True/False – GK Questions

The Davis Cup is the premier international team event in MEN'S tennis. The equivalent women's team competition is the Billie Jean King Cup (formerly Fed Cup).

Dipa Karmakar competed at Rio 2016 and narrowly missed a bronze medal in vault. She is also known for performing the high-risk Produnova vault.

The NBA is primarily a United States-based professional basketball league, though it includes one Canadian team (Toronto Raptors). Its headquarters are in New York City.

Rugby Sevens is played with only 7 players per side on a full-size pitch, making it faster-paced than the traditional 15-a-side Rugby Union. It debuted at Rio 2016 Olympics.

Table Tennis made its Olympic debut at Seoul 1988. China has dominated the sport ever since, winning the majority of gold medals.

Both Lewis Hamilton and Michael Schumacher have won 7 F1 World Drivers' Championship titles, sharing the all-time record.

Neeraj Chopra won gold in men's javelin throw at Tokyo 2020 (held in 2021), marking India's first individual track-and-field Olympic gold and only the second individual gold overall after Abhinav Bindra (2008).

Brazil has qualified for and played in every single FIFA World Cup since 1930 without missing a single edition, a unique record in football history.

CO₂ + 4H₂ → CH₄ + 2H₂O recovers water from crew-exhaled CO₂; implemented on ISS and planned for Mars ISRU propellant production.

ECs match terrestrial O/Ti/Cr/Ni isotopes suggesting formation in same inner solar system reservoir; supports enstatite chondrite model for Earth's building blocks.

Internal/external occulters suppress stellar glare by factors >10⁶; essential for direct exoplanet imaging (JWST NIRCam/MIRI, future HabEx/LUVOIR).

Micius (China) demonstrated satellite-ground QKD in 2017; quantum no-cloning theorem ensures eavesdropping detection enabling secure key exchange.

Inside Roche limit (~2.44 planetary radii for fluid bodies), self-gravity cannot overcome tidal stress; explains ring locations inside this boundary.

BBN synthesized ~75% H, ~25% He-4, ppm D/He-3/Li-7; heavier elements formed later in stars/supernovae. Observed abundances validate standard cosmology.

Li-ion offers 2-3× energy density vs legacy chemistries, reducing battery mass/volume; qualified for GEO/LEO missions since 2000s.

Orbital resonances maintain eccentricities causing periodic tidal deformation; dissipated energy powers Io's volcanism and Enceladus's cryovolcanism.

Transition-edge sensor bolometers operate at cryogenic temps for far-IR/submm astronomy; used in Herschel/SOFIA/CMB experiments.

ClearSpace-1 (ESA, launch 2026) will demonstrate four-arm capture of Vespa adapter; commercial ADR services emerging to mitigate Kessler syndrome risk.

CAIs in chondrites define solar system age via U-Pb dating; formed at high temperatures near proto-Sun before accretion into planetesimals.

Λ in Einstein's equations corresponds to constant energy density of empty space; observational evidence favors ΛCDM model with Ω_Λ≈0.7.