Space & Science — Set 4

Correct Answer: D. Liquid Crystal Display

• **Liquid Crystal Display** = LCD is a display technology that uses the light-modulating properties of liquid crystals. • LCD technology became dominant in the **2000s** for many display applications. • 💡 Wrong-option analysis: Light Crystal Device: incorrect expansion; Low Current Display: incorrect expansion; Liquid Color Display: incorrect expansion.

Correct Answer: C. Geosynchronous Satellite Launch Vehicle Mark III

• **Geosynchronous Satellite Launch Vehicle Mark III** = GSLV Mk III is India's most powerful launcher. • It has been renamed **LVM3** (Launch Vehicle Mark 3) and was used for Chandrayaan-2 and Chandrayaan-3. • 💡 Wrong-option analysis: Geostationary Space Launch Vehicle Mark III: incorrect term 'Space' instead of 'Satellite'; General Satellite Launch Vehicle Mark III: incorrect word 'General'; Global Science Launch Vehicle Mark III: incorrect words 'Global Science'.

Correct Answer: D. Physical Research Laboratory

• **Physical Research Laboratory** = PRL is an ISRO-associated lab in Ahmedabad, founded by Dr. Vikram Sarabhai. • It was founded in **1947** and is considered the cradle of space sciences in India. • 💡 Wrong-option analysis: Primary Research Lab: incorrect term 'Primary'; Physics Research Lab: incorrect full form; Payload Research Laboratory: incorrect term 'Payload'.

Correct Answer: D. Compact Disc Read-Only Memory

• **Compact Disc Read-Only Memory** = CD-ROM is an optical disc that contains data which can be read but not modified. • It was a primary medium for software distribution in the late **1990s**. • 💡 Wrong-option analysis: Circular Disc Read-Only Memory: incorrect term 'Circular'; Central Disc Read-Only Memory: incorrect term 'Central'; Compact Data Read-Only Memory: incorrect term 'Data'.

Correct Answer: A. Global Positioning System

• **Global Positioning System** = GPS is a satellite-based system that provides geolocation and time information. • It relies on a network of **satellites** orbiting the Earth. • 💡 Wrong-option analysis: Global Positioning Satellite: incorrect term 'Satellite' instead of 'System'; Geographic Positioning System: incorrect term 'Geographic'; General Purpose System: incorrect full form.

Correct Answer: B. An ISRO web portal for 2D/3D Earth imagery

• **An ISRO web portal for 2D/3D Earth imagery** = Bhuvan is ISRO's geo-portal providing visual representations of Earth's surface. • It offers high-resolution satellite imagery for various Indian regions and is extensively used for mapping and urban planning since its launch in **2009**. • 💡 Wrong-option analysis: A research project for lunar soil: incorrect description; A soil mapping robot: incorrect description; A satellite for monitoring clouds: incorrect description.

Correct Answer: A. Deoxyribonucleic Acid

• **Deoxyribonucleic Acid** = DNA is the molecule that carries genetic instructions for all known living organisms. • It consists of **two strands** that wind around each other like a twisted ladder. • 💡 Wrong-option analysis: De-nitric Acid: incorrect full form; Digital Nucleic Acid: incorrect full form; Double Nucleic Acid: incorrect full form.

Correct Answer: B. Radio-Frequency Identification

• **Radio-Frequency Identification** = RFID uses electromagnetic fields to automatically identify and track tags attached to objects. • This technology is commonly used in **FASTags** for electronic toll collection. • 💡 Wrong-option analysis: Radio-Frequency Information Device: incorrect term 'Information Device'; Radar-Frequency Identification: incorrect term 'Radar'; Remote-Frequency Identification: incorrect term 'Remote'.

Correct Answer: D. Unmanned Aerial Vehicle

• **Unmanned Aerial Vehicle** = UAV, commonly known as a drone, is an aircraft without a human pilot on board. • UAVs are widely used for surveillance, aerial photography, and **agriculture**. • 💡 Wrong-option analysis: Unmanned Aerospace Vehicle: incorrect term 'Aerospace'; Universal Aerial Vehicle: incorrect term 'Universal'; United Aerial Vehicle: incorrect term 'United'.

Correct Answer: B. National Aeronautics and Space Administration

• **National Aeronautics and Space Administration** = NASA is the civil space agency of the United States. • It has been responsible for the Apollo moon landing missions and the Space Shuttle program since its founding in **1958**. • 💡 Wrong-option analysis: National Association of Space Applications: incorrect term 'Association' and 'Applications'; National Aerospace and Science Agency: incorrect full form; Native American Space Association: incorrect full form.