When wood is used as a fuel in chullahs, gaps are left in between logs – McqOptions

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1.	When wood is used as a fuel in chullahs, gaps are left in between logs of wood. Why is it done so?
A.	To facilitate movement of air
B.	To prevent more consumption of wood
C.	To control temperature
D.	All of these
Answer» B. To prevent more consumption of wood

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