Describe the industrial production of dihydrogen from steam. Also write the chemical reaction involved.

Describe the industrial production of dihydrogen from steam. Also write the chemical reaction involved.
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Describe the industrial production of dihydrogen from steam. Also write the chemical reaction involved.
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pKa of dihydrogen phosphate is (A) 5.8 (B) 6.1 (C) 6.8 (D) 7.1

Description : pKa of dihydrogen phosphate is (A) 5.8 (B) 6.1 (C) 6.8 (D) 7.1

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In a solution containing phosphate buffer, the pH will be 7.4, if the ratio of monohydrogen phosphate : dihydrogen phosphate is (A) 4 : 1 (B) 5 : 1 (C) 10 : 1 (D) 20 : 1

Description : In a solution containing phosphate buffer, the pH will be 7.4, if the ratio of monohydrogen phosphate : dihydrogen phosphate is (A) 4 : 1 (B) 5 : 1 (C) 10 : 1 (D) 20 : 1

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Important buffer system of extracellular fluid is (A) Bicarbonate/carbonic acid (B) Disodium hydrogen phosphate/sodium dihydrogen phosphate (C) Plasma proteins (D) Organic Phosphate

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An acid having basicity one is - (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid

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What happens when alkali metals react with dihydrogen?

Description : What happens when alkali metals react with dihydrogen? 

Last Answer : The alkali metals react with dihydrogen at about 673K (lithium at 1073K) to form hydrides. All the alkali metal hydrides are ionic solids with high melting points. 

An acid having basicity one is (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid

Description : An acid having basicity one is (1) Sodium dihydrogen phosphate (2) Disodium hydrogen phosphate (3) Sodium phosphate (4) Phosphoric acid

Last Answer : Disodium hydrogen phosphate

In the Industrial production of vegetable ghee, the process involved is

Description : In the Industrial production of vegetable ghee, the process involved is

Last Answer : Reduction

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Description : Describe the construction and working of two pass flow surface condenser also write it’s function and location in steam power plant.

Last Answer : Construction: It consists of horizontal cast iron cylindrical vessel pack with tubes, through which the cooling water flows. The ends of the condenser are cut off by vertical perforated type plates ... hot feed water to boiler. Location in steam power plant- between turbine and feed pump 

10.(a) An ore on treatment with dilute hydrochloric acid produces brisk effervesces. What type of ore is this? What steps will be required to obtain metal from the enriched ore. , (b) Copper coin is kept immersed in silver nitrate solution for some time. What change will take place in coin and colour of the solution ? Write balanced chemical equation of the reaction involved. -Chemistry

Description : 10.(a) An ore on treatment with dilute hydrochloric acid produces brisk effervesces. What type of ore is this? What steps will be required to obtain metal from the enriched ore. , (b) ... in coin and colour of the solution ? Write balanced chemical equation of the reaction involved. -Chemistry

Last Answer : (a) Carbonate ore: (i) Calcination: Carbonate ore is heated in limited supply of air and oxide is obtained, e.g. (b) Copper, being more reactive than silver will displace silver from silver nitrate ... and there will be deposition of silver on copper coin. The colour of solution will turn to blue.

How is ammonia prepared? Write chemical reaction involved in the Haber’s process.

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Last Answer : i) Ammonia is prepared by the combination of hydrogen and nitrogen in the ratio of 3:1.  ii) The used catalyst is iron oxide. The promotors are potassium and aluminium oxides.  iii) The required conditions are high pressure and moderate temperature.  N2 + 3H2 → 2NH3

Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2 , is not practised, as it is (A) A slow reaction (B) A discontinuous reaction (requiring regeneration of iron by water gas intermittently) (C) Still in development stage (by employing fluidised bed technique) (D) All (A), (B) and (C)

Description : Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2 , is not practised, as it is (A) A slow reaction (B) A discontinuous reaction (requiring regeneration of ... in development stage (by employing fluidised bed technique) (D) All (A), (B) and (C)

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

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Description : Which of the following is not a chemical reaction? (1) Burning of paper (2) Digestion of food (3) Conversion of water into steam (4) Burning of coal

Last Answer : (3) Conversion of water into steam Explanation: Water boiling is a physical reaction only because during physical reaction there is a change of state but during chemical reaction there is breaking or making of bonds.

Which of the following is not a chemical reaction'? (1) Burning of paper (2) Digestion of food (3) Conversion of water into steam (4) Burning of coal

Description : Which of the following is not a chemical reaction'? (1) Burning of paper (2) Digestion of food (3) Conversion of water into steam (4) Burning of coal

Last Answer : (3) Conversion of water into steam Explanation: The conversion of water into steam is an example of a physical change. where the state of the matter changes without changing its composition. A ... of durability, changes to crystal form, textural change, shape, size, color, volume and density.

For the gaseous phase chemical reaction, C2H4(g) + H2O(g) ↔ C2H5OH(g), the equilibrium conversion does not depend on the (A) Steam to ethylene ratio (B) Temperature (C) Pressure (D) None of these

Description : For the gaseous phase chemical reaction, C2H4(g) + H2O(g) ↔ C2H5OH(g), the equilibrium conversion does not depend on the (A) Steam to ethylene ratio (B) Temperature (C) Pressure (D) None of these

Last Answer : (D) None of these

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Description : Which of the following is not a chemical reaction'? (1) Burning of paper (2) Digestion ot" food (3) Conversion of water into steam (4) Burning of coal

Last Answer : Conversion of water into steam

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Description : Which of the following statements are true of oxidants? A. In addition to their pathophysiologic roles in inflammation, injury, and infection, oxidants also have physiologic roles. B. Oxidants may ... involved the catalytic production of superoxide anion (O 2 ) by the enzyme xanthine oxidase.

Last Answer : Answer: ABCD DISCUSSION: Oxidants are reactive oxygen metabolites that have both physiologic and pathophysiologic roles. As potent oxidizing agents, oxidants are involved in cytochrome P ... leukocyte infiltration and activation, causing further tissue damage by the release of cytotoxic proteases

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Description : Which of the following hormones is primarily responsible for stimulating the production of progesterone? a) Luteinizing hormone Luteinizing hormone is released by the pituitary gland. b) Follicle-stimulating ... , are involved in early development of the follicle and also affect the female libido.

Last Answer : a) Luteinizing hormone Luteinizing hormone is released by the pituitary gland.

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Description : Describe any two sources of air leak in surface condenser. Also describe effect of air leak on latent heat of steam and cooling water requirements.

Last Answer : ✓ The main sources of air leakage found in condenser are given below: 1) There is leakage of air from atmosphere at the joint of the parts which are internally under a pressure less ... hence evaporation enthalpy of steam increases therefore more amount of cooling water required in the condenser. 

Give the raw materials, chemical reaction and industrial application for manufacturing of ammonium sulphate.

Description : Give the raw materials, chemical reaction and industrial application for manufacturing of ammonium sulphate. 

Last Answer : Raw Material for Ammonium Sulphate Ammonia + Sulfuric acid Or Coal + carbon monoxide +carbon dioxide + ammonia Or Ammonia + carbon dioxide + gypsum Chemical reaction for Ammonium sulphate ... application Used as or in Fertilizer an additive water treatment and /or cleaning additive

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Description : Write down the types of chemical fertilizers. What are their harmful affects/hazards also describe their solutions? 

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A compound ‘X’ on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound ‘Y’. ‘X’ also reacts with sodium metal to evolve a colourless gas ‘Z’. Identify ‘X’, ‘Y’ and ‘Z’. Write the equation of the chemical reaction of formation of ‘Y’ and also write the role of sulphuric acid in the reaction. -Science

Description : A compound X' on heating with excess conc. sulphuric acid at 443 K gives an unsaturated compound Y'. X' also reacts with sodium metal to evolve a colourless gas Z'. Identify X', Y' ... the chemical reaction of formation of Y' and also write the role of sulphuric acid in the reaction. -Science

Last Answer : X-Ethanol/ (C2H5OH)/Ethyl AlcoholY- Ethene / (C2H4)Z- Hydrogen/ (H2)Role of sulphuric acid - dehydrating agent

State the raw materials for manufacturing of ammonia. Write the balanced chemical reaction also.

Description : State the raw materials for manufacturing of ammonia. Write the balanced chemical reaction also. 

Last Answer : Ammonia Raw Material Synthesis gas as a source of hydrogen Air as source of nitrogen Reaction : N2+3H2 =2NH3

Industrial steam generators operate at a steam capacity of? (rra) 1300 kg/s (rrb) 1000 kg/s (rrc) 500 kg/s ( d) 125 kg/s

Description : Industrial steam generators operate at a steam capacity of? (rra) 1300 kg/s (rrb) 1000 kg/s (rrc) 500 kg/s ( d) 125 kg/s

Last Answer : ( d) 125 kg/s

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Description : Industrial boilers are closed vessels that use a fuel source or electricity to generate ________for industrial purposes. • Fuel Food • Steam

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Description : What type of ions are present in solution but are not actually involved in a chemical reaction?

Last Answer : These ions are called "spectators".

What type of ions are present in solution but are not actually involved in a chemical reaction?

Description : What type of ions are present in solution but are not actually involved in a chemical reaction?

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Description : Absorption with chemical reaction' is involved in the removal of (A) Carbon dioxide from gaseous stream using alkaline solution (B) Benzol from coke oven gas using solar oil/wash oil (C) Ammonia ... gas using refrigerated water (D) Tar from coke oven gas in primary gas coolers using chilled water

Last Answer : (A) Carbon dioxide from gaseous stream using alkaline solution

The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given below: The oxidizing and reducing agents involved in this redox reaction are: (a) Iodine and sulphur respectively (b) Iodine and hydrogen sulphide respectively (c) Sulphur and iodine respectively (d) Hydrogen sulphide and sulphur

Description : The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given below: The oxidizing and reducing agents involved in this redox reaction are: (a) ... and hydrogen sulphide respectively (c) Sulphur and iodine respectively (d) Hydrogen sulphide and sulphur

Last Answer : (b) Iodine and hydrogen sulphide respectively

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Last Answer : (C) Electrons

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Description : The total change in the enthalpy of a system is independent of the (A) Number of intermediate chemical reactions involved (B) Pressure and temperature (C) State of combination and aggregation in the beginning and at the end of the reaction (D) None of these

Last Answer : (A) Number of intermediate chemical reactions involved

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Description : Which of the following events is heat exchange involved?  a. when there is a phase change  b. when there is a chemical reaction  c. when the gas expands adiabatically  d. when there is difference in temperature

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Write chemical equation reactions taking place when carried out with the help of (a) Iron reacts with steam (b) Magnesium reacts with dil HCl (c) Copper is heated in air. -Chemistry

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Last Answer : This is the Answer.

Write balanced equations for the reaction of: (i) aluminium when heated in air. Write the name of the product. (ii) iron with steam. Name the product obtained. (iii) calcium with water. Why does calcium start floating in water? -Chemistry

Description : Write balanced equations for the reaction of: (i) aluminium when heated in air. Write the name of the product. (ii) iron with steam. Name the product obtained. (iii) calcium with water. Why does calcium start floating in water? -Chemistry

Last Answer : The bubbles of hydrogen stick to the surface of metal that is why it floats.

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Description : A merchant wholesaler 1. takes title and assumes risk and is generally involved in buying and reselling products 2. takes title and possession of goods and sells only to retailers 3. does ... of goods but may facilitate 4. deals exclusively with industrial products 5. none of these

Last Answer : takes title and assumes risk and is generally involved in buying and reselling products

A merchant wholesaler A)takes title and assumes risk and is generally involved in buying and reselling products. B)takes title and possession of goods and sells only to retailers. C)does not take title and possession of goods but may facilitate exchange between any two parties. D)deals exclusively with industrial products.

Description : A merchant wholesaler A)takes title and assumes risk and is generally involved in buying and reselling products. B)takes title and possession of goods and sells only to retailers. C)does ... of goods but may facilitate exchange between any two parties. D)deals exclusively with industrial products.

Last Answer : A)takes title and assumes risk and is generally involved in buying and reselling products.

Derive an Ideal gas equation. Mention the terms involved in it. Also write how it is utilised to obtain combined gas law.

Description : Derive an Ideal gas equation. Mention the terms involved in it. Also write how it is utilised to obtain combined gas law.

Last Answer : Derive an Ideal gas equation. Mention the terms involved in it. Also write how it is utilised to obtain combined gas law.

Write the reaction involved in manufacturing of sulphuric acid.

Description : Write the reaction involved in manufacturing of sulphuric acid. 

Last Answer : Reactions in sulfuric acid manufacturing S + O2 = SO2 SO2 + ½ O2 = SO3 SO3 + H2O =H2SO4

In hydel power station, the motion produced in turbines is due to – (1) flow of water (2) burning of coal (3) burning of diesel (4) production of steam

Description : In hydel power station, the motion produced in turbines is due to – (1) flow of water (2) burning of coal (3) burning of diesel (4) production of steam

Last Answer : (1) flow of water Explanation: A water turbine is a rotary machine that converts kinetic energy and potential energy of water into mechanical work. Hydroelectric power comes from water at work, water in motion. To generate electricity, water must be in motion. This is kinetic (moving) energy.

Steam is intermittently admitted into the fuel bed during the production of producer gas to (A) Convert CO to CO2 (B) Increase the combustion rate (C) Increase the gas production rate (D) Minimise the chances of clinker formation

Description : Steam is intermittently admitted into the fuel bed during the production of producer gas to (A) Convert CO to CO2 (B) Increase the combustion rate (C) Increase the gas production rate (D) Minimise the chances of clinker formation

Last Answer : (D) Minimise the chances of clinker formation

Steam reforming of naphtha is a source of hydrogen production for nitrogenous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha? (A) 1.5 : 1 (B) 3.5 : 1 (C) 10 : 1 (D) 15 : 1

Description : Steam reforming of naphtha is a source of hydrogen production for nitrogenous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha? (A) 1.5 : 1 (B) 3.5 : 1 (C) 10 : 1 (D) 15 : 1

Last Answer : (B) 3.5 : 1

Commercial production of hydrogen for the manufacture of nitrogenous fertilisers is done by (A) Steam reforming of naphtha and cracking of natural gas (B) Electrolysis of water (C) Cryogenic separation of hydrogen from coke oven gas (D) All (A), (B) and (C)

Description : Commercial production of hydrogen for the manufacture of nitrogenous fertilisers is done by (A) Steam reforming of naphtha and cracking of natural gas (B) Electrolysis of water (C) Cryogenic separation of hydrogen from coke oven gas (D) All (A), (B) and (C)

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

Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis? (A) H2 separation from coke oven gas(B) Steam reforming of naphtha(C) Cracking of natural gas(D) Electrolysis of water

Description : Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis? (A) H2 separation from coke oven ga (B) Steam reforming of naphtha (C) Cracking of natural gas (D) Electrolysis of water

Last Answer : (D) Electrolysis of water

Consider the production of ammonia from methene and air as raw materials. The catalysts used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis. (A) (i) - Ni/Al2O3 ; (ii) - Cu - ZnO/Al2O3 (B) (i) - Fe/Al2O3 ; (ii) - Cu - ZnO/Al2O3 (C) (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3 (D) (i) - Fe/Al2O3 ; (ii) - Ni/Al2O3

Description : Consider the production of ammonia from methene and air as raw materials. The catalysts used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis. (A) (i) - Ni/Al2O3 ; (ii) - Cu - ZnO/ ... (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3 (D) (i) - Fe/Al2O3 ; (ii) - Ni/Al2O3

Last Answer : (C) (i) - Ni/Al2O3 ; (ii) - Fe/Al2O3

Energy recovery is typically via production of ____ a) Gas b) Heat c) Light d) Steam

Description : Energy recovery is typically via production of ____ a) Gas b) Heat c) Light d) Steam

Last Answer : Steam

In hydel power station, the motion produced in turbines is due to (1) flow of water (2) burning of coal (3) burning of diesel (4) production of steam

Description : In hydel power station, the motion produced in turbines is due to (1) flow of water (2) burning of coal (3) burning of diesel (4) production of steam

Last Answer : flow of water

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will (A) Remain the same (B) Be halved (C) Also be doubled (D) Become one fourth

Description : In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will (A) Remain the same (B) Be halved (C) Also be doubled (D) Become one fourth

Last Answer : (A) Remain the same