Combustion and Flame
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Question 1 of 5
1. Question
Which of the following is/are true for ignition temperature?
1. It is the lowest temperature.
2. Its depends on physical nature.
3. It is also called kindling temperature.
Which of the above is/are correct.CorrectIncorrect -
Question 2 of 5
2. Question
Consider the following statements for carbon dioxide in fire extinguisher :
1. It is lighter than oxygen.
2. It does not harm the electrical equipment.
3. Carbon dioxide (CO2 ) is the best extinguisher.
Which of the following statements are correct ?CorrectIncorrect -
Question 3 of 5
3. Question
Which of the following are correctly matched?
1. Rapid combustion ———————————————- produces heat and light.
2. Spontaneous combustion —————————————————- phosphorus.
3. Explosion ————————————————————————— coal dust.CorrectIncorrect -
Question 4 of 5
4. Question
Which of the following are correctly matched for a candle?
1. Innermost zone ———————————————————————— black.
2. Middle zone —————————————————————————— red.
3. Outermost zone ———————————————————————— blue.CorrectIncorrect -
Question 5 of 5
5. Question
Which of the following is the correct order of calorific value?
CorrectIncorrect