Subject :NSO Class : Class 8
Which of the following statements are true?
I. Yellow flames are ideal for heating.
II. The substances which vaporise during burning give flames.
III. Luminous zone contains unburnt carbon particles.
IV. The non-luminous zone has highest temperature.
A I, II and III
B I, II and IV
C II, III and IV
D I, III and IV
Ans 1:
Class : Class 8
Luminouse zone doesnt contain carbon particles. NSO please fix these errors