Non-Renewable Sources Of Energy

The sources of energy, which can not be replaced quickly or another times if it is used once is called non renewable source of energy. This note provides an information about different types of nonrenewable natural resources.

Summary

The sources of energy, which can not be replaced quickly or another times if it is used once is called non renewable source of energy. This note provides an information about different types of nonrenewable natural resources.

Things to Remember

  • The sources of energy, which can not be replaced quickly or another time if it is used once is called non-renewable source of energy.
  • Fossils fuel, coal, petroleum (mineral oil), nuclear energy, gas, etc. are the example of non-renewable energy.
  • The energy formed by nuclear fusion and fission (nuclear reaction) is called nuclear energy.
  • Petrol, diesel, kerosene, lubricating oil, petroleum gas, etc. are commonly called petroleum or mineral oil.

MCQs

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Subjective Questions

Q1:

What is single entry system?


Type: Very_short Difficulty: Easy

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Answer: <p>Single entry system is that type of accounting system which has no fixed set of rules and principles for recording the financial transaction. It does not follow the basic principles of accounting.</p>

Q2:

What are the objectives of double entry system?


Type: Short Difficulty: Easy

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Answer: <p>The following are the objectives of double entry system:</p> <ol><li>To maintain the systematic record of financial transactions.</li> <li>To solve the problems arises on financial matters.</li> <li>To provide financial information to the management for making financial plans and decisions.</li> <li>To determine the financial position of a business on a particular date.</li> <li>To determine the amount of profit or loss of a business during a period of time.</li> </ol>

Q3:

What are the features of double entry system?


Type: Short Difficulty: Easy

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Answer: <p>The following are the main features of double entry system of book keeping:</p> <ol><li>Double effect: The double entry system maintains records showing double effect of each financial transactions. It makes record of each financial transaction into two different accounts on two opposite sides.</li> <li>Equal effect: Every financial transaction affects in two different accounts with equal amount. The debit side as well as credit side of two different accounts is affected by an equal amount.</li> <li>Debit and Credit: The double entry system provides two aspects of each transaction with the names '&tilde;Debit 'and 'Credit'. The one aspect of the transaction is debited and another is credited in the books of accounts.</li> <li>Scientific: The double entry system is a scientific system of book keeping. It has own rules and principles for recording financial transactions and preparing financial statements.</li> <li>Complete record: The double entry system book keeping system maintains records in all personal and impersonal accounts. Such complete record of financial transactions helps to identify the actual financial position of a business organization.</li> </ol>

Q4:

What are the advatages of double entry system?


Type: Short Difficulty: Easy

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Answer: <p>The following are the advantages of double entry system:</p> <ol><li>It helps the record of financial transaction in a systematic and scientific manner.</li> <li>It helps to prepare trail balance to check arithmetical accuracy of books of accounts.</li> <li>It facilitates for making audit of the books of accounts.</li> <li>It helps to ascertain the financial position of the business by preparing trading and profit/ loss account and balance sheet.</li> <li>It provides the financial information to the management for making plans, policies, and decisions.</li> </ol>

Q5:

What are the disadvantages of double entry system?


Type: Short Difficulty: Easy

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Answer: <p>The following are the disadvantages of double entry system:</p> <ol><li>It is an expensive system because a number of books are required to maintain.</li> <li>It is not suitable for small business having limited number of transactions.</li> <li>It consumes more time for recording the financial transactions and preparing different statements.</li> <li>It requires trained and qualified person for making record of the financial transactions.</li> </ol>

Q6:

Differentiate between single entry system and double entry system.


Type: Short Difficulty: Easy

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Answer: <p>The differences between single entry system and double netry system are as follows:</p> <table width="658"><tbody><tr><td><strong>S.N</strong></td> <td><strong>Single Entry System</strong></td> <td><strong>Double Entry System</strong></td> </tr><tr><td>1</td> <td>Not based on the concept of duality.</td> <td>Based on the concept of duality.</td> </tr><tr><td>2</td> <td>Maintain the cash book and personal account of debtorsd and creditors.</td> <td>Maintains personal, real and nominal accounts.</td> </tr><tr><td>3</td> <td>It does not maintain nominal account so it cannot help to ascertain true profit or loss of the business.</td> <td>it can help to ascertain true profit or loss of the business.</td> </tr><tr><td>4</td> <td>It cannot help to prepare trial balance.</td> <td>It can help to prepare trial balance.</td> </tr><tr><td>5</td> <td>It is suitable for small businesses.</td> <td>It is suitable for large businesses</td> </tr><tr><td>6</td> <td>It is not acceptable for tax purpose.</td> <td>It is acceptable for tax purpose.</td> </tr></tbody></table>

Q7:

What is double entry system?


Type: Very_short Difficulty: Easy

Show/Hide Answer
Answer: <p>Double Entry system is refers to such accounting system under which every financial transction is recorded into two separate account with equal amount to determine the true profit or loss and financial position of the business.</p>

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accounting system
Non-Renewable Sources Of Energy

Non-Renewable Sources Of Energy

Fossils fuel

When dead bodies of plants and animals are buried inside the earth's surface for several millions of years, due to high temperature and pressure of the earth, they decompose in theabsence of oxygen and form coal and petroleum. These products are called fossil fuel.

Coal:

It is thenon-renewable source of energy. It is used as important sources of fuel in industries like iron, industries, steel industries, brick factory, cement factory etc. It is used to run trains and used in thethermal plant for production of electricity.

The coal which is available on earth are of different types on the basis of percentage of carbon present in them, coalsare classified into 4 types:

Types of coal(Percentage of carbon)

  1. Peat (11% of carbon)
  2. Lignite (38% of carbon)
  3. Bituminous (65% of carbon)
  4. Anthracite (98% of carbon

Among these, Anthracite is the best quality of coal, peat and lignite are low quality of coal.

Petroleum (mineral oil)

Petrol, diesel, kerosene, lubricating oil, petroleum gas, etc. are commonly called petroleum or mineral oil. It is obtained as a crude oil from its mine, then it is purified to petrol, diesel, kerosene, etc, and remaining 'tar' which is used to make the tarred road. It is the most important fuel, which fulfills the demand of energy of the world. It is used by different vehicles, engine, factories, industries, etc as a chief source of fuel. It is also used to generate electricity.

During the purification of crude oil, petrol gas is liquefied to LPG gas is liquefied petrol gas) which we use in your kitchen for cooking purpose.

Advantages of coal, mineral oil and gas:

  • It is a chief source of energy and more abundant in comparison to another type of energy.
  • It is easy for transportation.
  • It is used to generate electricity.
  • It is multipurpose fuel. Thus, it is used to run different vehicles even aeroplane.

Nuclear energy:

The energy formed by nuclear fusion and fission (nuclear reaction) is called nuclear energy.

When two light nuclei are combined together to form a heavy nucleus this process is known as nuclear fusion. During nuclear fusion, a large amount of energy is released.

When a heavy nucleus of uranium, plutonium is bombarded by neutrons then these nuclei break into two or more nuclei liberating a large amount of energy. This process is called nuclear fission. During nuclear fission reaction, some mass is lost to form energy. The energy thus formed is used to boil water into steam and steam engine is operated from it.

Lesson

Energy

Subject

Science

Grade

Grade 10

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