The gas that usually cause explosion in coal mines is

The gas that usually cause explosion in coal mines is
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1 Answer

Answer :

Methane (CH4)
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The gas that usually causes explosions in coal mines is - (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Description : The gas that usually causes explosions in coal mines is - (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Last Answer : (4) Methane Explanation: Methane is extremely flammable and may form explosive mixtures with air. Methane is violently reactive with oxidizers, halogens, and some halogen-containing compounds. Methane gas explosions are responsible for many deadly mining disasters.

The gas usually causing explosions in coal mines is – (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Description : The gas usually causing explosions in coal mines is – (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Last Answer : (4) Methane Explanation: Firedamp is flammable gas found in coal mines. It is the name given to a number of flammable gases, especially methane.

The gas that usually causes explosions in coal mines is (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Description : The gas that usually causes explosions in coal mines is (1) Hydrogen (2) Carbon monoxide (3) Air (4) Methane

Last Answer : Methane

Marsh gas, formed from decaying organic matter and in coal mines is (a) carbon dioxide (b) methane (c) ethane (d) carbon monoxide

Description : Marsh gas, formed from decaying organic matter and in coal mines is (a) carbon dioxide (b) methane (c) ethane (d) carbon monoxide

Last Answer : Ans:(b)

What keeps coal mines from being automated?

Description : What keeps coal mines from being automated?

Last Answer : The actual mining is nearly completely automated, but the machines need constant human attention.

What are the dangers of Victorian coal mines?

Description : What are the dangers of Victorian coal mines?

Last Answer : Need answer

Major coal deposits of India occur in (a) Seams separated by igneous rocks (b) Seams separated by sedimentary rocks (c) Seams separated by metamorphic rocks (d) Open cast mines

Description : Major coal deposits of India occur in (a) Seams separated by igneous rocks (b) Seams separated by sedimentary rocks (c) Seams separated by metamorphic rocks (d) Open cast mines

Last Answer : Ans: (b)

What is Gomia in Jharkhand famous for? (a) Coal fields (b) Manganese mines (c) Fertilizer plant (d) Explosives factory

Description : What is Gomia in Jharkhand famous for? (a) Coal fields (b) Manganese mines (c) Fertilizer plant (d) Explosives factory

Last Answer : Ans: (d)

Coal mines in Jharkhand are located at [BPSC 2011] (a) Jharia (b) Jamshedpur (c) Ranchi (d) Lohardaga

Description : Coal mines in Jharkhand are located at [BPSC 2011] (a) Jharia (b) Jamshedpur (c) Ranchi (d) Lohardaga

Last Answer : Ans: (a)

Coal mines were Nationalized in the year : (1) 1970 (2) 1971 (3) 1972 (4) 1976

Description : Coal mines were Nationalized in the year : (1) 1970 (2) 1971 (3) 1972 (4) 1976

Last Answer : (3) 1972 Explanation: The Coal Conservation and Development Act, 1974 provides for imposition of excise duty on coal despatches for meeting activities like conservation of coal, development of coal ... and assistance in mining operation. The Coking Coal (Nationalisation) Act was enacted in 1972.

Black lung disease occurs in people working in – (1) Electroplating industry (2) Organic solvents industry (3) Paint manufacturing industry (4) Coal mines

Description : Black lung disease occurs in people working in – (1) Electroplating industry (2) Organic solvents industry (3) Paint manufacturing industry (4) Coal mines

Last Answer : (4) Coal mines Explanation: Coal worker's pneumoconiosis, colloquially referred to as black lung disease, is a lung disease that results from breathing in dust from coal, graphite, or man-made carbon ... to be removed by the body; that leads to inflammation, fibrosis, and in worse cases, necrosis.

Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is (A) Neutralised by alkali treatment (B) Left as such without any treatment (C) Diluted with fresh water to reduce its acidity (D) None of these

Description : Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to ... without any treatment (C) Diluted with fresh water to reduce its acidity (D) None of these

Last Answer : (A) Neutralised by alkali treatment

Fill in the blanks with the appropriate option. _________ coal mines are in the vicinity, and there are manufactures of iron and steel, mill machinery, door and sash factories, etc., as well as several shipbuilding yards. (a) Intensive (b) Extensive (c) Substantial (d) Wideranging

Description : Fill in the blanks with the appropriate option. _________ coal mines are in the vicinity, and there are manufactures of iron and steel, mill machinery, door and sash factories, etc., as well as several shipbuilding yards. (a) Intensive (b) Extensive (c) Substantial (d) Wideranging 

Last Answer : Ans: b) Extensive 

Which of these resources would be called as land in economics (a) Coal mines of Bihar ; (b) Water resources of Uttaranchal ; (c) Mineral deposits of Jharkhand; (d) All the three

Description : Which of these resources would be called as land in economics (a) Coal mines of Bihar ; (b) Water resources of Uttaranchal ; (c) Mineral deposits of Jharkhand; (d) All the three

Last Answer : (d) All the three

Black lung disease occurs in people working in (1) Electroplating industry (2) Organic solvents industry (3) Paint manufacturing industry (4) Coal mines

Description : Black lung disease occurs in people working in (1) Electroplating industry (2) Organic solvents industry (3) Paint manufacturing industry (4) Coal mines

Last Answer :  Coal mines

Coal mines were Nationalised in the year : (1) 1970 (2) 1971 (3) 1972 (4) 1976

Description : Coal mines were Nationalised in the year : (1) 1970 (2) 1971 (3) 1972 (4) 1976 

Last Answer : 1972

With proper reason suggest type of enclosure for electric drives used in coal mines.

Description : With proper reason suggest type of enclosure for electric drives used in coal mines.

Last Answer : Flame-proof type of enclosure for electric drives is used in coal mines.  Reason: - Coal mines are very hazardous, prone to flame and explosions. Under such conditions, flame proof type ... them (due to arcs, sparks, or flashes) without igniting the surrounding flammable gases or vapors.

Workers in deep mines usually suffer from dehydration because

Description : Workers in deep mines usually suffer from dehydration because

Last Answer : Workers in deep mines usually suffer from dehydration because A. Water is lost due to evaporation B. ... lost along with salts in the form of sweat

Workers in deep mines usually suffer from dehydration because

Description : Workers in deep mines usually suffer from dehydration because

Last Answer : Workers in deep mines usually suffer from dehydration because A. Water is lost due to defecation B. Water ... D. Water is lost in the form of urine

The gas which may cause explosion in sewers, is A. Carbondioxide B. Methane C. Ammonia D. Carbon monoxide

Description : The gas which may cause explosion in sewers, is A. Carbondioxide B. Methane C. Ammonia D. Carbon monoxide

Last Answer : ANS: B

Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the (A) Requirement of large volume combustion chamber (B) Risk of explosion (C) Chances of clinker formation (D) Incomplete combustion of coal

Description : Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the (A) ... chamber (B) Risk of explosion (C) Chances of clinker formation (D) Incomplete combustion of coal

Last Answer : (B) Risk of explosion

Mixture of which pair of gases is the cause of occurrence of most of the explosions in mines? -Do You Know?

Description : Mixture of which pair of gases is the cause of occurrence of most of the explosions in mines? -Do You Know?

Last Answer : answer:

Mixture of which pair of gases is the cause of occurrence of most of the explosions in mines?

Description : Mixture of which pair of gases is the cause of occurrence of most of the explosions in mines?

Last Answer : Methane and air

Give reason: Workers in mines, glass factory and asbestos factory must be provided with gas masks.

Description : Give reason: Workers in mines, glass factory and asbestos factory must be provided with gas masks.

Last Answer : Because long exposure to silica particles suspended in air enter lungs of workers and causes silicosis.

What is the cause of a car tire explosion while driving?

Description : Is it high speed? Or overload? Overinflation? An old tire?

Last Answer : If the rubber is OK, it can withstand a large overload / overload - I have a "tested" 7 atm (with six meters in the trunk) ...: o So the cause of the explosion may be that the ... (worn), significantly damaged (damaged cord), or overheating from the brakes or defective bearing (I witnessed this).

Will mixing Clorox and brake fluid really cause an explosion?

Description : Will mixing Clorox and brake fluid really cause an explosion?

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Description : Molten sodium (as a coolant in fast breeder reactor) (A) Can’t attain high temperature at normal pressure (B) Is not at all corrosive, even at a higher temperature (C) Is highly radioactive at elevated temperatures and can cause explosion, when it comes in contact with air or water (D) None of these

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Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause (A) Explosion(B) Non biodegradable foam(C) Undesirable plant growth(D) Corrosion

Description : Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause (A) Explosion (B) Non biodegradable foam (C) Undesirable plant growth (D) Corrosion

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Fish Gas field Explosion Happens When ?

Last Answer : Fish Gas field Explosion Occurred in 1994 .

Mercaptans are added to liquefied petroleum gas (LPG) to (A) Reduce its cost (B) Narrow down its explosion limit (C) Assist in checking its leakage from cylinder (D) Increase its calorific value

Description : Mercaptans are added to liquefied petroleum gas (LPG) to (A) Reduce its cost (B) Narrow down its explosion limit (C) Assist in checking its leakage from cylinder (D) Increase its calorific value

Last Answer : (C) Assist in checking its leakage from cylinder

Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. (A) < 37% (B) > 71% (C) In between 37 & 71% (D) None of these

Description : Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is __________ percent. (A) < 37% (B) > 71% (C) In between 37 & 71% (D) None of these

Last Answer : (C) In between 37 & 71%

In general, the limit of inflammability/explosion limit of fuel gases is widened by the (A) Increase in gas pressure (B) Increase in temperature (i.e. preheating) (C) Use of pure oxygen for combustion instead of air (D) All (A), (B) & (C)

Description : In general, the limit of inflammability/explosion limit of fuel gases is widened by the (A) Increase in gas pressure (B) Increase in temperature (i.e. preheating) (C) Use of pure oxygen for combustion instead of air (D) All (A), (B) & (C)

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

Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas? (A) Hydrogen (B) Acetylene (C) Carbon monoxide (D) Ammonia

Description : Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gas-air mixture), rendering it the property of the most explosive gas? (A) Hydrogen (B) Acetylene (C) Carbon monoxide (D) Ammonia

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Are "mines" a fitting metaphor for "free radicals"?

Description : Are "mines" a fitting metaphor for "free radicals"?

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How do I get my email to work (Windows Mail -- mine's Bellsouth.net)

Description : How do I get my email to work (Windows Mail -- mine's Bellsouth.net)

Last Answer : I had this happen a couple times where somehow by virus or other bug, changed my SMPT and IMPA server port values. Most recently I had attempted to add another email account and despite my and my ... wish I knew more to help you other than to contact your support team where your email is hosted.

Why do iron ore mines first stack the ore with stackers and then reclaim it via reclaimers to transfer it to export conveyors?

Description : Why do iron ore mines first stack the ore with stackers and then reclaim it via reclaimers to transfer it to export conveyors?

Last Answer : Stacking and reclaiming allow mines to create stockpiles of ore between stages of the operation. These stockpiles act as buffers that insulate the various stages from uneven flows upstream and downstream. ... the flow by creating reserves along the way that can be expanded or depleted as necessary.

In which State are the 'Balaghat' Copper mines located ? -SST 10th

Description : In which State are the 'Balaghat' Copper mines located ? -SST 10th

Last Answer : The 'Balaghat' copper mines are located in Madhya Pradesh.

Where are the Kudermukh mines located? -SST 10th

Description : Where are the Kudermukh mines located? -SST 10th

Last Answer : They are located in the western Ghats of Karnataka.

What are the Khetri mines in Rajasthan famous for? -SST 10th

Description : What are the Khetri mines in Rajasthan famous for? -SST 10th

Last Answer : The Khetri mines in Rajasthan are famous for copper production.

How is iron–ore transported from Kudremukh mines to a port near Mangaluru? -SST 10th

Description : How is iron–ore transported from Kudremukh mines to a port near Mangaluru? -SST 10th

Last Answer : Iron-ore is transported as slurry through pipelines.

Silver is obtained from the lead & Zinc ares of Zawar mines in which city? -General Knowledge

Description : Silver is obtained from the lead & Zinc ares of Zawar mines in which city? -General Knowledge

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Most of the explosions in mines occur due to the mixing of things? -Do You Know?

Description : Most of the explosions in mines occur due to the mixing of things? -Do You Know?

Last Answer : answer:

Silver is obtained from the lead & Zinc ares of Zawar mines in which city? -General Knowledge

Description : Silver is obtained from the lead & Zinc ares of Zawar mines in which city? -General Knowledge

Last Answer : answer:

Mines of Panna (Madhya Pradesh) are famous for? -General Knowledge

Description : Mines of Panna (Madhya Pradesh) are famous for? -General Knowledge

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Where are the petroleum mines ?

Description : Where are the petroleum mines ?

Last Answer : There are petroleum mines in different countries of the Middle East.

Are you safe from anti-tank mines if your vehicle has an anti ballistic blanket?

Description : Are you safe from anti-tank mines if your vehicle has an anti ballistic blanket?

Last Answer : What is the answer ?

Cleaning Jobs in Mines?

Description : Cleaning Jobs in Mines?

Last Answer : Modern mining projects in Alaska and Canada are often located in remote areas with no nearby available housing for employees. Consequently, mine employees work what are known as a rotation ... to remote job sites at mines and oilfields, and interested parties should contact these companies.

What are Colorado School of Mines colors?

Description : What are Colorado School of Mines colors?

Last Answer : Blue and Silver.

The Jawar mines of Udaipur are famous for (a) Marble (b) Zinc (c) Granite (d) Bauxite

Description : The Jawar mines of Udaipur are famous for (a) Marble (b) Zinc (c) Granite (d) Bauxite

Last Answer : Ans: (b)

Gold Mines in India are located mainly in (a) Kolar (b) Raniganj (c) Jadugoda (d) Veeranam (e) None of these shop.ssbcrack.com

Description : Gold Mines in India are located mainly in (a) Kolar (b) Raniganj (c) Jadugoda (d) Veeranam (e) None of these shop.ssbcrack.com

Last Answer : Ans: (a)