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.
Down syndrome is caused by an extra copy of which chromosome?
A person with Down syndrome carries three copies of chromosome 21 instead of two, a condition called trisomy 21, so the total chromosome number is 47 rather than 46.
Read the full explanation →How many pairs of autosomes are present in a normal human body cell?
A human body cell has 46 chromosomes arranged in 23 pairs, of which 22 pairs are autosomes, the chromosomes that are alike in both sexes, and the remaining pair is of sex chromosomes, XX in a female and XY in a male.
Read the full explanation →Which nitrogenous base is present in RNA but absent in DNA?
RNA carries adenine, guanine, cytosine and uracil, and the uracil occupies the place that thymine holds in DNA, pairing with adenine in the same way.
Read the full explanation →The double helix model of DNA was proposed in 1953 by which pair of scientists?
James Watson and Francis Crick published the double helix model in 1953, with two strands running in opposite directions and bases paired on the inside, using the X-ray diffraction photographs produced by Rosalind Franklin and Maurice Wilkins; Watson, Crick and Wilkins shared the Nobel Prize in 1962.
Read the full explanation →Who coined the term gene, along with the terms genotype and phenotype?
The correct answer is B, Wilhelm Johannsen, the Danish botanist who gave the words gene, genotype and phenotype, distinguishing the hereditary constitution of an organism from its visible expression.
Read the full explanation →The 9 : 3 : 3 : 1 ratio obtained in the second generation of a dihybrid cross demonstrates which of Mendel's laws?
In a dihybrid cross two pairs of characters are followed together, for example seed shape and seed colour, and the appearance of all four combinations in the proportion nine to three to three to one shows that the inheritance of one pair does not depend on the inheritance of the…
Read the full explanation →In a monohybrid cross, what is the phenotypic ratio in the second filial generation?
When two heterozygous plants of the first generation are crossed, three quarters of the offspring show the dominant character and one quarter the recessive one, because the recessive appears only when both factors in the pair are recessive.
Read the full explanation →Gregor Mendel carried out his classical experiments on inheritance using which plant?
Mendel chose it because it breeds true, is easy to cross by hand, completes a generation in a single season and offers seven pairs of sharply contrasting characters such as tall against dwarf stem and round against wrinkled seed.
Read the full explanation →Which of the following was one of the nine tiger reserves with which Project Tiger started?
Manas in Assam, a World Heritage Site on the Bhutan border, was one of the nine reserves notified when Project Tiger began in 1973, along with Corbett, Kanha, Ranthambore, Bandipur, Melghat, Simlipal, Palamau and the Sundarbans.
Read the full explanation →The core area of a tiger reserve is notified as a critical tiger habitat under which Act?
Section 38V of that Act, inserted in 2006, requires the State government to notify a tiger reserve on the recommendation of the National Tiger Conservation Authority, with a core or critical tiger habitat to be kept inviolate and a buffer area in which coexistence is allowed, and to prepare a…
Read the full explanation →Periyar Tiger Reserve is situated in which state?
Periyar Tiger Reserve lies in the Idukki and Pathanamthitta districts of Kerala, around the Periyar reservoir created by the Mullaperiyar dam, and Kerala's other tiger reserve is Parambikulam.
Read the full explanation →Global Tiger Day is observed every year on which date?
Global Tiger Day, also called International Tiger Day, was adopted at the St Petersburg tiger summit of 2010, where the thirteen tiger range countries agreed on the goal of doubling wild tiger numbers.
Read the full explanation →Which tiger reserve was found to have lost all its tigers in 2004-05, leading to the appointment of the Tiger Task Force?
The Alwar district reserve in Rajasthan was found in 2004 and 2005 to have no tigers left, the result of poaching and weak protection.
Read the full explanation →Buxa Tiger Reserve is located in which state?
Buxa Tiger Reserve lies in the Alipurduar district of north Bengal in the Dooars, against the Bhutan border, and was notified in 1983.
Read the full explanation →Bor Tiger Reserve, often asked as the smallest tiger reserve of India, is situated in which state?
Bor Tiger Reserve lies in the Wardha district of Maharashtra, near Nagpur, and is the smallest tiger reserve in the country; it is part of the central Indian landscape that also holds Tadoba-Andhari, Pench, Melghat and Navegaon-Nagzira.
Read the full explanation →Which is the largest tiger reserve in India by area?
Spread across the Nallamala hills in Andhra Pradesh and Telangana along the Krishna river, it is the largest tiger reserve in the country by area, and its division between two States after 2014 is itself a question.
Read the full explanation →Which of the following is the oldest national park in India and also one of the first tiger reserves?
It was notified in 1936 as Hailey National Park, the first national park in India, was later renamed after the hunter turned conservationist Jim Corbett, and was among the nine reserves with which Project Tiger started in 1973.
Read the full explanation →The National Tiger Conservation Authority was constituted under which law?
Acting on the report of the Tiger Task Force appointed after the loss of the tigers of Sariska, Parliament amended the Act of 1972 in 2006 to insert Chapter IV-B, which created the National Tiger Conservation Authority and also the Wildlife Crime Control Bureau.
Read the full explanation →Project Tiger was launched by the Government of India in which year?
Project Tiger began on 1 April 1973 as a centrally sponsored scheme with nine reserves, after the tiger replaced the lion as the national animal and a census showed a steep fall in numbers.
Read the full explanation →How many Members of Parliament took part in the Walk for Nasha Mukt Yuva?
Among the public representatives who joined the walk at different venues were 8 Members of Parliament, along with 2 Lieutenant Governors, 1 Union Cabinet Minister and 8 Members of Legislative Assemblies.
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