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Posted by Adarsh Bhardwaj 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
Aromatization is the conversion of a nonaromatic hydrocarbon to an aromatic hydrocarbon.
There are four common methods of aromatization.
1. Dehydrogenation of naphthenes
Naphthenes are a class of cyclic aliphatic hydrocarbons obtained from petroleum. They have the general formula <mathjax>CnH2n</mathjax>. The simplest naphthene is cyclohexane, C₆H₁₂. Catalytic dehydrogenation converts it to benzene.
C₆H₁₂ → C₆H₆ + 3H₂
2. Dehydroisomerization of naphthenes
Methylcyclopentane, C₆H₁₂, is catalytically isomerized and dehydrogenated to form benzene.
C₅H₉CH₃ → C₆H₆ + 3H₂
3. Dehydrocyclization of aliphatic hydrocarbons
Heptane is catalytically converted to toluene.
C₇H₁₆ → C₆H₅CH₃ + 4H₂
Small amounts of platinum on acidified alumina accomplish reactions (1), (2), and (3) readily.
4. Condensation of hydrocarbons
Propane is catalytically converted to benzene during the cracking of petroleum at 600-800 °C.
3C₃H₈ → C₆H₆ + 3CH₄ + 3H₂
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Yogita Ingle 5 years, 10 months ago
Entrepreneurship is the ability and readiness to develop, organize and run a business enterprise along with any of its uncertainties in order to make a profit. The most prominent example of entrepreneurship is the starting of new businesses.
In economics, entrepreneurship connected with land, labour, natural resources and capital can generate a profit. The entrepreneurial vision is defined by discovery and risk-taking and is an indispensable part of a nation’s capacity to succeed in an ever-changing and more competitive global marketplace.
Posted by Vikranth Reddy 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
Aram, in spite of being younger, was more practical. He was not as crazy as his elder cousin. He was neither a good rider nor as spontaneously efficient as his cousin. The two cousins had a wonderful rapport between them and they got along pretty well. Aram showed more consideration than Mourad in dealing with the important issue of the stolen horse. No sooner he came to know that the stolen horse was John Byro's, than he ran to Mourad to tell him the news. He wanted Mourad to return the horse only after he himself had learnt to ride properly.
Maurad was considered one of the craziest members of the narrator’s family. He was full of life and loved following his passions without caring for people around him. He could do anything to do the things he loved. He even risked his tribe's reputation for his passion for riding. Mourad had the knack of handling almost any critical situation. His heart was spilling with love for animals.
Posted by Yashika Pinjani 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
We know atomic number(z) = no of protons = no of electrons
Also mass number(A) = no of protons + no of neutrons
136C:
Here mass number = 13
Atomic number = Number of protons = 6
Number of neutrons = (mass number) – (Atomic number)
= 13 – 6 = 7
8O16:
Here mass number = 16
Atomic number = 8 Number of protons = 8 Number of neutrons = (mass number) – (Atomic number)
= 16 – 8 = 8
12Mg24:
Here Mass number = 24
Atomic number = Number of protons = 12
Number of neutrons = (mass number) – (Atomic number)
= 24 – 12 = 12
26Fe56:
Here mass number = 56
Atomic number = Number of protons = 26
Number of neutrons = (mass number ) – (Atomic number)
= 56 – 26 = 30
38Sr88:
Here mass number = 88
Atomic number = Number of protons = 38
Number of neutrons = (mass number) – (Atomic number)
= 88 – 38 = 50
Posted by Himanshu Singh 5 years, 10 months ago
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Posted by Adnan Rangrej 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
The three distinct components of economics:
(a) Production: It simply means creation of utility. Producer also have limited means while they have a variety of goods and services to choose from. The study of production explains that, as producer, how do they choose such combination, so that their revenue is maximized.
(b) Consumption: It is the process of using up utility, value of goods and services for the direct-satisfaction of our wants. Human wants are unlimited and no one can satisfy his all wants fully because resources to satisfy them are limited. The study of consumption explains that as consumer, how people allocate their income on the purchases of different goods and services so that their satisfaction is maximized
(c) Distribution: The study of distribution explains the economic principle on the basis of which income is distributed among the various factor of productions, how the national income arising from what has been produced in the country is distributed through wages and salaries, profits and interest.
Posted by Adnan Rangrej 5 years, 10 months ago
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Yogita Ingle 5 years, 10 months ago
The three distinct components of economics:
(a) Production: It simply means creation of utility. Producer also have limited means while they have a variety of goods and services to choose from. The study of production explains that, as producer, how do they choose such combination, so that their revenue is maximized.
(b) Consumption: It is the process of using up utility, value of goods and services for the direct-satisfaction of our wants. Human wants are unlimited and no one can satisfy his all wants fully because resources to satisfy them are limited. The study of consumption explains that as consumer, how people allocate their income on the purchases of different goods and services so that their satisfaction is maximized
(c) Distribution: The study of distribution explains the economic principle on the basis of which income is distributed among the various factor of productions, how the national income arising from what has been produced in the country is distributed through wages and salaries, profits and interest.
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Yogita Ingle 5 years, 10 months ago
- A thermodynamic process is reversible if the process can be turned back such that the system and surroundings return to their original states, with no other change anywhere else in the universe.
- This means in the Reversible processes if a process starts from initial state then it goes to final state and then it can reversed back from final state to initial state.
- Examples:- Isothermal expansion and compression, Electrolysis
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Yogita Ingle 5 years, 10 months ago
The payment mechanism that is typical to e-business is e-cash. The other payment mechanisms mentioned—CoD, cheques, and credit or debit cards—are used for transactions in traditional modes of business as well as in e-business. However, e-cash payment can be made only in the case of online transactions and cannot be used in traditional modes of business.
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Yogita Ingle 5 years, 10 months ago
The Scientific method is a process with the help of which scientists try to investigate, verify or construct an accurate and reliable version of any natural phenomena. They are done by creating an objective framework for the purpose of scientific inquiry and analyzing the results scientifically to come to a conclusion which either supports or contradicts the observation made at the beginning.
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