Think of them like different-sized delivery vans: SSLV is the nimble two-wheeler for quick small packages (up to 500kg to LEO), PSLV is the reliable truck that’s done 104 satellites in one go, GSLV is the mid-sized carrier for heavy comms satellites, and LVM3? That’s the monster truck; “Bahubali”; ready to carry humans to space or send probes to the Moon’s south pole. What’s wild? SSLV can be readied in just 72 hours. No waiting weeks. And LVM3? It’s the only one human-rated; meaning it’s safe enough to carry astronauts. If you’re studying for UPSC or SSC, don’t memorize specs; understand the story: each rocket was built to solve a problem. SSLV for startups. PSLV for Earth observation. GSLV for independence in space. LVM3 for the future. The real test? Knowing why ISRO built four rockets instead of just one. Because one size never fits all; even in space.