PDF chapter test TRY NOW

Write short answer question:
 
Indicate whether the following statements are True or False. Also write the false statements in their correct form.
 
a. Air is necessary for combustion.
 
b. Magnesium is a non-combustible metal.
 
c. Carbon dioxide is an excellent fire extinguisher.
 
d. Calorific value of wood is higher than that of coal.