Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Combustion and Flame, Class 8, Science. You can practice these practice quizzes as per your speed and improvise the topic.Q.Gas necessary for combustion is:a)nitrogenb)sulphur dioxidec)hydrogend)oxygenCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Gas necessary for combustion is Oxygen.

Explanation:

Combustion is a chemical reaction in which a fuel reacts with an oxidizing agent (usually oxygen) to produce heat and a mixture of reaction products. The fuel and oxygen are the two essential components of the combustion process. Without either of these, combustion cannot occur.

Oxygen is a highly reactive gas that readily combines with other elements and compounds to form new substances. When oxygen combines with a fuel (such as gasoline, wood, or propane), it releases energy in the form of heat and light. This process is known as combustion.

During combustion, the fuel and oxygen react to form new molecules of carbon dioxide, water vapor, and other products. These products are usually gases that are released into the air, along with the heat and light.

Therefore, it can be concluded that oxygen is the gas necessary for combustion.

Answer

Combustion takes place only in presence of oxygen. Oxygen supports the combustion of substances in which heat is evolved.... Oxygen speed up the combustion process....so the correct answer is D.

Answer

Gas necessary for combustion is oxygen.

Combustion is a chemical reaction that occurs between a fuel and an oxidizing agent, usually oxygen. During combustion, the fuel is broken down into molecules, releasing energy in the form of heat and light. Oxygen is necessary for this reaction to occur because it reacts with the fuel, breaking it down and releasing energy.

Some key points to consider include:

- Oxygen is a highly reactive gas that readily participates in chemical reactions.
- In combustion, oxygen reacts with a fuel to release energy in the form of heat and light.
- Without oxygen, combustion cannot occur, and the fuel will not burn.
- Other gases, such as nitrogen and sulfur dioxide, are not necessary for combustion and do not participate in the reaction in the same way that oxygen does.

Answer

Gas necessary for combustion is oxygen.

Explanation:
Combustion is a chemical reaction that involves the combination of a fuel with oxygen to produce heat and light. In order for combustion to occur, the following three components are necessary:

1. Fuel: The material that will undergo combustion
2. Heat: The energy that is required to initiate the combustion reaction
3. Oxygen: The gas that is necessary for the combustion reaction to occur

Out of the given options, only option 'D' - oxygen, is necessary for combustion. Nitrogen and sulphur dioxide are not involved in the combustion process, while hydrogen can be a fuel, but it requires oxygen to undergo combustion.

Therefore, oxygen is the gas necessary for combustion.

Answer

Because it help in burning

Answer

So if we have carbon and we oxidize it to form carbon dioxide, the reaction of carbon withoxygen will release a lot of energy in the form of heat. Therefore,oxygen is necessary for burning because that is how we define burning.

Answer

Yes oxygen gas is compulsory for combustion. Without Oxygen gas combustion is impossible.

Answer

Yeah it is taught is in class 5 also that oxygen supports burning

Answer

Three conditions should be fulfilled for combustion to take place-
1. combustible substances
2.supporter of combustion i.e. oxygen
3.attainment of ignition temperature.

Answer

Oxygen

Answer

With out oxygen ntg works

Answer

D

Answer

To burn anything it requries oxygen

Answer

D) oxygen

As oxygen support burning .

Answer

Oxygen is necessary to combustion take place you can prove it practically burn a candle now cover it with a glass you will se that the candle flame is off due to we cut off the supply of air(oxygen) to the candle. minimum 21% of oxygen is needed to burn any substance. I hope this is clear to you.

Answer

Oxygen is the only gas which supports cumbustion therefore D will be the answer

Answer

Nitrogen

Answer

The correct answer for this question is oxygen. The reason is that in the presence of oxygen, burning takes place. If the supply of oxygen is not there, combustion would not take place. When the oxygen available is used by the object ( example-: candle), because of no supply of oxygen it will get fused. Burning takes place only in the presence of oxygen.

Answer

Oxygen is required for combustion. If oxygen is not present, the combustion will automatically stop or will not take place. So when a candle is covered with an inverted glass, the candle continues to burn for some time after which it stops burning. This is because oxygen is used up and no more oxygen is left.

Answer

Oxygen helps in burning that's why d is correct. Plz upvote..

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Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Linear Equations, Class 8, Mathematics . You can practice these practice quizzes as per your speed and improvise the topic.Q.Find the solution of2x−3=7.

Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Linear Equations, Class 8, Mathematics . You can practice these practice quizzes as per your speed and improvise the topic.Q.Find the solution of2x−3=7.

Needed a Document for Electrochemistry class8? Related: NCERT Solutions - Combustion and Flame, Science, Class 8

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