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General Knowledge for Competitive Exams

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Minerals: Definition, Property and Uses

A mineral is mostly a compound that is usually crystalline in nature and is a result of geological progressions.

What is Groundwater?

Groundwater is the water that lies below the surface of the ground and fills the pore space as well as cracks and other openings.

Earth’s Interior (Structure of the Earth)

The structure of earth is in spherical form and is composed of four layers, three solid and one liquid.

What is Drainage System?

Drainage pattern is an important geographic factor for river basin.

What is Artesian Basin?

An artesian basin is a low-lying region where groundwater is cramped under pressure from surrounding layers of rock.

El Nino and La Nina

El Nino refers to the warm phase of the El Nino Southern Oscillation (ENSO) and the cool phase of ENSO is called La Nina.


Humidity refers to the amount of water vapor (H2OV) present in the atmosphere.

Weather Disturbances

Weather is the state of the atmosphere, to the degree that it is hot or cold, wet or dry, calm or stormy, clear or cloudy.


Precipitation occurs when a portion of the atmosphere becomes saturated with water vapour, so that the water condenses and "precipitates".

Earth’s heat budget and its radiation balance

Earth's heat-budget or Earth's radiation balance refers to the net flow of energy into Earth in the form of shortwave radiation and the outgoing infrared long-wave radiation into space.

Weathering and Erosion

If a rock particle is loosened, chemically or mechanically, but remains there itself, it is called weathering.

What is a Volcano?

Literally, the word volcano comes from the name of the Roman God of Fire, Vulcan.

The Solar System

The Solar System constitutes the Sun and the objects that orbit it directly as well as those which orbit other objects that orbit it directly.

Standard Time and Time Zones

Standard Time is the harmony of clocks in various geographical locations within a time zone to a common time standard.

Space Explorations

This covers the telescopic study of space by astronomers, and the physical investigation by robotic probes as well as human spacecraft.

Origin of Universe: Big Bang Theory

It is believed that universe originated around 15 billion years ago.

What is a Black Hole?

A black hole is defined as an area of space with a gravitational field extremely severe that no matter or radiation can escape.


An eclipse of the Sun takes place when the Moon comes unswervingly between the Sun & the Earth so that the Earth lies in the silhouette of the Moon.

Asteroids, Comets, Meteorites

Asteroids are rocky remains left over from the formation of solar system. Comets are comparatively small, flimsy, erratically shaped bodies.

Largest Islands of the world

Let us have a look at the largest islands of the world. Australia is broadly considered as the continental landmass, not an island. In fact, it unquestionably is the largest island, with the size of 7,618,493 sq km.

Important tribes across the world and their homeland

Here you can find the list of important tribes and their homeland.

Continents: Lowest Points

A continent is one of several very large landmasses on Earth.

Continents: Highest Points

Continents are understood to be large, continuous, discrete masses of land, ideally separated by expanses of water.

Continents: Number

The continents are the great land masses of the earth. There are seven continents on Earth.

Magnetic Field


A magnet produces a vector field, the magnetic field, at all points in the space around it. It can be defined by measuring the force the field exerts on a moving charged particle, such as an electron.  



The lithosphere is the outer solid part of the earth, including the crust and uppermost mantle.


The Cryosphere is an Imperial space station in the Music star system, which is considered to be of major strategic importance.

Tectonic Plates

A tectonic plate is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere.

Atmospheric Circulation

Atmospheric circulation is a movement of air at a larger scale by which the earth's surface is covered and distributed over by thermal energy

Rutherford Scattering

Rutherford Scattering is a phenomenon explained by Ernest Rutherford in 1911

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