Static GK is not a separate section in RRB Group D, but it decides most of the paper's recall marks. General Science is 25 questions of Physics, Chemistry and Life Sciences at 10th standard (CBSE) level as per CEN 09/2025, and the 20 General Awareness questions lean on the standing facts behind the news: the sport, the award, the institution, the state, the river or the scientist an event touches. This page holds GK24's topic-wise GK notes for RRB Group D. The General Science notes go topic by topic through motion and force, work, energy and power, gravitation, heat, light, sound, electricity and magnetism, atomic structure and the periodic table, chemical reactions, acids, bases and salts, metals and non-metals, and carbon compounds, and the Life Sciences notes cover cells, the human body, nutrition, diseases, plants and genetics. The static GK notes cover Indian Railways zones and facts, national symbols, first and largest in India and the world, awards and honours, important days, books and authors, sports GK, art and culture, and the basics of Indian Polity, Geography, History and the Economy. Each note is short facts and tables that can be revised in one sitting. Read a note, then solve its quiz and the previous-year questions on this site to check what stayed.
The line joining the areas having the same rainfall is called:
An isohyet is a line drawn on a map through all the places that receive the same amount of rainfall in a given period.
Read the full explanation →In India, during October-November, with the apparent movement of the sun towards the south, the ______ over the northern plains becomes weaker.
The monsoon trough is the belt of low pressure that lies across the northern plains during the rainy season and guides the depressions that bring rain.
Read the full explanation →In which state of India is the rain caused by a lightning storm called Cherry Blossom?
The pre-monsoon thundery showers of Karnataka are called cherry blossom showers or blossom showers because they help the coffee plants of the Kodagu, Chikkamagaluru and Hassan belt to flower.
Read the full explanation →What causes rainfall on the coastal areas of Tamil Nadu in the beginning of winters?
As the monsoon retreats in October and November the wind direction reverses and air moves from the land towards the sea.
Read the full explanation →When white light passes through a prism, which colour is deviated the most?
White light is a mixture of colours, and the refractive index of the glass of a prism is slightly different for each of them, being greatest for violet and least for red.
Read the full explanation →Myopia, or short-sightedness, is corrected by using which type of lens?
In myopia the eyeball is too long or the lens of the eye too strongly converging, so rays from a distant object meet in front of the retina and the person cannot see far objects clearly.
Read the full explanation →Optical fibres used in communication work on the principle of:
An optical fibre is a thin thread of glass or plastic with a core of higher refractive index surrounded by a cladding of lower refractive index.
Read the full explanation →The formation of a mirage on a hot road is caused by:
On a hot day the air touching the road is heated and becomes rarer than the cooler air above it.
Read the full explanation →The power of a convex lens of focal length 50 cm is:
The power of a lens is the reciprocal of its focal length expressed in metres, that is P equals 1 divided by f. Fifty centimetres is 0.5 metre, and the reciprocal of 0.5 is 2, so the power is two dioptres.
Read the full explanation →Which type of mirror is used as a rear-view mirror in vehicles?
A convex mirror curves outward and spreads the light that falls on it, so it always forms a virtual, erect and diminished image, whatever the distance of the object.
Read the full explanation →The image formed by a plane mirror is always:
Rays reflected from a plane mirror diverge and only appear to come from a point behind the mirror, so the image cannot be caught on a screen and is virtual.
Read the full explanation →Name the scientist who first used a glass prism to obtain the spectrum of sunlight.
Newton passed a narrow beam of sunlight through a glass prism in a darkened room and obtained a band of seven colours on the wall, which he named the spectrum.
Read the full explanation →A concave lens has a focal length of 15 cm. If the object is placed at 30 cm from the lens, what is the image distance?
By the sign convention the focal length of a concave lens is negative, so f is minus 15 centimetres, and the object distance measured against the direction of the incident light is minus 30 centimetres.
Read the full explanation →A ray of light travelling from a rarer medium to a denser medium:
A denser medium has a higher refractive index, and the refractive index is the speed of light in vacuum divided by its speed in the medium, so light must travel more slowly inside it.
Read the full explanation →Which of the following is NOT a consequence of global warming?
That is the consequence of ozone depletion, a separate problem caused by chlorofluorocarbons thinning the ozone layer in the stratosphere, and it is addressed by the Montreal Protocol.
Read the full explanation →The headquarters of the International Solar Alliance is located at:
The International Solar Alliance was launched jointly by India and France at the Paris climate conference in 2015 to promote solar energy among countries that lie largely between the tropics, and its secretariat was established at the campus of the National Institute of Solar Energy at Gwal Pahari in Gurugram…
Read the full explanation →The Montreal Protocol is related to which environmental problem?
The Montreal Protocol was agreed in 1987 under the Vienna Convention to phase out the substances that destroy stratospheric ozone, chiefly chlorofluorocarbons used in refrigeration, air conditioning and aerosol sprays.
Read the full explanation →The National Action Plan on Climate Change of India, released in 2008, consists of how many national missions?
The National Action Plan on Climate Change was released in 2008 and is built around eight national missions: the National Solar Mission, the National Mission for Enhanced Energy Efficiency, the National Mission on Sustainable Habitat, the National Water Mission, the National Mission for Sustaining the Himalayan Ecosystem, the National Mission…
Read the full explanation →Which of the following gases has the highest global warming potential?
Global warming potential measures how much heat a mass of a gas traps over a chosen period compared with the same mass of carbon dioxide, which is given the value one.
Read the full explanation →Under the Paris Agreement of 2015, countries agreed to hold the rise in global average temperature to:
The Paris Agreement, adopted at the twenty-first Conference of the Parties in 2015 and in force from November 2016, commits its parties to holding the increase in the global average temperature to well below two degrees Celsius above pre-industrial levels and to pursuing efforts to limit the increase to one…
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