Question

40. Rajiv took three substances P, Q, and R are burnt one by one. He noted down his observations given below. (i) Substance P burns quickly producing heat and light.(ii) Substance Q burns in room temperature on its own.(iii) Substance R burns with the evolution of heat, light and sound. Which of the above statements regarding the given information is correct?

Substances P and Q are undergoing rapid combustion where as R is undergoing explosion.
Substances P and R are undergoing spontaneous combustion Where as Q is undergoing rapid combustion.
Substance P is undergoing rapid combustion, Q is undergoing spontaneous combustion while R is undergoing explosion.
Substance P is undergoing spontaneous combustion Q is undergoing rapid combustion while R is undergoing explosion.

Answer 1

3 is the answer
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Answer 2

Answer:

option (c) Substance P is undergoing rapid combustion, Q is undergoing spontaneous combustion while R is undergoing explosion.

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