0
question_answer1) Four substances P, Q, R, and S were brought one by one near a lighted candle. It was observed that only substance Q bums readily. Substances P and R burn after sustained heating and substance S does not bum at all. Among all the substances given, which substance has the lowest ignition temperature?
question_answer2) Which gas is used in fire extinguishers?
question_answer3) Which of the following substances can be used to extinguish a fire in an oil well?
question_answer4) Which of the following is not a characteristic of a good fuel?
question_answer5) The calorific value of a fuel is 330000 kJ/kg. 0.9634 kg of the fuel is taken for combustion. The total amount of heat energy (in kJ) produced during combustion is
question_answer6) 4.120 kg of a fuel was burnt to produce 178000 kJ of energy. The calorific value (in kJ/kg) of the fuel is
question_answer7) Which of the following statements is correct?
question_answer8) Which of the following materials does not bum with. a flame?
question_answer9) Goldsmiths blow the outermost zone of flame with a blow-pipe for melting gold and silver. Why do they use the outermost zone?
Please Wait you are being redirected....
You need to login to perform this action.You will be redirected in 3 sec
OTP has been sent to your mobile number and is valid for one hour
Your mobile number is verified.