Q : Describe about geological origin of coalfields in Bangladesh? Ans : The coal was formed by the geologic processes of burial of forest debris in Permian geologic period(250 to 280 million years before present) and coalification of buried organic matter by underground heat and pressure. A very large forest and swampy environment existed during the time in north west… Read more →
Q : Why sulfur reduces the quality of coal? Ans : Sulfur in coal may occur as as organic sulfur, as sulfide minerals(pyrite) or sulphate mineral (mostly hydrous iron or calcium sulphate). The sulfur compound present in the coal gives off a major pollutant sulfur dioxide, when burned. Sulfur dioxide pollutes the atmosphere by creating bad smoke and causes acid… Read more →
Q : What are the composition of biogas? Ans : Biogas is a colorless combustible gas. The composition of biogas is about 60 to 75% methane and about 25 to 35% carbon dioxide with insignificant to trace nitrogen, hydrogen sulfide, hydrogen and oxygen. The biogas has combustion properties like natural gas and it burns at about 800 degree centigrade.
Q : Define onshore and offshore? What is onshore ? Ans : onshore : Onshore refers to the mainland. In exploration and production, “onshore” refers to the development of oil fields, gas deposits and geothermal energy on land. In the wind energy sector, “onshore wind farms” generate energy with windmills installed on land. Since the energy turnaround, the term “onshore”… Read more →
Q : What Is The Main SOURCE Of ELECTRICITY In Bangladesh? Ans : Oil, gas and coal are the nation’s primary source of fuel for electricity generation. For ensuring electricity generation, it is essential to secure primary energy sources. In the year 2021, total electricity demand in Bangladesh will be approximately 20,000 megawatts. In order to achieve such target, relevant… Read more →
Q : Differentiate between Reserve and Resource? Ans : Differences between Reserve and Resource is given below Reserve Resource 1.Reserves are those quantities of gas that are considered commercially recoverable from a known discovery of gas from underground. A resource is that amount of a geologic commodity that exists in both discovered and undiscovered deposits. 2.Reserve refers only to the… Read more →
Q : What is fossil? Ans : The evidence in rock of the presence of a plant or an animal from an earlier geological period. Fossils are formed when minerals in groundwater replace materials in bones and tissue, creating a replica in stone of the original organism or of their tracks. The study of fossils is the domain of paleontology…. Read more →
Q : What is LTCC? Ans : Longwall Top Coal Caving method is the full form of LTCC. Longwall top coal caving (LTCC) is a special type of longwall mining applicable to very thick seams (greater than 4.5m) where good quality coal is being left because “conventional” longwall equipment has not yet been designed to operate successfully beyond around 5m… Read more →
Q : What do you mean by condensate? Ans : Condensation is the change of the physical state of matter from the gas phase into the liquid phase, and is the reverse of vaporization. The word most often refers to the water cycle.It can also be defined as the change in the state of water vapor to liquid water when… Read more →
Q : What do you mean by CCGT?/What us CCGT? Ans : Natural gas greater efficiency and lower cost in generating electricity in combined cycle gas turbine (CCGT ). Many fold increase in the demand for electricity throughout the world has made this point the prime factor for the increase in demand for natural gas.
Q : What is the Composition of the Earth and Mineral Resources? Ans : The crust of the earth is about 30–70-km-thick form of the outer layer of the planet in which all rocks and minerals are found. Beneath the crystal layer is the zone known as the Mohorovicic discontinuity , which is followed by heavy rocks of a thickness… Read more →
Q : How does the earth make soil? Ans : Soil is the thin layer of material covering the earth’s surface and is formed from the weathering of rocks. It is made up mainly of mineral particles, organic materials, air, water and living organisms—all of which interact slowly yet constantly. Most plants get their nutrients from the soil and they… Read more →
Q : How Coal is formed ? / The formation of coal. Ans : The formation of coal begins in areas of swampy wetlands where groundwater is near or slightly above the topsoil. Because of this, the flora present produces organic matter quickly – faster in fact than it can be decomposed.In these areas, layers of organic matter are accumulated… Read more →
Q : What is difference between Solar energy and biomass? Ans : It’s an established fact that we are facing global environmental problems as of right now. Because of this, governments and regular citizens all over the world have tried to find solutions that can help save our planet from complete destruction. On the bright side, we have been able… Read more →
Q : Distinguish the types of renewable natural resources. Ans : Renewable energy is energy that has been derived from earth’s natural resources that are not finite or exhaustible, such as wind and sunlight. Renewable energy is an alternative to the traditional energy that relies on fossil fuels, and it tends to be much less harmful to the environment. 01)… Read more →