Description : Which variety of coal contains recognizable traces of the original plant material? (1) Anthracite (2) Lignite (3) Peat (4) Bitumen
Last Answer : (3) Peat Explanation: Peat contains recognizable traces of the original plant material. Initially the peat is converted into lignite or 'brown coal' - these are coal-types with low organic maturity. In ... , lignite is quite soft and its colour can range from dark black to various shades of brown.
Description : Which variety of coal contains recognisable traces of the original plant material ? (1) Anthracite (2) Lignite (3) Peat (4) Bitumen
Last Answer : Peat
Description : Which among the following coal contains 90 per cent of carbon? (1) Anthracite (2) Bitumen (3) Lignite (4) Peat
Last Answer : (1) Anthracite Explanation: Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, ... elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Anthracite contains 90 per cent of carbon.
Last Answer : Anthracite
Description : Which is the variety of coal in which the deposit contains recognisable traces of the original plant material? -Do You Know?
Last Answer : answer:
Description : Which is the variety of coal in which the deposit contains recognisable traces of the original plant material?
Description : 1. What is the total number of Fundamental Duties mentioned in the Constitution? 2. Which is the variety of coal in which the deposit contains recognisable traces of the original plant material? 3. What ... production of natural rubber, what is the rank of India? 20. To whom the 'Yavanas' refer?
Last Answer : Answer : 1. 11 2. Peat 3. Rs. 1000 4. Orographic 5. Yajur 6. Ann Banoraft 7. Spleen 8. All the members of Lok Sabha 9. Tropical moist deciduous 10. Mahapadrna 11. Adiabatic 12. Science 13. American Dollar 14. Downs 15. Dhana Nanda 16. Virus 17. Speaker 18. Zero permeability 19. Fourth 20. Greeks
Description : Which one of the following types of coal contains a higher percentage of carbon than the rest? (1) Bituminous coal (2) Lignite (3) Peat (4) Anthracite
Last Answer : (4) Anthracite Explanation: Anthracite is thecoal that gives the most energy and the least pollution (it produces lots of CO2). It is the ideal fuel for power station.
Description : Which one of the following lists four type of coal, arranged in the increasing order of their carbon content? (a) Peat, Lignite, Bituminous, Anthracite (b) Peat, Bituminous, Lignite, Anthracite (c) Lignite, Peat, Bituminous, Anthracite (d) Peat, Anthracite, Lignite, Bituminous
Last Answer : Ans: (a)
Description : The highest grade and best quality coal is – (1) Lignite (2) Peat (3) Bituminous (4) Anthracite
Last Answer : (4) Anthracite Explanation: Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy ... with few impurities. It is largely used for heating domestically as it burns with little smoke.
Description : Which is the highest quality of hard coal? (1) Anthracite (2) Bituminous (3) Lignite (4) Peat
Last Answer : (1) Anthracite Explanation: Anthracite is the highest rank of coal. It is the most metamorphosed type of coal, in which the carbon content is between 92.1% and 98%. Anthracite coal generally has ... heating value per ton on a mineralmatter-free basis. Anthracite is often referred to as hard coal.
Description : Highest percentage of carbon is found in which form of coal? (1) Anthracite (2) Bituminous (3) Peat (4) Lignite
Last Answer : (1) Anthracite Explanation: Anthracite is the highest rank of coal since it has a carbon content of over 87% on a dry ash-free basis. Anthracite coal generally has the highest heating value per ton on a mineral-matter-free basis. It has a bright luster and breaks with a semi-conchoidal. fracture.
Description : Which of the following type of coal has the lowest proportion of volatile matter? (1) Lignite (2) Peat (3) Bituminous (4) Anthracite
Last Answer : (4) Anthracite Explanation: Anthracite has the lowest proportion of volatile matter. Volatile matter in coal refers to the components of coal, except for moisture, which are liberated at ... hydrocarbons and some sulfur. The volatile matter of coal is determined under rigidly controlled standards.
Description : Which of the following has the highest calorific value? (A) Lignite (B) Sub-bituminous coal (C) Anthracite (D) Peat
Last Answer : (C) Anthracite
Description : In terms of quality, what is the highest ranked coal? w) peat x) bituminous y) anthracite z) lignite
Last Answer : ANSWER: Y -- ANTHRACITE
Description : Which of the following type of coal has the lowest proportion of volatile matter ? (1) Lignite (2) Peat (3) Bituminous (4) Anthracite
Description : The highest grade and best quality coal is (1) Lignite (2) Peat (3) Bituminous (4) Anthracite
Description : Which one of the following is not coal variety? (1) Lignite (2) Bituminous (3) Dolomite (4) Peat
Last Answer : (3) Dolomite Explanation: Dolomite is a common rockforming mineral. It is a calcium magnesium carbonate with a chemical composition of CaMg(CO3)2. It is the primary component of the sedimentary ... known as dolomitic marble. Dolomite is used in the Pidgeon process for the production of magnesium.
Last Answer : Dolomite
Description : Which of the following coals has the highest calorific value? (A) Lignite (B) Sub-bituminous (C) Anthracite (D) Peat
Description : Which of the following is considered as superior quality of coal ? (A) Bituminous coal (B) Peat (C) Lignite (D) Coke.
Last Answer : Ans: A
Description : Which of the following is considered as superior quality of coal? (A) Bituminous coal (B) Peat (C) Lignite (D) Coke.
Last Answer : Bituminous coal
Description : Which one of the following is known as the 'brown coal'? (1) Anthracite (2) Bituminous (3) Coke (4) Lignite
Last Answer : (4) Lignite Explanation: Lignite, often referred to as brown coal, is a soft brown fuel with characteristics that put it somewhere between coal and peat. It is considered the lowest rank of coal. It has ... 66%, and an ash content ranging from 6% to 19% compared with 6% to 12% for bituminous coal.
Description : Which one of the following is known as the ‘brown coal’? (1) Anthracite (2) Bituminous (3) Coke (4) Lignite
Last Answer : (4) Lignite Explanation: Lignite, often referred to as brown coal, is a soft brown fuel with characteristics that put it somewhere between coal and peat. It is considered the lowest rank of coal. It has a carbon content of around 2530%.
Description : Which among the following types of coal produces most heat per unit? (1) Coal (2) Lignite (3) Anthracite (4) Pit
Last Answer : (3) Anthracite Explanation: The heat content of anthracite ranges from 22 to 28 million Btu per short ton (26 to 33 MJ/kg) on a moist, mineral-matter-free basis. Anthracite ("coal-like" ... , and the highest calorific content of all types of coals, which also include bituminous coal and lignite.
Description : Which of the following can be made into briquettes without the use of a binder? (A) Lignite (B) Bituminous coal (C) Anthracite coal (D) None of these
Last Answer : (A) Lignite
Description : The difference between total carbon and fixed carbon of coal will be minimum in case of (A) Lignite (B) Bituminous coal (C) Anthracite (D) High temperature coke (V.M < 0.5%)
Last Answer : (D) High temperature coke (V.M < 0.5%)
Description : The most matured coal out of the following is (A) Lignite (B) Semi-anthracite (C) Sub-bituminous (D) Bituminous
Last Answer : (B) Semi-anthracite
Description : Hard coke is manufactured from (A) Lignite (B) Bituminous coal (C) Semi-anthracite (D) Anthracite
Last Answer : (B) Bituminous coal
Description : Which is the most matured coal? (A) Lignite (B) Bituminous (C) Semi-anthracite (D) Anthracite
Last Answer : (D) Anthracite
Description : Coalification means the (A) Process of conversion of lignite into anthracite (B) Underground gasification of coal (C) Complete combustion of coal (D) Direct hydrogenation of coa
Last Answer : (A) Process of conversion of lignite into anthracite
Description : Which coal is considered a metamorphic rock? w) anthracite coal x) bituminous coal y) lignite coal z) all of these
Last Answer : ANSWER: W -- ANTHRACITE
Description : Among the following, the substance that is considered to be the earliest stage in coal formation is: w) sub-bituminous x) bituminous y) anthracite z) lignite
Last Answer : ANSWER: Z -- LIGNITE
Description : Which one of the following is known as the ‘brown coal’ ? (1) Anthracite (2) Bituminous (3) Coke (4) Lignite
Last Answer : Lignite
Description : Which among the following types of coal produces most heat per unit ? (1) Coal (2) Lignite (3) Anthracite (4) Pit
Description : Ignition temperature decreases progressively from anthracite to lignite, because (A) Volatile matter content increases (B) Carbon content decreases (C) Moisture content increases (D) Ash content increases
Last Answer : (A) Volatile matter content increases
Description : Anthracite coal (A) Contains more volatile matter than bituminous coal (B) Ignites more easily than bituminous coal (C) Is essentially a coking coal (D) Burns with short, bluish, yellow-tipped flame producing very little smoke
Last Answer : (D) Burns with short, bluish, yellow-tipped flame producing very little smoke
Description : Bitumen is generally obtained from (A) Organic material (B) Synthetic material (C) Petroleum product (D) Coal
Last Answer : Answer: Option C
Description : 1. Who was the author of the famous work All Contributions to the Critic of Political Economy' ? 2. Nobel Prize winning scientist James D. Watson is known for his work in which area? 3. ... -around an axis pointing towards which side? 20. Which Sultan built the fifth storeys of Qutub Minar?
Last Answer : Answer : 1. Karl Marx 2. Genetics3. Proust 4. Tamil Nadu 5. Atharvaveda 6. Carbon monoxide 7. Lok Sabha 8. Creditors 9. Sindri 10. Nandas 11. Compiler 12. 819°C 13. DNA 14. July 4th 15. Amil 16. Judge of Supreme Court 17. Rome 18. Recession plus inflation 19. The pole star 20. Firoz Shah Tughlaq
Description : what is anthracite? A. Carbon B. Hard coal (Answer) C. Ammonia D. None of these
Last Answer : B. Hard coal (Answer)
Description : Which of the following is not a binder for coal briquetting? (A) Coal tar (B) Bitumen (C) Molasses (D) None of these
Last Answer : (D) None of these
Description : Bitumen completely dissolves in (A) Carbon bisulphide (B) Chloroform (C) Coal tar (D) All of these
Last Answer : Answer: Option D
Description : What are the characteristics of peat coal ?
Last Answer : The properties of peat coal are wet and soft.
Last Answer : Peat coal features 'wet and soft'
Description : The fuel mostly used in steam boilers is A. brown coal B. peat C. coking bituminous coal D. non-coking bituminous coal
Last Answer : Answer: D
Description : Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture? (A) Anthracite coal (B) Rag paper (C) Bamboo (D) Inorganic solids
Last Answer : (C) Bamboo
Description : Which of the following is the most reactive (as regards the formation of CO + H2 from C + H2O)? (A) Blast furnace coke (B) Low temperature coke (C) Anthracite coal (D) Sub-bituminous coa
Last Answer : (B) Low temperature coke
Description : Anthracite can be used for (A) Recarbonising steel (B) Making carbon electrodes (C) Blending with highly coking coal to check its swelling which helps in saving coke even walls from damage and to produce high strength coke (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)