Why do Goldsmiths use a blow -pipe?...

Why do Goldsmiths use a blow -pipe?

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How will you prove that air is required for combustion?
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How can you feel air ?
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Why do Goldsmiths use a blow -pipe?
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Why do combustible substances not catch fire on their own?
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Explain Ignition temperature, combustible substance, supporter of comb...
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Given the reaction: C + O2 rarr CO2 + 385 kJ Calculate the calorif...
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Why is coke considered a better fuel than coal? Give four reasons.
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What do you mean by fire fighting?
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What should you do to put out the fire?
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Why should water not be used to extinguish fire due to: Kerosene or p...
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Why should water not be used to extinguish fire due to: Short circuit...
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Why do we wrap a blanket around a person who hass caught in fire?
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Why are we advised not to sleep in a room with a burning coal ingithi ...
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Explain global warming.
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What is acid rain? What are its effects on plants ?
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Explain the zones of candle with the help of a diagram .
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Describe Rapid combustion
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Describe Spontaneous combustion
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Describe Slow combustion
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