Soil Survey Officer / Research Assistant / Cartographer / Technical Assistant — 2015 — Official Paper — Kerala PSC PYQ Practice with Answers

Correct answer (Option D):\nA barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short-term changes in the weather. Multiple measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems, and frontal boundaries.\nOption D is correct.\n\nWhy others are wrong:\nOption A measures wind speed. Option B measures temperature. Option C measures humidity or moisture content in the atmosphere.\n\nStudy tip:\nMeteorological instruments are frequently tested in scientific and general knowledge portions of State PSC exams. Remember that Evangelista Torricelli is credited with inventing the barometer.

Correct answer (Option D):\nKalpadhenu is the official agricultural Malayalam magazine published by the Kerala Agricultural University (KAU). It delivers scientific knowledge, modern package of practices, research findings, and farm innovations directly to regional farmers and students.\nOption D is correct.\n\nWhy others are wrong:\nOption A and Option B are leading commercial agricultural magazines published by private media houses in Kerala. Option C is a prominent publication brought out by the Farm Information Bureau (FIB) of the Government of Kerala.\n\nStudy tip:\nKerala Agricultural University is headquartered at Vellanikkara in Thrissur. Important state institutional periodicals are core areas under Kerala governance and agricultural general knowledge.

Correct answer (Option B):\nThe Yellow Revolution targets a significant increase in the production of oilseeds to achieve self-reliance, primarily focusing on mustard, groundnut, and sesame. Launched in 1986-1987, Sam Pitroda is widely recognized as the father of this technological transformation.\nOption B is correct.\n\nWhy others are wrong:\nOption A refers to the White Revolution (Operation Flood). Option C relates to the Blue Revolution. Option D is associated with the Silver/Muted growth initiatives, but structural pulse enhancement belongs to the overall Evergreen or Rainbow models.\n\nStudy tip:\nAgricultural revolutions are high-yield topics. Remember: Green = Food grains, Pink = Prawn/Onion, Grey = Fertilizers, Round = Potato.

Correct answer (Option C):\nVyttila 8 is a specialized saline-tolerant red rice variety developed by the Rice Research Station, Vyttila, under the Kerala Agricultural University. It is tailored for cultivation in the unique coastal saline ecosystems like Pokkali fields.\nOption C is correct.\n\nWhy others are wrong:\nOption A is a white-kernelled saline tolerant variety. Option B is a photo-insensitive high-yielding selection. Option D is a popular high-yielding white rice crop.\n\nStudy tip:\nLocally developed crop varieties from KAU stations like Vyttila, Pattambi, and Moncompu feature regularly in Kerala technical agriculture segments.

Correct answer (Option C):\nSplash erosion is the first stage of the water erosion process. It occurs when raindrops impact the bare soil surface directly, detaching individual soil particles and breaking down the surface crumbs.\nOption C is correct.\n\nWhy others are wrong:\nOption A is an advanced stage where small distinct channels form. Option B is the second stage where uniform thin layers of topsoil are removed. Option D represents the most severe and final phase where deep ravines are cut.\n\nStudy tip:\nThe chronological order of water-induced soil erosion stages is crucial for soil science exams: Splash → Sheet → Rill → Gully erosion.