Everyday Science · Topic 4
The solar system, space firsts and Pakistan's space programme.
Learn first
Learn the planets in order with their records, the first achievements in space, and Pakistan's satellites.
Practise
Try each question, then open the answer. MCQs 101–150 of 267.
101.What does "IoT" stand for?
Answer: B. Internet of Things
IoT means everyday devices connected to the internet.
102.What does "5G" refer to?
Answer: D. Fifth-generation mobile networks
5G is the fifth generation of mobile network technology.
103.Which country produces most of the world's most advanced computer chips?
Answer: C. Taiwan
Taiwan's TSMC makes most of the world's leading-edge chips.
104.The material used to make computer chips is mainly what?
Answer: A. Silicon
Chips are made on silicon wafers.
105.What is the full form of LED?
Answer: B. Light Emitting Diode
LEDs give light when current passes through a semiconductor.
106.What is the full form of LASER?
Answer: D. Light Amplification by Stimulated Emission of Radiation
The laser was first built in 1960.
107.Which technology uses sound waves to create images of organs and unborn babies?
Answer: A. Ultrasound scanning
Ultrasound uses high-frequency sound echoes.
108.MRI scanners use which of these to make images?
Answer: C. Strong magnetic fields and radio waves
Magnetic Resonance Imaging uses magnets and radio waves, not X-rays.
109.Which device converts sound into electrical signals?
Answer: D. Microphone
A microphone turns sound waves into electrical signals.
110.Which country hosts CERN, home of the Large Hadron Collider?
Answer: A. Switzerland (on the French border)
CERN is near Geneva, straddling the French border.
111.Pakistan became an associate member of CERN in which year?
Answer: D. 2015
Pakistan became an associate member state of CERN in July 2015.
112.The Sun is what kind of star?
Answer: A. A yellow dwarf
The Sun is a G-type main-sequence star.
113.About how old is the Sun?
Answer: A. About 4.6 billion years
The solar system formed about 4.6 billion years ago.
114.About how old is the universe, according to current science?
Answer: D. About 13.8 billion years
The estimate comes from the cosmic microwave background.
115.The theory that the universe began from a hot, dense state is called what?
Answer: A. Big Bang theory
It is supported by the expansion of the universe.
116.Who discovered that the universe is expanding?
Answer: C. Edwin Hubble
Hubble's observations in 1929 showed galaxies moving apart.
117.Who first proposed that the Sun, not the Earth, is the centre of the solar system?
Answer: C. Nicolaus Copernicus
Copernicus published his model in 1543.
118.Who first used a telescope to observe Jupiter's moons?
Answer: D. Galileo Galilei
Galileo saw four moons of Jupiter in 1610.
119.Who gave the laws of planetary motion?
Answer: D. Johannes Kepler
Kepler showed that planets move in ellipses.
120.The earlier model that put the Earth at the centre is linked with which astronomer?
Answer: D. Ptolemy
Ptolemy's geocentric model lasted for centuries.
121.Which Muslim astronomer of the 9th century wrote widely used astronomical tables?
Answer: D. Al-Battani
Al-Battani measured the length of the solar year accurately.
122.Which Muslim scholar estimated the Earth's radius with great accuracy using a mountain?
Answer: A. Al-Biruni
Al-Biruni did his measurement near Pind Dadan Khan in present-day Pakistan.
123.Where did Al-Biruni measure the radius of the Earth?
Answer: D. Near Nandana Fort, Jhelum district
He used a hill near the Salt Range in the 11th century.
124.Which planet has the most known moons (as of the mid-2020s)?
Answer: D. Saturn
Saturn has well over 100 confirmed moons.
125.Which planet has a moon called Triton that orbits backwards?
Answer: A. Neptune
Triton is thought to be a captured object.
126.Which moon of Jupiter is the most volcanically active body in the solar system?
Answer: D. Io
Io has hundreds of active volcanoes.
127.Which moon of Jupiter is thought to have an ocean under its icy surface?
Answer: C. Europa
NASA's Europa Clipper was launched in 2024 to study it.
128.Mars has how many moons?
Answer: D. Two
Phobos and Deimos.
129.Which planets have no moons?
Answer: A. Mercury and Venus
Mercury and Venus have no natural satellites.
130.The Kuiper Belt lies beyond which planet?
Answer: C. Neptune
Pluto is a Kuiper Belt object.
131.Which spacecraft is the farthest human-made object from Earth?
Answer: D. Voyager 1
Voyager 1 entered interstellar space in 2012.
132.Voyager 1 was launched in which year?
Answer: C. 1977
Voyager 1 and 2 were both launched in 1977.
133.Which spacecraft flew past Pluto in 2015?
Answer: A. New Horizons
It sent back the first close images of Pluto.
134.Which NASA mission studied Saturn from 2004 to 2017?
Answer: B. Cassini
Cassini ended by diving into Saturn.
135.Which NASA rover landed on Mars in 2021 with a small helicopter?
Answer: A. Perseverance
Its helicopter, Ingenuity, made the first powered flight on another planet.
136.Which NASA rover landed on Mars in 2012?
Answer: B. Curiosity
Curiosity landed in Gale Crater.
137.China's first Mars rover was called what?
Answer: B. Zhurong
It landed in 2021 as part of the Tianwen-1 mission.
138.India's Mars Orbiter Mission is also called what?
Answer: A. Mangalyaan
It reached Mars orbit in 2014.
139.The NASA programme to return humans to the Moon is called what?
Answer: C. Artemis
Artemis I flew around the Moon without crew in 2022.
140.The Hubble Space Telescope is named after whom?
Answer: A. Edwin Hubble
It has orbited Earth since 1990.
141.The James Webb Space Telescope orbits near which point?
Answer: B. The second Lagrange point (L2)
L2 is about 1.5 million km from Earth.
142.The International Space Station orbits Earth about how often?
Answer: C. About every 90 minutes
It circles the Earth about 16 times a day.
143.At about what height does the International Space Station orbit?
Answer: D. About 400 km
It is in low Earth orbit.
144.The first space station, launched by the Soviet Union in 1971, was called what?
Answer: C. Salyut 1
Mir operated from 1986 to 2001.
145.The US space station of the 1970s was called what?
Answer: C. Skylab
Skylab was launched in 1973.
146.The Space Shuttle disaster of 2003 was which shuttle?
Answer: B. Columbia
Challenger was lost in 1986.
147.The first Muslim in space was a prince from which country?
Answer: A. Saudi Arabia
Sultan bin Salman flew on the Space Shuttle in 1985.
148.The first Arab astronaut to spend a long period on the ISS was from which country?
Answer: D. United Arab Emirates
Sultan Al Neyadi spent six months on the ISS in 2023.
149.What is the main gas in the atmosphere of Mars?
Answer: D. Carbon dioxide
Mars' thin atmosphere is about 95 per cent CO₂.
150.What is the main gas in the atmosphere of Titan?
Answer: C. Nitrogen
Titan's thick atmosphere is mostly nitrogen with methane.
Test yourself
Each quiz has 50 MCQs from this topic and 50 minutes. A correct answer earns 1 mark and each wrong answer takes off 0.25; skipped questions score nothing. No password needed.
