RRB Group D GK Questions 2026

It is secreted by the three pairs of salivary glands and breaks starch into the smaller sugar maltose, which is why starch is the only class of food whose digestion actually begins in the buccal cavity.

It is the largest gland as well as the heaviest internal organ of the human body, it lies in the upper right part of the abdomen, and its chief contribution to digestion is bile, which is stored in the gall bladder and emulsifies fat.

Inhalation, also called inspiration, is the phase of breathing in which the diaphragm flattens and the intercostal muscles pull the ribs up and out, so the chest cavity enlarges, the pressure inside the lungs falls below the pressure of the atmosphere and oxygen rich air rushes in through the nostrils…

The United Nations Environment Programme and the World Meteorological Organization jointly created the panel in 1988 to give governments a common scientific basis for climate policy.

The tiger range countries met at a summit in St Petersburg in Russia in 2010 and agreed to work towards doubling the number of wild tigers, and 29 July was adopted as International Tiger Day, also called Global Tiger Day, at that meeting.

On the night of 2 and 3 December 1984 methyl isocyanate leaked from a pesticide plant at Bhopal and killed thousands of people in the surrounding settlements, and India keeps 2 December as National Pollution Control Day in memory of the victims and as a reminder of the need for…

The index is academic work, produced by the Yale Center for Environmental Law and Policy together with a centre at Columbia University, and it ranks countries on indicators of environmental health and ecosystem vitality.

Its central measure, the Living Planet Index, is prepared with the Zoological Society of London and shows how populations of mammals, birds, fish, reptiles and amphibians have changed over time.

The report compares the emission cuts that countries have actually promised with the cuts the world would need to hold warming to agreed limits, and the difference between the two is the gap of the title; UNEP releases it shortly before the annual climate conference.

It has brought out the report once in two years since 1987, assessing forest cover and tree cover state by state from satellite imagery.

The Convention on Wetlands was signed on 2 February 1971 in the Iranian city of Ramsar on the shore of the Caspian Sea, and it is the oldest of the modern global conservation treaties; the day has been observed on that anniversary since 1997.

The correct answer is B, the Montreal Protocol, which was signed on 16 September 1987 and commits countries to phasing out chlorofluorocarbons and other substances that destroy stratospheric ozone; the day is formally called the International Day for the Preservation of the Ozone Layer.

The United Nations General Assembly designated this date after the United Nations Conference on the Human Environment held at Stockholm in 1972, and the day has been observed since 1974, each year with a fresh theme and a host country, with the United Nations Environment Programme leading it.

The works, begun in the time of the Mysore state and later named after Sir M. Visvesvaraya, lies on the Bhadra river and is remembered in geography as the plant that uses electricity generated from water power, along with charcoal from the nearby forests, because the region has no coking…

An agro-based industry uses a farm product as its raw material, and sugar is made from sugarcane, which is why the mills stand in the cane belts of Uttar Pradesh, Maharashtra, Karnataka and Tamil Nadu; cotton textiles, jute, vegetable oil, tea and paper from bagasse belong to the same class.

Because their raw material is light, valuable and easy to move, and because they need little power or water, such units are free of the usual pulls of ore, coal and bulky material; electronics, computer assembly, diamond cutting and software are the standard examples, and they depend mainly on skilled…

The city has a very large number of cotton textile mills and hosiery units, helped by cotton grown nearby, the hydel power of the Western Ghats and a long tradition of engineering workshops that make textile machinery, and so it is called the Manchester of South India, as Ahmedabad is…

Rishra stands on the Hugli near Kolkata, and the mill set up there in 1855 began an industry that is still packed into a narrow belt along that river.

The first successful cotton textile mill began work there in 1854, and the city had every advantage the industry needed: cotton from the black soil of the Deccan, a port through which machinery arrived, capital from its merchants, a humid climate that suited spinning, and workers from the surrounding districts.

The Tata Iron and Steel Company set up its works there in 1907, choosing the site because iron ore, coal, manganese and limestone all lay within a short distance in the Chota Nagpur region, water was available from the Subarnarekha and Kharkai rivers, and the railway ran to the port…