Correct Answer: B) Hydrogen
Explanation: The Sun’s core is primarily composed of hydrogen, which undergoes nuclear fusion to produce helium and release energy.
A) Voyager 1
B) New Horizons
C) Cassini
D) Juno
Correct Answer: B) New Horizons
Explanation: The New Horizons mission provided the first detailed images and scientific data of Pluto’s surface when it flew by in 2015.
A) Iron
B) Hydrogen
C) Helium
D) Carbon
Correct Answer: B) Hydrogen
Explanation: The Sun’s core is primarily composed of hydrogen, which undergoes nuclear fusion to produce helium and release energy.
A) Andromeda Galaxy
B) Triangulum Galaxy
C) Messier 87
D) Large Magellanic Cloud
Correct Answer: D) Large Magellanic Cloud
Explanation: The Large Magellanic Cloud is the closest galaxy to the Milky Way, located about 160,000 light-years away.
A) Earth
B) Mars
C) Venus
D) Mercury
Correct Answer: B) Mars
Explanation: Olympus Mons on Mars is the tallest volcano in the solar system, standing about 22 kilometers (13.6 miles) high.
A) Fiber-optic cables
B) Satellite internet
C) Cable modems
D) Digital Subscriber Line
Correct Answer: D) Digital Subscriber Line
Explanation: DSL technology increases internet speeds over traditional copper phone lines by using different frequency bands for data transmission.
A) JavaScript
B) Python
C) C++
D) Java
Correct Answer: A) JavaScript
Explanation: JavaScript is widely used in web development for creating interactive and dynamic web content.
A) 3D printing
B) Virtual Reality
C) Augmented Reality
D) Digital twins
Correct Answer: D) Digital twins
Explanation: Digital twins involve creating digital replicas of physical objects to monitor and analyze their performance in real-time.
A) Optical zoom
B) Image stabilization
C) Digital signal processing
D) High dynamic range (HDR)
Correct Answer: C) Digital signal processing
Explanation: Digital signal processing (DSP) is used to enhance image resolution and quality by improving the way digital images are captured and processed.
A) GPS
B) GLONASS
C) Galileo
D) All of the above
Correct Answer: D) All of the above
Explanation: GPS, GLONASS, and Galileo are satellite systems used for global navigation and positioning services, providing accurate location data.
A) Energy storage
B) High-speed computing
C) Magnetic resonance imaging
D) Conducting electricity with zero resistance
Correct Answer: D) Conducting electricity with zero resistance
Explanation: Superconductors conduct electricity with zero resistance, making them useful in applications like MRI machines and particle accelerators.
A) Fiber-optic cables
B) Satellite communication
C) Bluetooth
D) DSL
Correct Answer: B) Satellite communication
Explanation: Satellite communication enables wireless communication over long distances, especially in remote or underserved areas.
A) Compound microscope
B) Scanning tunneling microscope
C) Transmission electron microscope
D) Fluorescence microscope
Correct Answer: C) Transmission electron microscope
Explanation: A Transmission Electron Microscope (TEM) uses electron beams to achieve high-resolution imaging of specimens at the atomic level.
A) Gallium
B) Phosphorus
C) Sodium
D) Silver
Correct Answer: A) Gallium
Explanation: Gallium is used in the production of LEDs, particularly in the form of gallium arsenide (GaAs) and gallium nitride (GaN) for efficient light emission.
A) India
B) Russia
C) USA
D) China
Correct Answer: B) Russia
Explanation: In 2024, Russia announced the successful testing of its latest hypersonic missile, showcasing advancements in high-speed weaponry technology.
A) Apollo 11
B) Luna 2
C) Chang’e 4
D) Lunar Reconnaissance Orbiter
Correct Answer: C) Chang’e 4
Explanation: The Chang’e 4 mission, launched by China, was the first to successfully land on the far side of the Moon in January 2019.
A) Dragon
B) Cygnus
C) Soyuz
D) Dream Chaser
Correct Answer: A) Dragon
Explanation: SpaceX’s Dragon spacecraft was the first private spacecraft to dock with the ISS, marking a significant milestone in commercial spaceflight.
A) Juno
B) Europa Clipper
C) Voyager
D) Cassini
Correct Answer: B) Europa Clipper
Explanation: The Europa Clipper mission is designed to study Jupiter’s moon Europa, focusing on its icy surface and potential subsurface ocean.
A) To study Saturn
B) To investigate Venus
C) To observe asteroids
D) To explore Mercury
Correct Answer: D) To explore Mercury
Explanation: The BepiColombo mission, a collaboration between ESA and JAXA, is designed to explore Mercury and study its surface and magnetic field.
A) Hubble
B) Chandra
C) Swift
D) Fermi
Correct Answer: D) Fermi
Explanation: The Fermi Gamma-ray Space Telescope observes gamma-ray bursts and other high-energy phenomena in the universe.
A) Curiosity
B) Opportunity
C) Perseverance
D) Spirit
Correct Answer: C) Perseverance
Explanation: The Perseverance rover was sent to Mars to search for signs of past life and collect samples for future missions.
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