Question

Rajiv took three substances P, Q, and R and burnt them one by one. He noted down his observations given below. I. Substance P bums quickly producing heat and light. II. Substance Q bums in room temperature on its own. III. Substance R bums with the evolution of heat, light, and sound. Which of the following statements regarding the given information is correct? *

Answer 1

Answer:

. Rani took three substances P, Q, and R and burnt them one by one. He noted down his

observations given below. I. Substance P bums quickly producing heat and light. II.

Substance Q bums in room temperature on its own. III. Substance R bums with the

evolution of heat, light, and sound. Which of the following statements regarding the given

information is correct?

a) Substances P and Q are undergoing rapid combustion whereas R is undergoing an

explosion.

b) Substances P and R are undergoing spontaneous combustion whereas Q is undergoing

rapid combustion.

c) Substance P is undergoing rapid combustion, Q is undergoing spontaneous combustion

while R is undergoing an explosion.

d) Substance P is undergoing spontaneous combustion, Q is undergoing rapid combustion

while R is undergoing an explosion.