(C) Mesosphere

(D) Ionosphere

✅ Correct Answer: Mesosphere

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Source: This question is taken from the Everyday Science

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Which of the following elements is not present abundantly in earth’s crust ...?

(A) Silicon

(B) Radium

(C) Aluminum

(D) Carbon

✅ Correct Answer: Radium

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Source: This question is taken from the Everyday Science

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How long does the Earth take to complete one rotation...?

(A) 23 hours 59 minutes 59 seconds

(B) 24 hours 00 minutes 00 seconds

(C) 23 hours 56 minutes 04 seconds

(D) 24 hours 01 minutes 01 seconds

✅ Correct Answer: 23 hours 56 minutes 04 seconds

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Source: This question is taken from the Everyday Science

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A thick layer of air that surrounds the earth is known as...?

(A) Ozone

(B) Atmosphere

(C) Stratosphere

(D) Hydrosphere

✅ Correct Answer: Atmosphere

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Source: This question is taken from the Everyday Science

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What is the distance of the star Proxima Centauri from the planet Earth ________...?

(A) 4.2 light years

(B) 3.2 light years

(C) 2.4 light years

(D) 1.5 light years

✅ Correct Answer: 4.2 light years

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Source: This question is taken from the Everyday Science

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How many states of matters are there...?

(A) 1

(B) 2

(C) 3

(D) 4

✅ Correct Answer: 3

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Source: This question is taken from the Everyday Science

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In which layer of atmosphere does commercial aircrafts usually fly...?

(A) Stratosphere

(B) Troposphere

(C) Mesosphere

(D) Thermosphere

✅ Correct Answer: Stratosphere

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Source: This question is taken from the Everyday Science

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which Planet is Called Earth’s Sister...?

(A) Mercury

(B) Venus

(C) Mars

(D) Neptune

✅ Correct Answer: Venus

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Source: This question is taken from the Everyday Science

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We always see the same face of the moon, because...?

(A) It is smaller than the earth

(B) It revolves on its axis in a direction opposite to that of the earth

(C) It takes equal time for revolution around the earth and rotation on its own axis

(D) It rotates at the same speed as the earth around the sun

✅ Correct Answer: It takes equal time for revolution around the earth and rotation on its own axis

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Source: This question is taken from the Everyday Science

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Which layer of the atmosphere reflects radio waves back to the earth’s surface...?

(A) Troposphere

(B) Stratosphere

(C) Ozone layer

(D) Ionosphere

✅ Correct Answer: Ionosphere

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Source: This question is taken from the Everyday Science

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Which animal have a thick layer of fat under their skin which protects them from the cold temperature of the sea...?

(A) Blue Whale

(B) Starfish

(C) Crocodile

(D) None

✅ Correct Answer: Blue Whale

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Source: This question is taken from the Everyday Science

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The earth’s atmosphere is divided into layers based on the vertical profile of __________...?

(A) Air pressure

(B) Air temperature

(C) Air density

(D) Wind speed

✅ Correct Answer: Air temperature

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Source: This question is taken from the Everyday Science

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The largest latitude circle on earth is ________...?

(A) Arctic circle

(B) Tropic of cancer

(C) Tropic of Capricorn

(D) The Equator

✅ Correct Answer: The Equator

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Source: This question is taken from the Everyday Science

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Which of the following are the layers of the body wall in sponges...?

(A) Pinacoderm and mesoderm

(B) Pinacoderm and choanoderm

(C) Epidermis and choanoderm

(D) Pinacoderm and ectoderm

✅ Correct Answer: Pinacoderm and choanoderm

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Source: This question is taken from the Everyday Science

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_________ is the atmospheric layer that absorbs most of the ultraviolet radiation that Earth receives from the Sun....?

(A) Troposphere

(B) Stratosphere

(C) Mesosphere

(D) Ionosphere

✅ Correct Answer: Stratosphere

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Source: This question is taken from the Everyday Science

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Most of the weather phenomena take place in which of the following layers of the atmosphere...?

(A) Mesosphere

(B) Ionosphere

(C) Stratosphere

(D) Troposphere

✅ Correct Answer: Troposphere

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Source: This question is taken from the Everyday Science

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Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere...?

(A) Carbon dioxide

(B) Chlorofluorocarbons

(C) Nitrogen oxides

(D) Methane

✅ Correct Answer: Chlorofluorocarbons

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Source: This question is taken from the Everyday Science

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Approximate age of earth is ________...?

(A) 4.14 billion years

(B) 4.64 billion years

(C) 4.54 billion years

(D) 4.34 billion years

✅ Correct Answer: 4.54 billion years

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Source: This question is taken from the Everyday Science

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Stratosphere is the atmospheric layer that absorbs most of __________ that Earth receives from the Sun....?

(A) Infrared radiation

(B) Ultraviolet radiation

(C) Ozone layer

(D) Radio waves

✅ Correct Answer: Ultraviolet radiation

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Source: This question is taken from the Everyday Science

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Which planet is losing its atmosphere at faster than the earth...?

(A) Mecury

(B) Venus

(C) Mars

(D) Jupiter

✅ Correct Answer: Mars

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Source: This question is taken from the Everyday Science

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The ISS (International Space Station) orbits Earth about once every...?

(A) 60 minutes at an altitude of about 400 km

(B) 60 minutes at an altitude of about 500 km

(C) 90 minutes at an altitude of about 400 km

(D) 90 minutes at an altitude of about 500 km

✅ Correct Answer: 90 minutes at an altitude of about 400 km

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Source: This question is taken from the Everyday Science

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The motion of a falling ball towards Earth is due to the _____...?

(A) Weightlessness

(B) Gravitational force

(C) Acceleration due to gravity

(D) Both 'a' and 'b’

✅ Correct Answer: Gravitational force

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Source: This question is taken from the Everyday Science

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How many layers does sun have ...?

(A) 6

(B) 4

(C) 7

(D) 3

✅ Correct Answer: 6

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Source: This question is taken from the Everyday Science

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A rocket needs the speed of _______ to escape from earth’s gravity...?

(A) 22 miles per second

(B) 15 miles per second

(C) 12 miles per second

(D) 7 miles per second

✅ Correct Answer: 7 miles per second

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Source: This question is taken from the Everyday Science

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Which pulls objects towards earth...?

(A) Gravity

(B) Friction

(C) Force

(D) Mass

✅ Correct Answer: Gravity

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Source: This question is taken from the Everyday Science

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Which one metal belongs to Alkaline earth metal...?

(A) B

(B) Bi

(C) Br

(D) Ba

✅ Correct Answer: Ba

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Source: This question is taken from the Everyday Science

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The outermost layer of the sun is called __________...?

(A) Coach

(B) Core

(C) Corona

(D) Comma

✅ Correct Answer: Corona

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Source: This question is taken from the Everyday Science

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Part of earth where life exists is called ______...?

(A) Lithosphere

(B) Atmosphere

(C) Biosphere

(D) Hydrosphere

✅ Correct Answer: Biosphere

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Source: This question is taken from the Everyday Science

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The ozone layer is at height of________kilometers from the surface of the Earth...?

(A) 10 to 20

(B) 20 to 30

(C) 30 to 40

(D) 40 to 50

✅ Correct Answer: 20 to 30

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Source: This question is taken from the Everyday Science

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Mass of Earth is___________...?

(A) 5.972 × 1024 kg.

(B) 6.972 × 1024 kg

(C) 7.972 × 1024 kg

(D) 8.972 × 1024 kg

✅ Correct Answer: 5.972 × 1024 kg.

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Source: This question is taken from the Everyday Science

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Ozone layer protects the Earth from __________ radiations from the Sun....?

(A) microwaves

(B) infrared

(C) X-rays

(D) ultraviolet

✅ Correct Answer: ultraviolet

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Source: This question is taken from the Everyday Science

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A thin partially permeable layer around the animal cell which control the substances that enter and exist is called...?

(A) Cell Wall

(B) Cell Membrane

(C) Cytoplasm

(D) Nucleus

✅ Correct Answer: Cell Membrane

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Source: This question is taken from the Everyday Science

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The point within the Earth where earthquakes originate is _________...?

(A) Comma

(B) Origin

(C) Epicenter

(D) Focus

✅ Correct Answer: Rashid Mehmood

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Source: This question is taken from the Everyday Science

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Which is a water purification technology that uses a semipermeable membrane to remove ions, molecules and larger particles from drinking water...?

(A) Filtration

(B) Reverse Osmosis (RO)

(C) Sedimentation

(D) Distillation

✅ Correct Answer: Reverse Osmosis (RO)

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Source: This question is taken from the Everyday Science

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How many scales are there to measure temperature...?

(A) 1

(B) 2

(C) 3

(D) 4

✅ Correct Answer: 3

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Source: This question is taken from the Everyday Science

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A thick permeable layer around the plant cell is called...?

(A) Cell Wall

(B) Cytoplasm

(C) Cell Membrane

(D) None

✅ Correct Answer: Cell Wall

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Source: This question is taken from the Everyday Science

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How many layers of Atmosphere...?

(A) 2

(B) 3

(C) 4

(D) 5

✅ Correct Answer: 5

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Source: This question is taken from the Everyday Science

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The instrument which i specially design for recording earth quake wave is called seismograph which measure earth quake waves on a ____________...?

(A) Diatonic scale

(B) Fahrenheit Scale

(C) Richter scale

(D) Celsius Scale

✅ Correct Answer: Richter scale

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Which among the following is the correct sequence of the various layers of the Atmosphere from the Earth’s surface...?

(A) Ionosphere, Mesosphere, Stratosphere, Troposphere

(B) Mesosphere, Stratosphere, Ionosphere, Troposphere

(C) Troposphere, Stratosphere, Mesosphere, Ionosphere

(D) Troposphere, Ionosphere, Stratosphere, Mesosphere

✅ Correct Answer: Troposphere, Stratosphere, Mesosphere, Ionosphere

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Source: This question is taken from the Everyday Science

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Heat of sun reaches the earth by ___________...?

(A) Convection

(B) radiation

(C) Conduction

(D) None of these

✅ Correct Answer: radiation

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Source: This question is taken from the Everyday Science

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How many latitude lines are there...?

(A) 90

(B) 180

(C) 270

(D) 360

✅ Correct Answer: 180

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Source: This question is taken from the Everyday Science

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Layer of atmosphere which separates stratosphere and troposphere is known as...?

(A) Tropo-pause

(B) Mesopause

(C) Stratopause

(D) Thermopause

✅ Correct Answer: Stratopause

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Source: This question is taken from the Everyday Science

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One of the main function of the earth’s ozone layer is to ...?

(A) Prevent global warming

(B) Filter out ultraviolet rays

(C) Absorb pollution

(D) All of the above

✅ Correct Answer: Filter out ultraviolet rays

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Source: This question is taken from the Everyday Science

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The heat from Sun reaches to earth in form of waves called _____...?

(A) Conduction

(B) Radiation

(C) Convection

(D) None

✅ Correct Answer: Radiation

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Source: This question is taken from the Everyday Science

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Second layer of Earth’s atmosphere is__________...?

(A) Stratosphere

(B) Mesosphere

(C) Troposphere

(D) Thermosphere

✅ Correct Answer: Stratosphere

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Source: This question is taken from the Everyday Science

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Near Earth's surface g = ______...?

(A) 10 ms^-2

(B) 1.6 ms^-1

(C) Both (a) and (b)

(D) None of these

✅ Correct Answer: 10 ms^-2

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Which of the following layers make radio transmission possible...?

(A) Troposphere

(B) Ionosphere

(C) Mesosphere

(D) Stratosphere

✅ Correct Answer: Ionosphere

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Source: This question is taken from the Everyday Science

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The rocks formed out of layers of sediment bonded together are known as _______________...?

(A) Metamorphic rocks

(B) Sedimentary rocks

(C) Igneous rocks

(D) All of the above

✅ Correct Answer: Sedimentary rocks

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Remote sensing is the science of obtaining information about objects or areas on earth from space by using ____...?

(A) Satellite

(B) Radar

(C) Telescope

(D) Aircraft

✅ Correct Answer: Satellite

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Source: This question is taken from the Everyday Science

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Which of the following atmospheric layers help in radio communication...?

(A) Exosphere

(B) Ionosphere

(C) Troposphere

(D) Stratosphere

✅ Correct Answer: Ionosphere

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Source: This question is taken from the Everyday Science

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Moon light reaches to earth in___________seconds...?

(A) 0.3 seconds

(B) 1.3 seconds

(C) 2.3 seconds

(D) 3.3 seconds

✅ Correct Answer: 1.3 seconds

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Source: This question is taken from the Everyday Science

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How many layers does the earth have...?

(A) 1

(B) 2

(C) 3

(D) 4

✅ Correct Answer: 3

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Source: This question is taken from the Everyday Science

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The Sun is at an average distance of about________ million kilometers away from Earth...?

(A) 100 million

(B) 150 million

(C) 200 million

(D) 250 million

✅ Correct Answer: 150 million

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Source: This question is taken from the Everyday Science

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Mercury, Venus, Earth and Mars are called___________...?

(A) Dwarf Planet

(B) Gaseous Planets

(C) Terrestrial Planets

(D) Both A & B

✅ Correct Answer: Terrestrial Planets

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The Chandrayaan-3 mission by the Indian Space Research Organisation (ISRO) was successfully lifted off from which Space Centre...?

(A) Paresh Dhawan Space Centre

(B) Satish Dhawan Space Centre

(C) Ram Dhawan Space Centre

(D) Shiri Dhawan Space Centre

✅ Correct Answer: Satish Dhawan Space Centre

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There is a hole in the Ozone Layer at__________...?

(A) South Pole

(B) North Pole

(C) Both A and B

(D) None of These

✅ Correct Answer: South Pole

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Source: This question is taken from the Everyday Science

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How many colors are there in Rainbow ...?

(A) 2

(B) 4

(C) 5

(D) 7

✅ Correct Answer: 7

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The sun is _________times bigger than the Earth....?

(A) 105

(B) 107

(C) 109

(D) 111

✅ Correct Answer: 109

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Which thing resists between shoes and earth...?

(A) Rolling

(B) Friction

(C) Fluid

(D) sliding

✅ Correct Answer: Friction

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What is the percentage of salt water on earth surface...?

(A) 93%

(B) 95%

(C) 97%

(D) 76%

✅ Correct Answer: 97%

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Ozone layer thickness is measured in____________...?

(A) Metre

(B) Joule

(C) Pounds

(D) Dobson

✅ Correct Answer: Dobson

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Mass of Earth is _____...?

(A) 6.0 x 10^23 kg

(B) 6.0 x 10^24 kg

(C) 6.0 ´ 10^25 kg

(D) 6.0 ´ 10^26 kg

✅ Correct Answer: 6.0 x 10^24 kg

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What percentage of earth’s water supply is fresh water___________...?

(A) 3%

(B) 5%

(C) 21%

(D) None of these

✅ Correct Answer: 3%

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The outermost layer of the Earth is called ____________...?

(A) Crust

(B) Mental

(C) Core

(D) None of these

✅ Correct Answer: Crust

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Source: This question is taken from the Everyday Science

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__________ is the atmospheric layer wherein the weather occurs....?

(A) Troposphere

(B) Stratosphere

(C) Mesosphere

(D) Thermosphere

✅ Correct Answer: Troposphere

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Source: This question is taken from the Everyday Science

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The outermost layer of the sun is called...?

(A) Fotofera

(B) Corona

(C) Core

(D) Cromosfera

✅ Correct Answer: Corona

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Which element is called earth maker...?

(A) Oxygen

(B) Silicon

(C) Carbon

(D) Hydrogen

✅ Correct Answer: Silicon

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Ozone layer is part of ______...?

(A) Mesosphere

(B) Stratosphere

(C) Thermosphere

(D) Troposphere

✅ Correct Answer: Troposphere

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The depletion of ozone layer has been caused mainly by _____...?

(A) The release of industrial waste

(B) The deforestation of large area land

(C) The release of chlorofluorocarbons into the atmosphere

(D) None of these

✅ Correct Answer: The release of chlorofluorocarbons into the atmosphere

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Second highest layer of Earth's atmosphere is _______...?

(A) Troposphere

(B) Stratosphere

(C) Mesosphere

(D) Thermosphere

✅ Correct Answer: Stratosphere

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The largest artery in human body_______...?

(A) Subclavian artery

(B) Aorta

(C) Brachial artery

(D) None of these

✅ Correct Answer: Aorta

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How long does the earth take to cover 1° longitude...?

(A) 2 Minutes

(B) 3 Minutes

(C) 4 Minutes

(D) 5 Minutes

✅ Correct Answer: 4 Minutes

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

__________ is the lowest layer of the atmosphere....?

(A) Stratosphere

(B) Mesosphere

(C) Troposphere

(D) Thermosphere

✅ Correct Answer: Troposphere

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

What is the largest artificial object in space...?

(A) ISS (International Space Station)

(B) AI powered robot

(C) Parabolic aircraft

(D) None of the above

✅ Correct Answer: ISS (International Space Station)

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Outer layer of the human skin is called __________...?

(A) Hypodermis

(B) Dermis

(C) Hemidermis

(D) Epidermis

✅ Correct Answer: Epidermis

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Sensitive layer of the eye is...?

(A) Choriods

(B) Sclerotic

(C) Retina

(D) Cornea

✅ Correct Answer: Retina

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The largest part of the human brain is ___________...?

(A) Medulla oblongata

(B) Cerebellum

(C) Cerebrum

(D) None of these

✅ Correct Answer: Cerebrum

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Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

How many Layers of Earth...? Mcqs

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