Why Correct: Edwin Land invented the Polaroid instant camera in 1948, which produced a developed photograph within minutes using a self-developing film.
Distractor Analysis: William Clark was a surgeon, not related to camera invention. Michael Brack and Sir White are not associated with Polaroid or instant photography.
Takeaway: The first Polaroid camera was the Model 95 Land Camera. Instant photography revolutionized photography by eliminating the need for darkroom processing.

Why Correct: NASA's Kepler space telescope, launched in 2009, discovered thousands of exoplanets, including a batch of 26 new planets announced in early 2012.
Distractor Analysis: Galileo telescope (ground-based, Canary Islands) is not NASA's exoplanet hunter. Copernicus is a European Earth observation satellite program. Bose Telescope (Bose Institute, India) is a ground-based observatory, not NASA's.
Takeaway: Kepler is purpose-built for exoplanet detection; its successor is TESS. Know: Kepler → exoplanets, Hubble → deep space, James Webb → infrared.

Why Correct: Sailor is a well-known Japanese manufacturer of fountain pens, established in 1911 in Hiroshima. It is one of the 'Big Three' Japanese pen brands along with Pilot and Platinum, and is famous for its high-quality nibs.
Distractor Analysis: Voltas is an Indian engineering and air-conditioning company, not a pen manufacturer. Hundai (Hyundai) is a South Korean automobile manufacturer. Kirloskar is an Indian industrial conglomerate known for pumps, engines, and compressors, not pens.
Takeaway: The 'Big Three' Japanese fountain pen manufacturers are Sailor, Pilot, and Platinum. Sailor's signature feature is its 'nagahara' nibs, which are hand-ground and highly regarded by pen enthusiasts.