Science 7

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  1. Which part of the Bunsen burner flame is the hottest? a) Outer cone
    b) Inner blue cone
    c) Bottom of the flame
    d) The entire flame
  2. What is the purpose of the air hole on a Bunsen burner? a) To release gas
    b) To control the size of the flame
    c) To adjust the amount of oxygen for combustion
    d) To turn off the flame
  3. What is placed on the tripod stand to hold a beaker when boiling water? a) Gauze mat
    b) Heatproof mat
    c) Flask
    d) Tongs
  4. Which type of heat transfer occurs when a Bunsen burner heats the beaker? a) Conduction
    b) Convection
    c) Radiation
    d) Evaporation
  5. Why is it important to tie back long hair when using a Bunsen burner? a) To see the flame better
    b) To prevent hair from catching fire
    c) To follow school rules
    d) To look neat
  6. What piece of safety equipment should always be worn when working with a Bunsen burner? a) Lab coat
    b) Gloves
    c) Safety goggles
    d) Helmet
  7. What should you place the Bunsen burner on before lighting it? a) Tripod stand
    b) Gauze mat
    c) Heatproof mat
    d) Wooden surface
  8. What is the role of the gauze mat in the Bunsen burner setup? a) To catch spills
    b) To distribute heat evenly
    c) To protect the table
    d) To measure temperature
  9. Which of the following is NOT a method of heat transfer? a) Conduction
    b) Convection
    c) Radiation
    d) Friction
  10. How should you turn off the Bunsen burner after use? a) Blow out the flame
    b) Turn off the gas supply
    c) Cover the flame with gauze
    d) Wait for it to extinguish itself