why is water used as a medium in so many heat exchange processes?

1 Answer

Answer :

it distributes heat energy uniformly

Related questions

Description : Are all 1031 land exchange processes the same?

Last Answer : No. The processes differ quite a bit. The Section 1031 code governs the taxes associated with the land exchange, so that people who exchange land aren't taxed as if they were just selling land and thus being subject to capital gains taxes.

Description : In process scheduling, …………………… determines when new processes are admitted to the system. A) long term scheduling B) medium term scheduling C) short term scheduling D) none of the above

Last Answer : A) long term scheduling

Description : What will happen if world stops using dollar as exchange medium?

Last Answer : It would make international trade more difficult for US corporations, especially if our large trading partners said you must pay us in euros or we will only pay in euros . But really, it isn't ... would be, what occurred to have people getting out of dollars and into euros (or other currency)?

Description : Why is currency accepted as a medium of exchange? -SST 10th

Last Answer : . Modern forms of money include currency-paper notes and coins. . Modern currency is not made of precious metals such as gold, silver and copper. . The modern currency is without any use of its ... is allowed to issue currency. . No individual in India can legally refuse a payment made in rupees.

Description : How does money act as a medium of exchange ? -SST 10th

Last Answer : Money acts as a medium of exchange because any good can be bought or sold with the money as their value is already decided in the market in terms of money.

Description : Why is modern currency accepted as a medium of exchange without any use of its own ? Find out the reason. -SST 10th

Last Answer : Modern currency is accepted as a medium of exchange: 1. Modern currency is accepted as a medium of exchange because it is authorized by the central government of a country. 2. In India, RBI issues the ... to issue the currency. 3. The rupee cannot be refused legally as a medium of payment in India.

Description : Modem currency is without any use of its own'; then why is it accepted as a medium of exchange ? -SST 10th

Last Answer : Modern currency is accepted as a medium of exchange because it is authorised by the government of the country.

Description : How is money used as a medium of exchange ? Explain with examples. -SST 10th

Last Answer : Money is used as a medium of exchange by: 1. Goods and services can be bought and sold with the use of money. For example, someone who wants shoes can buy it with money and if someone wants ... it's the intermediary in the exchange process. Anything in the market can be bought and sold with it.

Description : What is money ? Why is modern money currency accepted as a medium of exchange ? -SST 10th

Last Answer : Money is the medium of exchange used for exchanging goods, commodities or properties. Before money, barter system was present in the society, Modern money currency is accepted as a medium of exchange ... No individual can legally refuse payment in rupees so it is used as a medium of exchange.

Description : What is it that can act as a medium of exchange in transactions? -SST 10th

Last Answer : It is money that can act as a medium of exchange in transactions.

Description : Why is the rupee widely accepted as a medium of exchange? -SST 10th

Last Answer : (i) In India, the Reserve Bank of India issues currency notes on behalf of the central government. (ii) As per Indian law, no other individual or organisation is allowed to issue currency. (iii ... legally refuse a payment made in rupees. Hence,the rupee is widely accepted as a medium of exchange.

Description : What is money? Why is modern money currency accepted as a medium of exchange? -SST 10th

Last Answer : Money is something that can act as a medium of exchange in transactions. Everyone prefers to receive payments in money and then exchange the money for things they want. For example, take the case of ... a person holding money can easily exchange it for any commodity or service that he or she wants.

Description : How does money act as medium of exchange ? -SST 10th

Last Answer : It acts as an intermediate in the exchange process and transactions. We can buy things if we have money in our pockets.

Description : How is money used as a medium of exchange ? -SST 10th

Last Answer : Money acts as a medium of exchange in the following ways: (i) Overcomes the problem of double co-incidence of wants. For example, if a person needs wheat in exchange of tea, then he/she must search ... such searches redundant. (ii) Acts as a medium of deferred payment. (iii) Has a store value.

Description : Why is modern currency accepted as a medium of exchange without any use of its own ? -SST 10th

Last Answer : Modern currency is accepted as a medium of exchange without any use of its own because: (i) Modern currency is authorized by the government of a country. (ii) In India, the Reserve Bank of ... settling transactions in India. (v) No individual in India can legally refuse a payment made in rupees.

Description : ‘‘The rupee is widely accepted as a medium of exchange.’’ Explain. -SST 10th

Last Answer : The rupee is widely accepted as a medium of exchange because: (i) The currency is authorised by the government of the country. (ii) In India, the Reserve Bank of India issues currency notes ... legally refuse a payment made in rupees. Hence, the rupee is widely accepted as a medium of exchange.

Description : Barter transactions means - (1) Goods are exchanged with gold. (2) Coins are exchanged for goods. (3) Money acts as a medium of exchange. (4) Goods are exchanged with goods.

Last Answer : (4) Goods are exchanged with goods. Explanation: Barter is a system of exchange where goods or services are directly exchanged for other goods or services without using a medium of exchange, ... crisis, such as when the currency may be either unstable or simply unavailable for conducting commerce,

Description : Portal is a system of a) A gateway to information or news about a range of services b) Communication Medium c) Medium of exchange d) Online payment medium

Last Answer : a) A gateway to information or news about a range of services

Description : 1. Which of the following IS a function of money? a. medium of exchange b. store of value c. unit of accounting d. all of the above

Last Answer : a. medium of exchange

Description : For which function money is accepted as a unit of account? (a) Measure of value. (b) Store of value. © Medium of exchange. (d) Standard of deferred payment.

Last Answer : (a) Measure of value.

Description : Which of the following function does money serve when used to purchase or sell different goods and services? (a) Store of value ; (b) Medium of exchange ; (c) Standard of value ; (d) Display of power

Last Answer : (b) Medium of exchange ;

Description : Which of the following function does money serve when used to measure the prices of different goods and services? (a) Store of value ; (b) Medium of exchange ; (c) Standard of value ; (d) Display of power

Last Answer : (c) Standard of value ;

Description : Barter transactions means (1) Goods are exchanged with gold. (2) Coins are exchanged for goods. (3) Money acts as a medium of exchange. (4) Goods are exchanged with goods.

Last Answer : Goods are exchanged with goods.

Description : Heat Processing and Decomposition Are these two processes one ?

Last Answer : Yes, both reactions are done by heating.

Last Answer : 3 heat transfer processes. Namely: 1. Transportation. 2. Circulation. 3. Radiation.

Description : Which of the following heat treatment processes is used for softening the hardened material? (A) Normalising (B) Tempering (C) Annealing (D) None of these

Last Answer : (B) Tempering

Description : Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is __________ percent. (A) 0.02 (B) 0.2 (C) 0.35 (D) 0.5

Last Answer : (B) 0.2

Description : (i)State why heat changes in physical and chemical processes are indicated by enthalpy changes and not by entropy changes? (ii)What are the limitations of First Law of thermodynamics?

Last Answer : (i) Most of the processes are carried out in an open system i.e, at constant pressure. (ii)(a) Can’t explain the feasibility of the reaction. (b)It poses no restriction on the direction of flow of heat. (c)Practically it is not possible to convert the heat energy into an equivalent amount of work.

Description : All welding processes require pressure along with heat. a) Yes b) No, fusion doesn’t require c) Can’t be stated d) None of the listed

Last Answer : b) No, fusion doesn’t require

Description : Consider the following processes: [IES-1999] 1. Constant pressure heat addition. 2. Adiabatic compression. 3. Adiabatic expansion. 4. Constant pressure heat rejection. The correct sequence of these processes in Rankine cycle is: (a) 1, 2, 3, 4 (b) 2, 1, 4, 3 (c) 2, 1, 3, 4 (d) 1, 2, 4, 3

Last Answer : (c) 2, 1, 3, 4 

Description : Which of the following heat treatment processes is usually applied to castings? (A) Tempering (B) Annealing (C) Normalising (D) Carburising

Last Answer : (D) Carburising

Description : It states that mass is a commodity that can neither be heated nor destroyed with the exception of nuclear processes where the conversion of mass into energy is a fundamental principle  a. Law of ... Conservation of Energy  c. Law of Conservation of Power  d. Law of Conservation of Heat

Last Answer : Law of Conservation of Mass

Description : If a system after undergoing a series of processes, returns to the initial state then  (a) process is thermodynamically in equilibrium  (b) process is executed in closed system cycle  (c) its entropy will ... sum of heat and work transfer will be zero  (e) no work will be done by the system.

Last Answer : Answer : d

Description : First law of thermodynamics furnishes the relationship between  (a) heat and work  (b) heat, work and properties of the system  (c) various properties of the system  (d) various thermodynamic processes  (e) heat and internal energy.

Last Answer : (b) heat, work and properties of the system

Description : Processes which occur without the addition or withdrawal of heat from the surrounding are called what?

Last Answer : ANSWER: ADIABATIC

Description : It is a common observation that naturally occurring processes have a particular direction associated with them. For instance, heat flows from a hot body to a colder body. The property of a system ... this natural direction of events is called w) energy x) entropy y) enthalpy z) equilibrium 

Last Answer : ANSWER: X -- ENTROPY

Description : Water is normally used as a coolant in the heat exchange equipments mainly because of its (A) Abundance & high heat capacity (B) Low density (C) Low viscosity (D) High fluidity

Last Answer : (A) Abundance & high heat capacity

Description : Cooling towers operate through a ____process that efficiently cools the already cycled water to be reused. 1. Heat exchange 2. Heat expand 3. Heat transfer 4. None of above

Last Answer : Heat transfer

Description : A __________ is a type of heat exchange system where water is heated to its' boiling point via combustion of a fuel blown through a tube submerged in water. a. Condensate loop b. Hyperbolic cooling tower c. Steam boiler d. All of above

Last Answer : c. Steam boiler

Description : What are two ways water can be used as a heat medium in cooking?

Last Answer : Need answer

Description : A definite amount of an ideal gas `(gamma = 1.5)` undergoes change of state in which heat exchange is equal to work done `(q=w)`. Molar heat capacity

Last Answer : A definite amount of an ideal gas `(gamma = 1.5)` undergoes change of state in which heat exchange is equal to work ... : A. 2R B. 3R C. R D. `3/2R`

Description : The first law of thermodynamics is simply the case of – (1) Charles law (2) Newton's law of cooling (3) The law of heat exchange (4) The law of conservation of energy

Last Answer : (4) The law of conservation of energy Explanation: The first law of thennodynamics is a version of the law of conservation of energy for thermodynamic systems. It states That the change in the internal energy of a system is equal to the heat added to the system plus the work done on the system.

Description : In a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation. (A) Adiabatic (B) Isothermal (C) Non-adiabatic (D) None of these

Last Answer : (C) Non-adiabatic

Description : 6. Liquefaction of gases cannot be done by (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Merely compressing it beyond critical pressure (D) Adiabatic expansion against a piston or in a turbine

Last Answer : (C) Merely compressing it beyond critical pressure

Description : Claude process of gas liquefaction employs (A) Merely compression of gas beyond its critical pressure (B) Joule-Thomson expansion cooling (C) Heat exchange with colder stream (D) Adiabatic expansion against a piston or in a turbine

Last Answer : (D) Adiabatic expansion against a piston or in a turbine

Description : Linde process of gas liquefaction employs (A) Exchange of heat with colder stream (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion) (C) Adiabatic expansion against a piston or in a turbine (D) Merely compressing the gas beyond its critical pressure

Last Answer : (B) Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

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

Last Answer : when the gas expands adiabatically

Description : Amount of heat needed to rate the temperature of a substance by 1°C  a. Heat Exchange  b. Heat Engine  c. Specific Heat  d. None of the above

Last Answer : Specific Heat

Description : During throttling process  (a) heat exchange does not take place  (b) no work is done by expanding steam  (c) there is no change of internal energy of steam  (d) all of the above  (e) entropy decreases.

Last Answer : Answer : d