The calorific value of fuel is expressed in
joule
kJ/kg
kJ
none of the above
B.
kJ/kg
Which of the following causes acid rain ?
carbon dioxide
sulphur dioxide
carbon monoxide
oxides of sulphur and nitrogen
D.
oxides of sulphur and nitrogen
The burning of candle is an example of
spontaneous combustion
rapid combustion
slow oxidation
explosion
C.
slow oxidation
The zone of the candle flame which is moderately hot is called
non-luminous zone
luminous zone
inner dark zone
lowest blue zone
B.
luminous zone