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

Black lung disease occurs in people working in – (1) Electroplating industry (2) Organic solvents industry (3) Paint manufacturing industry (4) Coal mines
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(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 over a long period of time. Inhaled coal dust progressively builds up in the lungs and is unable to be removed by the body; that leads to inflammation, fibrosis, and in worse cases, necrosis.
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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

Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. (A) Radioactive (B) Organic (C) Inorganic (D) None of these

Description : Waste/polluted water discharged from electroplating, blast furnace and coal mining industries contain mainly __________ substances. (A) Radioactive (B) Organic (C) Inorganic (D) None of these

Last Answer : (C) Inorganic

Workers working in __________ industry are most prone to white lung cancer. (A) Coal mining (B) Limestone mining(C) Textile(D) Asbestos

Description : Workers working in __________ industry are most prone to white lung cancer. (A) Coal mining (B) Limestone mining (C) Textile (D) Asbestos

Last Answer : (C) Textile

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)

Vulcanisation of rubber decreases its (A) Tensile strength (B) Resistance to organic solvents (C) Tackiness (D) Working temperature range

Description : Vulcanisation of rubber decreases its (A) Tensile strength (B) Resistance to organic solvents (C) Tackiness (D) Working temperature range

Last Answer : (C) Tackiness

Which of the following are capable of denaturing proteins? (a) organic solvents (b) extreme pH (c) heat (d) all of the these

Description : Which of the following are capable of denaturing proteins? (a) organic solvents (b) extreme pH (c) heat (d) all of the these

Last Answer : all of the these

Which of the following improperly describes the physical properties of an alkyne? (a) relatively nonpolar (b) nearly insoluble in water (c) less dense than water (d) insoluble in most organic solvents

Description : Which of the following improperly describes the physical properties of an alkyne? (a) relatively nonpolar (b) nearly insoluble in water (c) less dense than water (d) insoluble in most organic solvents

Last Answer : insoluble in most organic solvents

A nonpolar molecule is usually: w) hydrophilic x) soluble in water y) hydrophytic z) soluble in organic solvents

Description : A nonpolar molecule is usually: w) hydrophilic x) soluble in water y) hydrophytic z) soluble in organic solvents

Last Answer : ANSWER: Z -- SOLUBLE IN ORGANIC SOLVENTS

(3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be plated the negative electrode (cathode) or plate in a galvanic couple. Thus a spoon or other object may be connected by a wire to a plate of nickel. The process that occurs on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

Description : (3) made cathode and a pure nickel red, the anode Explanation: Electroplating is the deposition by electrolysis of a coating of metal upon a conducting surface. The simplest system makes the object to be ... on the spoon is called reduction and, therefore, the spoon is also referred to as a cathode.

Last Answer : Which of the following is not a method of preparing oxygen? (1) Electrolysis of water (2) Fractional distillation of liquid air (3) Decomposition of potassium permanganate (4) Decomposition of manganese dioxide

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

Can you help me engineer this leak detection system for organic solvents?

Description : Can you help me engineer this leak detection system for organic solvents?

Last Answer : answer:I'm sorry that I may not be qualified to answer this question, but these are my ideas. If argon is what will be leaking, you could have some sort of argon detector, and some sort of ... when there are no leaks. Any drop in pressure would signal a leak. Look up pressure decay leak detection.

Assertion(A): Ethyl alcohol is soluble in organic solvents Reason (R): Ethyl alcohol is having non polar ethyl group

Description : Assertion(A): Ethyl alcohol is soluble in organic solvents Reason (R): Ethyl alcohol is having non polar ethyl group

Last Answer : Assertion(A): Ethyl alcohol is soluble in organic solvents Reason (R): Ethyl alcohol is having non polar ... is false D. A is false but R is true

Assertion (A): Ethyl alcohol is soluble in organic solvents Reason(R): Calcium chloride can form an addition compound with ethyl alcohol

Description : Assertion (A): Ethyl alcohol is soluble in organic solvents Reason(R): Calcium chloride can form an addition compound with ethyl alcohol

Last Answer : Assertion (A): Ethyl alcohol is soluble in organic solvents Reason(R): Calcium chloride can form an addition ... is false D. A is false but R is true

Thermosetting resins/polymers as compared to thermoplastic ones are (A) Soluble in all organic solvents (B) More brittle (C) Formed by addition polymerisation only (D) Easily reshaped & reused

Description : Thermosetting resins/polymers as compared to thermoplastic ones are (A) Soluble in all organic solvents (B) More brittle (C) Formed by addition polymerisation only (D) Easily reshaped & reused

Last Answer : (B) More brittle

What are the three classes of organic solvents?

Description : What are the three classes of organic solvents?

Last Answer : Typically, organic solvents can be split up in the following classes: Oxygenated, Hydrocarbon, and Halogenated. Oxygenated solvents include alcohols, glycol ethers, ketones, esters, ... solvents include aliphatics and aromatics. Halogenated solvents include those that are chlorinated primarily.

White lung disease is prevalent among the worker of which industry?

Description : White lung disease is prevalent among the worker of which industry?

Last Answer : Cotton industry

1. Before 31st August, 1965 how many members were in the Economic and Social Council? 2. Which industry uses mica? 3. Who was the first Indian to become the member of British Parliament? 4. In which year was the Indian Space Research Organization (ISRO) founded? 5. White lung disease is prevalent among the worker of which industry?

Description : 1. Before 31st August, 1965 how many members were in the Economic and Social Council? 2. Which industry uses mica? 3. Who was the first Indian to become the member of British Parliament ... outstanding performance in which field? 20. What is the inflation experienced in the country at present?

Last Answer : Answer : 1. 18 2. Electrical industry 3. Dadabhai Naoroji 4. 969 5. Cotton Industry 6. Courts 7. For film studios 8. Swami Dayananda 9. CO2 10. Fiscal drag 11. October 9 12. North Sea and ... Principle 16. Same as on the surface 17. River Zambezi 18. 1917 19. Journalism 20. Cost-push inflation

Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by (A) Chemical coagulation (B) Floatation & skimming (C) Centrifugation (D) Ultra filtration

Description : Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by (A) Chemical coagulation (B) Floatation & skimming (C) Centrifugation (D) Ultra filtration

Last Answer : (A) Chemical coagulation

In a manufacturing industry, breakeven point occurs, when the (A) Total annual rate of production equals the assigned value (B) Total annual product cost equals the total annual sales (C) Annual profit equals the expected value (D) Annual sales equals the fixed cost

Description : In a manufacturing industry, breakeven point occurs, when the (A) Total annual rate of production equals the assigned value (B) Total annual product cost equals the total annual sales (C) Annual profit equals the expected value (D) Annual sales equals the fixed cost

Last Answer : (B) Total annual product cost equals the total annual sales

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

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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.

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

The gas that usually cause explosion in coal mines is

Description : The gas that usually cause explosion in coal mines is

Last Answer : Methane (CH4)

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

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.

Population In which sector the largest labour force is attached in Pakistan? A. Industry B. Trade C. Agriculture D. Mines

Description : Population In which sector the largest labour force is attached in Pakistan? A. Industry B. Trade C. Agriculture D. Mines

Last Answer : ANSWER: C

In which sector the largest labour force is attached in Pakistan? A. Industry B. Trade C. Agriculture D. Mines

Description : In which sector the largest labour force is attached in Pakistan? A. Industry B. Trade C. Agriculture D. Mines

Last Answer : ANSWER: C

Black lung disease is common in:

Description : Black lung disease is common in:

Last Answer : Black lung disease is common in: A. Farmers B. workers of petrochemical industry C. coal miners D. Refinery workers.

Mercury poisoning in man causes the disease – (1) Black lung (2) Arsenicosis (3) Minamata (4) Tai-Etai

Description : Mercury poisoning in man causes the disease – (1) Black lung (2) Arsenicosis (3) Minamata (4) Tai-Etai

Last Answer : (3) Minamata Explanation: Minamata disease is a neurological syndrome caused by severe mercury poisoning. It was first discovered in Minamata city in Kumamoto prefecture, Japan, in 1956

Mercury poisoning in man causes the disease (1) Black lung (2) Arsenicosis (3) Minamata (4) Tai-Etai

Description : Mercury poisoning in man causes the disease (1) Black lung (2) Arsenicosis (3) Minamata (4) Tai-Etai

Last Answer : Minamata

Carbon occurs in nature in the purest form as - (1) Diamond (2) Graphite (3) Carbon black (4) Coal

Description : Carbon occurs in nature in the purest form as - (1) Diamond (2) Graphite (3) Carbon black (4) Coal

Last Answer : (1) Diamond Explanation: There are three forms of pure carbon: Graphite, Coal and Diamond. All three are made up of elemental carbon, caol is the least pure when found in nature. Diamond is the purest form of Carbon.

1. Most of the explosions in mines occur due to the mixing of things? 2. Which is the ‘Slack Season’ in the Indian Economy? 3. Which metal causes Itai-itai disease? 4. Which state is the percentage of forest area to total geographical area the highest? 5. Who was the most radia of the Bhakti Saints?

Description : 1. Most of the explosions in mines occur due to the mixing of things? 2. Which is the Slack Season' in the Indian Economy? 3. Which metal causes Itai-itai disease? 4. Which state is ... area of the world? 20. From where The Great Granary of the Indus Valley Civilization has been discovered?

Last Answer : Answer : 1. Oxygen with acetylene 2. Jan.-June 3. Cadmium 4. Arunachal Pradesh 5. Kabir 6. 40,000 7. Directive Principles 8. A pin hole box 9. Cirques 10. 1764 11. 1946 12. Cost of ... process 15. Lord Amherst 16. Habeas Corpus 17. Sand and silicates 18. 1874 19. Pastoral herding 20. Mohenjodaro

Reason of lung cancer is (a) coal mining (b) calcium fluoride (c) cement factory (d) bauxite mining

Description : Reason of lung cancer is (a) coal mining (b) calcium fluoride (c) cement factory (d) bauxite mining

Last Answer : (a) coal mining

Which of the following are correct statements concerning unsaturated hydrocarbons? (a) All unsaturated hydrocarbons are insoluble in water. (b) All unsaturated hydrocarbons are soluble in nonpolar solvents. (c) All unsaturated hydrocarbons are more dense than water. (d) (a) & (c)

Description : Which of the following are correct statements concerning unsaturated hydrocarbons? (a) All unsaturated hydrocarbons are insoluble in water. (b) All unsaturated hydrocarbons are soluble in nonpolar solvents. (c) All unsaturated hydrocarbons are more dense than water. (d) (a) & (c)

Last Answer : (a) & (c)

Consider (R)- and (S)-2-butanol. Which physical property distinguishes the two compounds? (a) melting point(b) solubility in common solvents(c) Rotation of plane-polarized light(d) Infrared spectrum

Description : Consider (R)- and (S)-2-butanol. Which physical property distinguishes the two compounds? (a) melting point (b) solubility in common solvents (c) Rotation of plane-polarized light (d) Infrared spectrum

Last Answer : Rotation of plane-polarized light

Bagasse, a by-product of sugar manufacturing industry, is used for the production of - (1) Glass (2) Paper (3) Rubber (4) Cement

Description : Bagasse, a by-product of sugar manufacturing industry, is used for the production of - (1) Glass (2) Paper (3) Rubber (4) Cement

Last Answer : (2) Paper

The polymerisation of which of the Following is used in manufacturing of polythene in industry? (1) Methane (2) Styrene (3) Acetylene (4) Ethylene

Description : The polymerisation of which of the Following is used in manufacturing of polythene in industry? (1) Methane (2) Styrene (3) Acetylene (4) Ethylene

Last Answer : (4) Ethylene Explanation: Ethylene is a rather stable molecule that polymerizes only upon contact with catalysts. The conversion is highly exothermic, that is the process releases a lot of heat. ... is the most pervasive technology, which means that metal chlorides or metal oxides are used.

The polymerisation of which of the following is used in manufacturing of polythene in industry ? (1) Methane (2) Styrene (3) Acetylene (4) Ethylene

Description : The polymerisation of which of the following is used in manufacturing of polythene in industry ? (1) Methane (2) Styrene (3) Acetylene (4) Ethylene

Last Answer : Ethylene

What is Electroplating ?

Description : What is Electroplating ?

Last Answer : Electroplating is the process of applying a thin coating of one metal over another with the help of electrolysis. A corrosive metal coating is applied to a corrosive material made of a corrosive cheap ... the nickel rod is electrified using any other material made of anode and laher as a cathode.

What is meant by electroplating ?

Description : What is meant by electroplating ?

Last Answer : In the process of electrolysis or electrolysis, the coating of one metal on another metal is called electroplating. In this way the durability and beauty of the metal increases and the beauty increases. For example , nickel and chromium are coated on iron.

The metals commonly used for electroplating are – (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

Description : The metals commonly used for electroplating are – (1) Gold, Sodium and Chromium (2) Chromium, Copper and Nickel (3) Nickel, Lead and Chromium (4) Gold, Sodium and Potassium

Last Answer : (2) Chromium, Copper and Nickel Explanation: The process of electroplating takes place as metals in ionic form move from a positive to negative electrode. An electric current passing through the ... ability of metal objects. Plating protects by one of two ways, either sacrificially or mechanically.

The coating of a thin layer of zinc on steel or iron objects is known as – (1) Hot dipping (2) Tinning (3) Galvanising (4) Electroplating

Description : The coating of a thin layer of zinc on steel or iron objects is known as – (1) Hot dipping (2) Tinning (3) Galvanising (4) Electroplating

Last Answer : (3) Galvanising Explanation: Galvanization is the process of applying a protective zinc coating to steel or iron, in order to prevent rusting. Although galvanization can be done with electrochemical and ... is hot-dip galvanization, in which steel parts are submerged in a bath of molten zinc.