FORM 1 7.2 COMBUSTION
Authored by Nad Zain
Science
3rd Grade - University
Used 297+ times
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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Three conditions needed for combustion
Petrol, oxygen, fire
Petrol, paper, fire
Petrol, wood, fire
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why the candle flame is extinguished when the boy blow?
The saliva from the boy put off the flame
The oxygen is removed from the flame
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do we use water to extinguish fire?
To removed the oxygen
To removed the fuel
To removed the heat
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
what is the best way to extinguished the fire?
water
foam
fire blanket
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the fire blanket work?
To reduce the heat and eventually extinguish the fire
To reduce the oxygen and eventually extinguish the fire
To reduce the fuel and eventually extinguish the fire
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Metals like potassium and sodium are kept in paraffin oil. Why?
Potassium and sodium metals are flammable when exposed to heat.
Potassium and sodium metals are flammable when exposed to fuel.
Potassium and sodium metals are flammable when exposed to air.
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