Rajasthan 2018 Previous Year GK Questions with Answers

The correct answer is B, Proxy Firewall. A proxy firewall, also called an application gateway, stands between the client and the server as a stand-in for both, opens each message and filters it at the application layer, so it can read a URL, a command or an attachment before passing the request on. Because it must understand the protocol it guards, a separate proxy is written for each service, and HTTP, FTP and SMTP proxies are the common ones. Option A, the packet filter firewall, reads only the IP header and the port number at the network and transport layers and cannot see what a message contains. Option C, the stateful inspection firewall, goes a step further by tracking the state of every connection, but it still works at the transport layer. Option D, the next-generation firewall, is a product category that bundles several of these techniques rather than the classical firewall defined by application layer filtering. Exam tip: a packet filter reads headers, a proxy reads the message itself.

The correct answer is B, Drupal. Drupal is a content management system, a free program used to build and run websites; it keeps its pages in a database but is not itself a database management system. A DBMS is the software layer that creates, stores, queries and secures data, and the other three names are all DBMS products. Option A, Oracle, is the commercial relational database widely used by banks and large businesses. Option C, MySQL, is the open source relational database that a large share of the web runs on; Drupal and WordPress in fact store their content in a MySQL database, which shows the difference between the two kinds of software. Option D, MS Access, is the small desktop database that ships with Microsoft Office and keeps tables, queries, forms and reports in a single file. Exam tip: Oracle, MySQL, MS Access, SQL Server and PostgreSQL are database managers; Drupal, Joomla and WordPress are content management systems.

The correct answer is A, Rajasthan Renewable Energy Corporation Ltd. RRECL, with its office in Jaipur, is the state nodal agency of the Ministry of New and Renewable Energy for developing power from non-conventional sources in Rajasthan. It promotes solar, wind, biomass and small hydro projects and develops the state's solar parks. The strong, steady sunshine of the Thar region and the wind corridor around Jaisalmer make Rajasthan one of the country's main sources of renewable power. Option B, the Rajasthan State Electricity Board, was the old integrated utility and was unbundled in 2000 into separate generation, transmission and distribution companies, so it is not the nodal agency. Option C is not a real body. Option D, Jaipur Vidyut Vitaran Nigam Ltd., is one of the state's three discoms and only distributes power to consumers in its region. Exam tip: every state has one MNRE nodal agency for renewable energy — in Rajasthan it is RRECL.

The correct answer is C, Tropical Dry Deciduous Forest. Tropical dry deciduous forest covers the largest share of India's forest area. It grows in the wide belt that gets roughly 70 to 100 cm of rain a year — much of the peninsular plateau, central India, the eastern slopes of the Western Ghats and parts of the plains — and its trees, teak, sal, sandalwood, bamboo, khair and axlewood, shed their leaves in the dry months to save water. These forests are the most used for timber and were the most cleared for cultivation. Option A, tropical dry evergreen forest, is confined to a narrow strip along the Coromandel coast of Tamil Nadu and Andhra Pradesh. Option B, tropical semi evergreen forest, lies on the wetter margins of the Western Ghats, in the north east and in the Andamans. Option D, Himalayan moist temperate forest, is a mountain type between about 1,500 and 3,000 metres, with oak, deodar and pine. Exam tip: rainfall decides the type — above 200 cm evergreen, 100 to 200 cm moist deciduous, 70 to 100 cm dry deciduous.

The correct answer is C, 10 Joule. Potential difference is defined as the work done for each unit of charge carried between two points, so V = W/Q and therefore W = QV. Here the charge is 2 coulomb and the potential difference is 5 volt, which gives work of 2 into 5, that is 10 joule. The definition is the whole question: one volt is one joule per coulomb, so a charge of two coulomb moving across five volt must take ten joule of work. Option A, 0.4 joule, comes from dividing the charge by the voltage instead of multiplying. Option B, 2.5 joule, comes from dividing the voltage by the charge, which gives volt per coulomb and not an energy at all. Option D, 20 joule, is double the right value and would need a charge of 4 coulomb or a potential difference of 10 volt. Exam tip: W = QV, and one volt means one joule of work for every coulomb of charge.

The correct answer is D, Ministry of Education. The National Digital Library of India is a single window that brings together lakhs of learning resources, from school books to research papers, and lets a student search them free of cost in many Indian languages. It is developed by IIT Kharagpur under the National Mission on Education through Information and Communication Technology, a mission of the Ministry of Education; the ministry was called the Ministry of Human Resource Development when the library was launched and was renamed in 2020. Option A is wrong because the Ministry of Finance handles the budget, taxes and public spending, not education platforms. Option B is wrong because India has no ministry of that name; Science and Technology is a separate ministry of its own. Option C is wrong because the electronics and information technology ministry runs Digital India, e-governance services and BharatNet, but not this library. Exam tip: National Digital Library of India means IIT Kharagpur, the NMEICT mission and the Ministry of Education.

The correct answer is B, Westerlies Winds. The westerlies blow from the subtropical high pressure belt towards the subpolar low, which makes them south-westerly in the northern hemisphere and north-westerly in the southern. Between 40 and 50 degrees south there is almost no land to slow them down, so over the Southern Ocean they blow strong and steady all year and sailors named them the Roaring Forties. Further south they are called the Furious Fifties and the Shrieking Sixties. Option A is wrong because the polar easterlies are cold, dry winds that move from the polar high towards the sixty degree latitudes. Option C is wrong because the trade winds blow from the subtropical highs towards the equator, north-easterly above the equator and south-easterly below it, and once carried sailing ships on their trade routes. Option D is wrong because the doldrums is not a wind at all but the belt of calm near the equator along the inter-tropical convergence zone. Exam tip: forties roar, fifties are furious, sixties shriek, and all three are westerlies.