Subject :NSO Class : Class 7
Which of the following statements is correct about the given changes?
(i) Drawing copper into a wire
(ii) Breaking of a glass
(iii) Heating an iron nail till red hot
(iv) Inflating a basketball
A (i) and (ii) are chemical changes while (iii) and (iv) are physical changes.
B (ii) and (iii) are chemical changes while (i) and (iv) are physical changes.
C All are physical changes.
D All are chemical changes.