Which one of the following is not coal variety? (1) Lignite (2) Bituminous (3) Dolomite (4) Peat

Which one of the following is not coal variety? (1) Lignite (2) Bituminous (3) Dolomite (4) Peat
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(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 rock known as dolostone and the metamorphic rock known as dolomitic marble. Dolomite is used in the Pidgeon process for the production of magnesium.
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Which one of the following is not coal variety? (1) Lignite (2) Bituminous (3) Dolomite (4) Peat

Description : Which one of the following is not coal variety? (1) Lignite (2) Bituminous (3) Dolomite (4) Peat

Last Answer : Dolomite

Which is the highest quality of hard coal? (1) Anthracite (2) Bituminous (3) Lignite (4) Peat

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.

Highest percentage of carbon is found in which form of coal? (1) Anthracite (2) Bituminous (3) Peat (4) Lignite

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.

Which of the following type of coal has the lowest proportion of volatile matter? (1) Lignite (2) Peat (3) Bituminous (4) Anthracite

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.

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

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.

In terms of quality, what is the highest ranked coal? w) peat x) bituminous y) anthracite z) lignite

Description : In terms of quality, what is the highest ranked coal? w) peat x) bituminous y) anthracite z) lignite

Last Answer : ANSWER: Y -- ANTHRACITE

Highest percentage of carbon is found in which form of coal? (1) Anthracite (2) Bituminous (3) Peat (4) Lignite

Description : Highest percentage of carbon is found in which form of coal? (1) Anthracite (2) Bituminous (3) Peat (4) Lignite

Last Answer : Anthracite

Which is the highest quality of hard coal? (1) Anthracite (2) Bituminous (3) Lignite (4) Peat

Description : Which is the highest quality of hard coal? (1) Anthracite (2) Bituminous (3) Lignite (4) Peat

Last Answer : Anthracite

Which of the following type of coal has the lowest proportion of volatile matter ? (1) Lignite (2) Peat (3) Bituminous (4) Anthracite

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 : Anthracite

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

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)

Which of the following is considered as superior quality of coal ? (A) Bituminous coal (B) Peat (C) Lignite (D) Coke.

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

The highest grade and best quality coal is – (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

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.

Which of the following has the highest calorific value? (A) Lignite (B) Sub-bituminous coal (C) Anthracite (D) Peat

Description : Which of the following has the highest calorific value? (A) Lignite (B) Sub-bituminous coal (C) Anthracite (D) Peat

Last Answer : (C) Anthracite

Which of the following is considered as superior quality of coal? (A) Bituminous coal (B) Peat (C) Lignite (D) Coke.

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

The highest grade and best quality coal is (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

Last Answer : Anthracite

Which variety of coal contains recognizable traces of the original plant material? (1) Anthracite (2) Lignite (3) Peat (4) Bitumen

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.

Which variety of coal contains recognisable traces of the original plant material ? (1) Anthracite (2) Lignite (3) Peat (4) Bitumen

Description : Which variety of coal contains recognisable traces of the original plant material ? (1) Anthracite (2) Lignite (3) Peat (4) Bitumen

Last Answer : Peat

The variety of coal in which the deposit contains recognizable traces of the original plant material is------? A. bitumen B. anthracite C. lignite D. peat (Answer)

Description : The variety of coal in which the deposit contains recognizable traces of the original plant material is------? A. bitumen B. anthracite C. lignite D. peat (Answer)

Last Answer : D. peat (Answer)

Which of the following coals has the highest calorific value? (A) Lignite (B) Sub-bituminous (C) Anthracite (D) Peat

Description : Which of the following coals has the highest calorific value? (A) Lignite (B) Sub-bituminous (C) Anthracite (D) Peat

Last Answer : (C) Anthracite

Which among the following coal contains 90 per cent of carbon? (1) Anthracite (2) Bitumen (3) Lignite (4) 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.

Which among the following coal contains 90 per cent of carbon? (1) Anthracite (2) Bitumen (3) Lignite (4) Peat

Description : Which among the following coal contains 90 per cent of carbon? (1) Anthracite (2) Bitumen (3) Lignite (4) Peat

Last Answer : Anthracite

Which one of the following is known as the 'brown coal'? (1) Anthracite (2) Bituminous (3) Coke (4) Lignite

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.

Which one of the following is known as the ‘brown coal’? (1) Anthracite (2) Bituminous (3) Coke (4) Lignite

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%.

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

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

Which one of the following is known as the ‘brown coal’ ? (1) Anthracite (2) Bituminous (3) Coke (4) Lignite

Description : Which one of the following is known as the ‘brown coal’ ? (1) Anthracite (2) Bituminous (3) Coke (4) Lignite

Last Answer : Lignite

The fuel mostly used in steam boilers is  A. brown coal  B. peat  C. coking bituminous coal  D. non-coking bituminous coal

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

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

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

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%)

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%)

The most matured coal out of the following is(A) Lignite (B) Semi-anthracite (C) Sub-bituminous (D) Bituminous

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

Hard coke is manufactured from (A) Lignite (B) Bituminous coal (C) Semi-anthracite (D) Anthracite

Description : Hard coke is manufactured from (A) Lignite (B) Bituminous coal (C) Semi-anthracite (D) Anthracite

Last Answer : (B) Bituminous coal

Pick out the correct statement. (A) Oxygen content decreases from lignite to bituminous coal as the coalification increases (B) The less the oxygen content, better is the coal, as it reduces the calorific value (C) With increase in oxygen content, moisture holding capacity of coal increases and the caking power decreases (D) All (A), (B) and (C)

Description : Pick out the correct statement. (A) Oxygen content decreases from lignite to bituminous coal as the coalification increases (B) The less the oxygen content, better is the coal, as it reduces the calorific value (C ... capacity of coal increases and the caking power decreases (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Which is the most matured coal? (A) Lignite (B) Bituminous (C) Semi-anthracite (D) Anthracite

Description : Which is the most matured coal? (A) Lignite (B) Bituminous (C) Semi-anthracite (D) Anthracite

Last Answer : (D) Anthracite

Which coal is considered a metamorphic rock? w) anthracite coal x) bituminous coal y) lignite coal z) all of these

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

What is the principal ore of aluminium? (1) Dolomite (2) Copper (3) Lignite (4) Bauxite

Description : What is the principal ore of aluminium? (1) Dolomite (2) Copper (3) Lignite (4) Bauxite

Last Answer : (4) Bauxite Explanation: Bacodte is an aluminium ore and is the main source of aluminium. This form of rock consists mostly of the minerals gibbsite, boehmite , and diaspore , in a mixture ... it was first recognised as containing aluminium and named by the French geologist Pierre Berthier in 1821.

What is the principal ore of aluminium ? (1) Dolomite (2) Copper (3) Lignite (4) Bauxite

Description : What is the principal ore of aluminium ? (1) Dolomite (2) Copper (3) Lignite (4) Bauxite

Last Answer : Bauxite

What are the characteristics of peat coal ?

Description : What are the characteristics of peat coal ?

Last Answer : The properties of peat coal are wet and soft.

An example of replenshible energy source is — (1) Coal (2) Petroleum (3) Lignite (4) Biomass

Description : An example of replenshible energy source is — (1) Coal (2) Petroleum (3) Lignite (4) Biomass

Last Answer : (4) Biomass Explanation: Biomass is biological material from living, or recently living organisms, most often referring to plants or plant-derived materials. As a renewable energy source, ... be converted to energy in three ways: thermal conversion, chemical conversion, and biochemical conversion.

An example of replenshible energy source is— (1) Coal (2) Petroleum (3) Lignite (4) Biomass

Description : An example of replenshible energy source is— (1) Coal (2) Petroleum (3) Lignite (4) Biomass

Last Answer : Biomass

What are the characteristics of peat coal ?

Last Answer : Peat coal features 'wet and soft'

Which one among the following statements regarding India's coal is not correct? [CDS 2012] (a) 98 percent of reserves of coal in India belongs to Gondwana period (b) Unknown amount of coal lies buried under the Ganga alluvium and the Deccan Trap (c) Bituminous coal is found in both lower Gondwana rocks and in Tertiary rocks (d) Gondwana coal is mainly found in the river valleys of Damodar, Mahanadi and Godavari

Description : Which one among the following statements regarding India's coal is not correct? [CDS 2012] (a) 98 percent of reserves of coal in India belongs to Gondwana period (b) Unknown amount of coal ... Tertiary rocks (d) Gondwana coal is mainly found in the river valleys of Damodar, Mahanadi and Godavari

Last Answer : Ans: (c)

Consider the following statements: 1. Gondwana coal is a laminated, bituminous coal. . 2. Gondwana coal is completely free from moisture, sulphur and phosphorus. Which of the statements given above is/are correct? [IAS 2008] (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Description : Consider the following statements: 1. Gondwana coal is a laminated, bituminous coal. . 2. Gondwana coal is completely free from moisture, sulphur and phosphorus. Which of the statements given above is/are correct? [IAS 2008] (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Last Answer : Ans: (a)

Which of the following must be stored in silos and not in open yard? (A) Coke breeze (B) High V.M. bituminous coal (C) Sand (D) None of these

Description : Which of the following must be stored in silos and not in open yard? (A) Coke breeze (B) High V.M. bituminous coal (C) Sand (D) None of these

Last Answer : (B) High V.M. bituminous coal

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

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

Calorific value of bituminous coal may be around __________ Kcal/kg. (A) 500 (B) 1500 (C) 6500 (D) 20000

Description : Calorific value of bituminous coal may be around __________ Kcal/kg. (A) 500 (B) 1500 (C) 6500 (D) 20000

Last Answer : (C) 6500

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

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

Safe condition for storage of high V.M. bituminous coal is that (A) Height of the coal heap should be < 3 metres (B) Maximum 200 tons should be stored in a heap (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Safe condition for storage of high V.M. bituminous coal is that (A) Height of the coal heap should be < 3 metres (B) Maximum 200 tons should be stored in a heap (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

Which will have the least volatile matter and hence will be the most difficult to ignite? (A) Bituminous coal (B) Coke (C) Semi-bituminous coal (D) Anthracite

Description : Which will have the least volatile matter and hence will be the most difficult to ignite? (A) Bituminous coal (B) Coke (C) Semi-bituminous coal (D) Anthracite

Last Answer : (B) Coke

Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal? (A) Vitrain (B) Clarain (C) Durain

Description : Which of the following petrological constitutes is responsible for bright and lustrous black band of bituminous coal? (A) Vitrain (B) Clarain (C) Durain

Last Answer : (A) Vitrain

Out of the following fuels, the difference between the net and gross calorific value is maximum in case of (A) Pitch (B) Fuel oil (C) Blast furnace gas (D) Bituminous coal

Description : Out of the following fuels, the difference between the net and gross calorific value is maximum in case of (A) Pitch (B) Fuel oil (C) Blast furnace gas (D) Bituminous coal

Last Answer : (B) Fuel oil

Bituminous coal (A) Ignites less easily than anthracite (B) Is generally coking (C) Burns with smoky yellow flame (D) Both (B) and (C)

Description : Bituminous coal (A) Ignites less easily than anthracite (B) Is generally coking (C) Burns with smoky yellow flame (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)