UPSC 2011 Geography PYQs with Answers

A VPN creates a secure encrypted connection over a public network such as the internet, allowing remote users to access an organization's private network securely.

Gujarat has arid and semi-arid northern regions, a major cotton-growing belt in central areas, and a strong cash-crop orientation. The other states do not fit all three clues together.

The Brahmaputra bends sharply around the eastern Himalayan syntaxis near Namcha Barwa. This syntaxial bending of the young Himalayas explains the U-turn into India.

Biodiversity generally increases toward lower latitudes due to warmer, more stable and productive environments. On mountains, lower altitudes usually support greater diversity than harsh high-altitude zones.

The lower stratosphere has very little water vapour, few clouds and weak vertical air movement compared with the troposphere. This stable layer allows smoother jet aircraft flight.

The African-Eurasian desert belt lies largely around subtropical high-pressure zones where descending dry air suppresses rainfall. Warm currents usually increase moisture; deserts are more often intensified by cold currents, so statement 2 is incorrect.

The lower Gangetic plain is hot and humid with abundant water, favouring paddy and jute. Wheat and cotton suit drier or cooler conditions than this region generally provides.

A canal across the Kra Isthmus would bypass the longer route through the Malacca Strait and reduce distance/time between India and East Asia. Deepening Malacca would not significantly shorten the route.

Southern Hemisphere westerlies face less interruption from landmasses and large mountain barriers, so they are stronger and more persistent. Coriolis force depends on latitude, not hemisphere, so statement 2 is wrong.

Disinvestment receipts are not mainly intended for external debt repayment, and disinvestment does not necessarily mean giving up management control. Many CPSE disinvestments involve partial stake sale while retaining control.

Mangroves have dense, extensive root systems that bind soil, absorb wave energy and resist storm surges better than bare coasts. This makes them a natural protective barrier during tsunamis and cyclones.

Blu-ray supports high-definition video and has much higher storage capacity than DVD. Both discs are about 1.2 mm thick, so the statement about BD being 2.4 mm is incorrect.

CFLs use mercury vapour and phosphor, while LEDs use semiconductor material. LEDs generally last longer and are more energy-efficient than CFLs, so statements 1 and 3 are correct and statement 2 is wrong.

Micro-irrigation reduces water and nutrient loss through controlled application and can help slow groundwater depletion in some areas. It is not the only means of irrigation in dryland farming.

Bluetooth commonly uses the 2.4 GHz band for short-range personal-area communication. Wi-Fi can use 2.4 GHz and 5 GHz bands; the other statements incorrectly describe WLAN/WWAN use and line-of-sight requirements.

La Nina is cooling of the equatorial Pacific, not the Indian Ocean. It can influence India's monsoon, often favouring stronger monsoon conditions, so both statements are incorrect.

The Finance Commission recommends distribution of tax revenues between Union and States and grants-in-aid principles. The listed statements do not describe its constitutional role, so none is correct.

Southeast Asia sits between the Pacific and Indian Oceans and contains vital sea lanes such as the Malacca Strait. Its maritime location explains its long-term geostrategic importance better than any single historical episode.

Brent is a major benchmark classification of crude oil sourced from the North Sea. It is low-sulphur or sweet crude, but not sulphur-free, so statement 3 is incorrect.

Aam Admi Bima Yojana covered the head or earning member of rural landless households and included scholarship benefits for up to two eligible children. The eligible age band was 18-59 years, not 30-65 years.

The ionosphere reflects/refracts some radio waves because of ionized particles, not ozone. Also, radio communication through the ionosphere depends on frequency bands, so the broad statement about very long wavelength is not the correct reason here.

The Himalaya lies at the meeting point of multiple biogeographical realms and has sharp altitudinal and climatic gradients. This creates many habitats and high species diversity.

Microbial fuel cells use microbes as biocatalysts to oxidize mainly organic substrates and generate electricity. They can be coupled with wastewater treatment, but statement 2 is wrong because the usual substrates are organic matter, not a variety of inorganic materials.

Gene/DNA mapping helps identify genetic lineage or pedigree and supports breeding for disease resistance. It cannot by itself reveal the causes of all human diseases, many of which are multifactorial and environmental as well as genetic.