RSMSSB Patwari flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Highest peak of Aravalli

Guru Shikhar, located on Mount Abu in Sirohi district, rises to about 1,722 metres and is the highest point of the Aravalli range and of Rajasthan.

Only perennial river of Rajasthan

The Chambal is the only perennial river flowing through Rajasthan. It originates in the Janapav hills of Madhya Pradesh and forms deep ravines in the Hadoti region.

Keoladeo Ghana National Park

A Ramsar wetland at Bharatpur in Rajasthan, famous as a bird sanctuary and former wintering ground of the Siberian Crane. It is a UNESCO World Heritage Site.

Kalbelia dance

A Rajasthan folk dance of the Kalbelia community, performed by women in swirling black skirts with serpentine movements. UNESCO recognised it as intangible cultural heritage in 2010.

Luni River

The principal river of the Thar desert basin, rising in the Naga hills near Ajmer and flowing southwest through Jodhpur and Barmer before draining into the Rann of Kutch.

Article 368

The constitutional article that lays down the procedure for amending the Constitution of India, including special majority requirements and, for federal provisions, ratification by half the states.

Fundamental Duties

Duties listed in Article 51A of the Indian Constitution, inserted by the 42nd Amendment in 1976 on the recommendation of the Swaran Singh Committee. They are non-justiciable.

UN Security Council veto

The power of the five permanent members of the UN Security Council to block any substantive resolution by a single negative vote. Membership comprises the USA, UK, France, Russia and China.

NITI Aayog

The National Institution for Transforming India, established in 2015 to replace the Planning Commission. It is a policy think tank chaired by the Prime Minister.

Chilika Lake

A large brackish-water lagoon on the Odisha coast, connected to the Bay of Bengal. It is famous for migratory birds and Irrawaddy dolphins.

Compound interest formula

Compound interest equals P(1 + R/100)^T minus P, where P is principal, R the annual rate and T the time in years. For half-yearly compounding, use R/2 and 2T.

Successive percentage change

When a quantity changes by a% and then by b%, the net change is a + b + ab/100 percent. Two successive discounts combine the same way but reduce the price.

Time and work formula

If A alone finishes a task in x days and B in y days, working together they finish it in xy/(x + y) days, since their one-day work rates add.

Heron's formula

For a triangle with sides a, b and c, area equals the square root of s(s − a)(s − b)(s − c), where s is the semi-perimeter (a + b + c)/2.

Weighted average

The weighted average equals the sum of each value multiplied by its weight, divided by the total of all weights. It differs from the simple average when weights are unequal.

Combination formula

The number of ways to choose r items from n without regard to order is nCr = n!/[r!(n − r)!]. For permutations, where order matters, nPr = n!/(n − r)!.

Relative speed

When two bodies move towards each other, relative speed is the sum of their speeds; when moving in the same direction, it is the difference. Time = distance / relative speed.

Simple interest

Simple interest equals P × R × T / 100, where P is principal, R the annual rate per cent and T the time in years. It is calculated on the original principal only.

Volume of a cone

The volume of a cone is one-third of the base area times height, that is (1/3)πr²h, where r is the base radius and h the perpendicular height.

Alphabet position trick

Assign A=1 through Z=26. The reverse position of a letter equals 27 minus its forward position, so A is 26th from the end and Z is 1st.

Syllogism with 'all' statements

In categorical reasoning, 'all A are B' plus 'all B are C' validly implies 'all A are C'. A 'some' conclusion is valid only if it holds in every possible Venn diagram.

Blood relation notation

In relation puzzles, draw a tree: vertical lines for parent-child, horizontal lines for siblings, and mark gender explicitly. This prevents confusion between paternal and maternal relatives.

Direction sense displacement

For perpendicular movements, the straight-line distance from start to finish is the square root of the sum of squares of net east-west and north-south displacements.

RAM versus ROM

RAM is volatile primary memory that loses its contents when power is cut and holds running programs. ROM is non-volatile and retains firmware permanently.

CPU components

The central processing unit contains the arithmetic logic unit, which performs calculations and comparisons, and the control unit, which directs instruction execution and data flow.

Cache memory

A small, very fast memory located close to or inside the CPU that stores frequently used data and instructions to reduce average access time compared with main memory.

LAN versus WAN

A local area network covers a small area such as an office or campus, while a wide area network spans cities or countries. The internet is the largest WAN.

Input and output devices

Input devices such as keyboards, mice and scanners send data into a computer. Output devices such as monitors, printers and plotters present results. Touchscreens serve both roles.

Number series strategy

Test the pattern in order: constant difference, then ratio, then squares or cubes, then alternating or mixed operations. Prime-number and two-interleaved-series patterns are also frequent.

Operating system role

System software that manages hardware resources, memory, files and processes, and provides a user interface so application programs can run on the computer.

1 kilobyte value

In binary computing, one kilobyte equals 1,024 bytes (2 to the power 10). Similarly, one megabyte equals 1,024 kilobytes and one gigabyte equals 1,024 megabytes.

HTTP and HTTPS

Protocols used by web browsers to request and receive web pages. HTTPS adds encryption through TLS, protecting data in transit between browser and server.