UPSC Exam  >  UPSC Notes  >  Class 6 to 12 NCERT Mindmaps for UPSC Preparation  >  Mindmap: Combustion and Flames

Mindmap: Combustion and Flames | Class 6 to 12 NCERT Mindmaps for UPSC Preparation PDF Download

Mindmap: Combustion and Flames | Class 6 to 12 NCERT Mindmaps for UPSC Preparation

The document Mindmap: Combustion and Flames | Class 6 to 12 NCERT Mindmaps for UPSC Preparation is a part of the UPSC Course Class 6 to 12 NCERT Mindmaps for UPSC Preparation.
All you need of UPSC at this link: UPSC
348 docs

Top Courses for UPSC

FAQs on Mindmap: Combustion and Flames - Class 6 to 12 NCERT Mindmaps for UPSC Preparation

1. What is combustion and how does it occur?
Ans. Combustion is a chemical process in which a substance reacts with oxygen to produce heat and light. It occurs when a fuel source combines with oxygen in the presence of an ignition source, such as heat or a spark. This reaction releases energy in the form of heat and light.
2. What are the different types of flames?
Ans. Flames can be categorized into three types: diffusion flames, premixed flames, and laminar flames. Diffusion flames occur when a fuel source and oxygen mix in a non-uniform manner, resulting in a yellow, flickering flame. Premixed flames occur when the fuel and oxygen mix uniformly before combustion, producing a blue flame. Laminar flames refer to flames that burn smoothly and steadily, without turbulence.
3. How does combustion contribute to air pollution?
Ans. Combustion releases various pollutants into the atmosphere, contributing to air pollution. When fuels burn, they release carbon dioxide (CO2), a greenhouse gas that contributes to climate change. Additionally, combustion can produce nitrogen oxides (NOx) and sulfur dioxide (SO2), which contribute to the formation of smog and acid rain. Incomplete combustion can also release carbon monoxide (CO) and particulate matter, which can be harmful to human health.
4. What are some examples of combustion reactions?
Ans. Combustion reactions occur in various everyday scenarios. Some examples include the burning of gasoline in car engines, the combustion of natural gas for heating and cooking, and the burning of wood in fireplaces. Combustion reactions also occur in industrial processes, such as power generation in thermal power plants and the burning of fossil fuels for energy production.
5. How can combustion be controlled to improve efficiency?
Ans. Combustion efficiency can be improved by controlling the air-fuel ratio, ensuring sufficient oxygen supply for complete combustion. Proper ventilation and insulation can reduce heat loss and improve efficiency. Additionally, using advanced combustion technologies, such as catalytic converters and clean-burning fuels, can help reduce emissions and improve overall combustion efficiency.
348 docs
Download as PDF
Explore Courses for UPSC exam

Top Courses for UPSC

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

video lectures

,

Viva Questions

,

Sample Paper

,

Extra Questions

,

study material

,

mock tests for examination

,

Exam

,

MCQs

,

Free

,

Objective type Questions

,

Mindmap: Combustion and Flames | Class 6 to 12 NCERT Mindmaps for UPSC Preparation

,

Previous Year Questions with Solutions

,

Mindmap: Combustion and Flames | Class 6 to 12 NCERT Mindmaps for UPSC Preparation

,

Summary

,

Important questions

,

pdf

,

past year papers

,

shortcuts and tricks

,

ppt

,

Semester Notes

,

Mindmap: Combustion and Flames | Class 6 to 12 NCERT Mindmaps for UPSC Preparation

,

practice quizzes

;