Fill in the blanks.
zone.
1. The zone that produces light in a candle flame is called the
2. The unburnt carbon particles escaping from a candle flame form a black,
powdery substance called
3. The amount of heat evolved, in joules, when one kilogram of fuel is burnt
completely, is called the
value of the fuel.
4. Combustion can lead to the formation of
dioxide and oxides of
5.
can lead to the melting of polar ice.
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Answers
1.This blue coloured zone is the non-luminous part of the flame. The yellow colour region which is the bright part of the flame is the middle zone. ... The least hot region of the flame is present innermost. This inner zone is black due to the presence of unburnt wax vapours.
2.The unburnt carbon particles escaping from candle flame from the pollutants called soot in air. Soot is impure carbon particles resulting from the incomplete combustion of candle.
3.Total mass of fuel = 4.5 kg Total heat produced = 180,000 kJ Heat produced by burning 1 kg of fuel = 180,000 kJ/4.5 kg = 40,000 kJ/kg. So, calorific value of fuel = 40,000 kJ/kg.
4.Image result for Combustion can lead to the formation of dioxide and oxides of
The combustion reaction occurs when the diesel fuel hydrocarbons react with oxygen to produce carbon dioxide and water. ... Incomplete combustion leads to emittance of carbon monoxide, nitrogen oxides, sulfur oxides, volatile organic compounds, and helps create ground level ozone.
5.The effects of global warming in the Arctic, or climate change in the Arctic include rising air and water temperatures, loss of sea ice, and melting of the Greenland ice sheet with a related cold temperature anomaly, observed since the 1970s. ... The melting of Greenland's ice sheet is linked to polar amplification.
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Answer:
The Zone that produce light in the candle flame is the lpg