Question

red zone
orange zone
Why are gascous fuels considered better than liquid or solid fuels.
Why do we say that burning of fuels can cause 'health hazards?
4.
zone
Value Based Question
(10 H) kJ/kg
(H-10) kJ/kg
Amceta was upset because she could not find her black pencil and her coloured
pencils set for completing her painting. Her elder sister, Suneeta helped her to
locate them and then guided her in colouring her painting. She then told her that we
need to be careful as we often need to fulfill a number of conditions for completing
our tasks. She gave her the example of the phenomenon of 'combustion' and told
hier that combustion can be started and sustained, only if three conditions are
simultaneously satisfied.
carbon monoxide
nitrogen dioxide
The highest temperature zone of a candle Name, is its
in pure oxygen, equals H kilojoule The calorific fuel, of that fuel, would equa
The amount of heat produced, on complete burning of 10 kg of a given
The gas produced, due to incomplete combustion of carbon fuels, is
D. Answer the following questions in brief.
Define the term 'combustible material? Give two examples of combusti
State the three conditions that are needed for combustion to take place
State the condition under which slow combustion of a material takes place
State any two characteristics of an ideal fuel.
Why is water not used in controlling electrical fires?
Draw a diagram showing the different zones of candle flame. Label the zot
Calorific value of wood is 18,000 kJ/kg. How much of wood is required to
3
yellow
blue zone
4.
(0.1 H) kJ/kg
(H+10) kJ/kg
5.
1
materials
2
3.
5.
6.
E
Answer the following questions,
1
which contains:
(a) unburnt vapours of wax.
(b) unburnt carbon particles,
2.
produce 360,000 kJ of heat energy?
O carbon dioxide
sulphur dioxide
State the values displayed by Suneeta.
State the three conditions that need to be simultaneously satisfied for starting and
sustaining combustion,
Ask the students to think of situations/tasks which need two or more conditions for
their completion.
Define calorific value of a fuel'.
Something To Do
Conduct a survey of houses in your locality and find their average monthly
consumption of LPG/PNG.
Prepare a report on the precautions that should be taken while using CNG fuel.
in vehicles.
'Wastes' have been traditionally disposed off by burning them. 'Waste combustors'
are used to dispose off hospital and industrial waste. Find out how these
combustors work and their effects on the environment.
Find out about the different types of fire extinguishers. Write the type and
locations of the fire extinguishers kept in your school.
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Answer 1

Answer:

please write your question once again because wverything is mix it in...