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SUMMARY:18 multiple choice questions
DTSTART;TZID=America/Los_Angeles:20260511T190000
DTEND;TZID=America/Los_Angeles:20260511T200000
LOCATION:https://www.learndesk.us/class-hi/4682778589265920/lesson/f7c4e5728deabc40eddb935af744ea7f?ref=outlook-calendar
DESCRIPTION: Q. 1. Which one of the following gases is used in combustion (a) Hydrogen (b) Oxygen (c) Nitrogen (d) Carbon dioxide Q.2. Which of the following is not a fossil fuel (a) Coal (b) Petroleum (c) Natural gas (d) Water gas Q.3. Substances that catch fire are called (a) acids (b) bases (c) combustible (d) burners Q.4. The SI unit of the calorific value of a fuel is- A. N/kg B. kJ/kg C. KW/kg D. J/kg Q.5. The color of the outer zone of a candle flame is- A. orange B. blue C. red D. yellow Q.6. Water cannot be used as a fire extinguisher to put out A. Burning charcoal B. Burning cloth C. Burning oil D. Burning wood Q.7. Which of the following factors are essential to ignite a fire A. Heat B. Fuel C. Air (oxygen) D. All of these Q.8. Which fuels are used for running automobiles a. Wood b Coal c. Diesel d Charcoal Q.9 Fuel may be a. Solid b. Liquid c. Gas d. All of these Q.10.The lowest temperature at which a substance catches fire is called its- a) Boiling point b. Melting point c....

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