INS Arihant belongs to which submarine category?

Correct Answer: Option B — Nuclear-powered ballistic missile submarine. Nuclear-powered ballistic missile submarine is the accurate answer because INS Arihant is India’s indigenous nuclear-powered ballistic missile submarine platform. This identifying fact establishes its correct connection with strategic submarine and distinguishes it from the other defence-related choices. Why the other options are incorrect: Option A — Heavy-lift transport helicopter: This is actually associated with transport helicopter; specifically, the tandem-rotor Chinook carries troops, artillery, equipment and supplies in heavy-lift missions. Option C — 15 January: This is actually associated with commemorative day; specifically, the day commemorates Lieutenant General K. Option D — Bengaluru: This is actually associated with defence public-sector enterprise; specifically, HAL’s major aerospace design, manufacturing and corporate functions are associated with Bengaluru. Exam Takeaway: Link Nuclear-powered ballistic missile submarine with its exact strategic submarine association for fast Indian Defence GK revision.