A) I
B) II
C) III
D) IV
Correct Answer: D
Solution :
Different substances catch fire at different temperatures. The ignition temperature of a substance is the lowest temperature at which a substance catches fire or starts burning. A substance cannot catch fire as longs as its temperature is lower than its ignition temperature. When substances I, II, III, and IV are heated to\[190{}^\circ C\]by Geeta, only the ignition temperature of substance IV is reached. Thus, only IV will catch fire. The correct answer is D.You need to login to perform this action.
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