CTET 2 Math and Science 21 Dec 2021 Paper

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Question : 73 of 150

Marks: +1, -0

Which of the following statements is correct regarding the temperature of the blue zone i.e. the outermost zone of the flame?

The temperature cannot be measured
The temperature is around 100°C
The temperature is much higher than 100 °C
The temperature is less than 10°C

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