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Q.

Colours of flame produced by kerosene lamp, candle and Bunsen burner are respectively.

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a

Blue, Yellow and Yellow

b

Yellow, Yellow and Blue

c

Orange, Blue and Yellow

d

Yellow, Orange and Yellow

answer is B.

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Detailed Solution

Kerosene lamp produce Yellow colour flame due to partial combustion of fuel.

Candle produce Yellow colour flame due to partial combustion of wax.

Bunsen burner produce Blue colour flame due to complete combustion of fuel.

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Colours of flame produced by kerosene lamp, candle and Bunsen burner are respectively.