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.
Which river crosses the Equator twice?
Its enormous basin lies on both sides of the Equator, so the river cuts the line twice before reaching the Atlantic.
Read the full explanation →Which is the highest peak of Africa?
Its highest summit is Kibo, also called Uhuru peak, and it stands close to the Equator yet carries snow and shrinking glaciers, a favourite illustration of climate changing with altitude.
Read the full explanation →Which of the following sexually transmitted infections cannot be completely cured?
It is caused by a virus that stays latent in the nerve cells for life, so the attacks can be controlled with medicines but the infection cannot be completely cured; hepatitis B and HIV infection fall in the same group.
Read the full explanation →Why is colostrum, the first milk secreted after childbirth, important for the newborn?
Colostrum is the thin yellowish milk secreted in the first days after delivery and is rich in antibodies, especially immunoglobulin A, which pass to the baby and protect it from infection at a stage when its own immune system is immature; this protection is called passive immunity.
Read the full explanation →The Medical Termination of Pregnancy Act was amended in which year to raise the upper limit to twenty-four weeks for certain categories of women?
The amendment of 2021 kept termination up to twenty weeks on the opinion of one registered medical practitioner, allowed it between twenty and twenty-four weeks for certain categories of women such as survivors of rape or incest on the opinion of two practitioners, and removed the upper limit where a…
Read the full explanation →Saheli, the non-steroidal oral contraceptive pill, was developed at which Indian institute?
Saheli contains centchroman and is a non-steroidal pill taken once a week after an initial daily course, which makes it different from the combined hormonal pills that have to be taken daily and carry hormonal side effects.
Read the full explanation →In a normal 28 day menstrual cycle, ovulation occurs around which day and because of which hormone?
Rising oestrogen from the ripening follicle triggers a sharp rise in LH from the anterior pituitary in the middle of the cycle, and this surge bursts the mature Graafian follicle and releases the ovum.
Read the full explanation →Which hormone is secreted by the corpus luteum?
After ovulation the ruptured Graafian follicle turns into the yellow body called the corpus luteum, which secretes large amounts of progesterone to thicken and maintain the endometrium for implantation.
Read the full explanation →Which hormone is detected to confirm pregnancy in a urine test?
It is secreted by the trophoblast of the implanted blastocyst and then by the placenta, appears in the blood and urine within a few weeks of conception, and is unique to pregnancy, so test kits use antibodies against it.
Read the full explanation →The acrosome present in the head of a sperm contains
The acrosome is a cap-like structure over the sperm nucleus filled with enzymes that digest the layers around the egg so that one sperm can fuse with it.
Read the full explanation →What is the main function of the Sertoli cells in the testis?
Sertoli cells line the seminiferous tubules and provide nutrition and support to the germ cells as they divide and change into sperms, which is why they are called nurse cells; they are controlled mainly by follicle stimulating hormone.
Read the full explanation →Testosterone in the human male is secreted by which cells?
The correct answer is B, the Leydig or interstitial cells, which lie in the spaces between the seminiferous tubules of the testis and secrete androgens, chiefly testosterone, under the influence of luteinising hormone from the anterior pituitary.
Read the full explanation →In human beings, fertilisation normally takes place in which part of the female reproductive system?
The ovum released at ovulation is picked up by the fimbriae of the infundibulum and meets the sperm in the ampulla, the wide middle part of the tube, where fusion takes place to form the zygote.
Read the full explanation →The Pamir Knot, from which several great ranges of Asia radiate, is popularly known as
The Pamir, mostly in Tajikistan, is the knot where the Himalaya, Karakoram, Hindu Kush, Kunlun and Tien Shan meet, and its height and position earned it this name, which is also used for the plateau of Tibet.
Read the full explanation →Which is the highest and the most extensive plateau in the world?
Enclosed by the Himalaya in the south, the Karakoram and Kunlun in the north-west and the Chinese mountains in the east, it averages well over four thousand metres and is called the roof of the world along with the Pamir; the Indus, the Sutlej, the Brahmaputra, the Yangtze and the…
Read the full explanation →The Strait of Hormuz, one of the busiest oil routes of the world, connects the Persian Gulf with
The Strait of Hormuz lies between Iran on the north and Oman and the United Arab Emirates on the south, and is the only sea passage from the Persian Gulf to the Gulf of Oman and so to the Arabian Sea; a very large share of the crude oil traded…
Read the full explanation →The Gobi desert, a cold desert of Asia, is spread over which two countries?
The Gobi lies in southern Mongolia and northern China, in the rain shadow of the Himalaya, which keeps the monsoon out; it is a cold desert with bitter winters, gravel plains rather than sand seas, and is known for dinosaur fossil beds.
Read the full explanation →The largest lake in the world, bordered by five countries of Asia and Europe, is
Although it is called a sea because of its size and its saline water, it has no outlet to the ocean and is therefore the largest lake in the world by area.
Read the full explanation →Which is the longest river of Asia?
It rises on the plateau of Tibet, flows across central China and enters the East China Sea near Shanghai, and is the longest river of Asia and the third longest in the world after the Nile and the Amazon.
Read the full explanation →Which lake of Asia is the deepest lake in the world?
Lying in southern Siberia in a rift valley, Baikal is the deepest lake on the earth and holds the largest volume of fresh water of any lake, roughly a fifth of the unfrozen fresh water on the surface of the planet.
Read the full explanation →