Subject :NSO Class : Class 7
In a pressure-kerosene stove,
(i) We pump kerosene and convert it into vapours.
(ii) The vapours are then ignited.
Which of the following is true about the above statements?
A (i) is a chemical change; (ii) is a physical change.
B (i) is a physical change; (ii) is a chemical change.
C Both (i) and (ii) are physical changes.
D Both (i) and (ii) are chemical changes.
Ans 1:
Class : Class 7
Ans 2:
Class : Class 9