Question

7.i) It is difficult to burn a heap of Green Leaves, but dry leaves catch fire easily Give reason (2 marks) ii) 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? (1mark) A) Substances P and Q are undergoing rapid combustion whereas R is undergoing explosion B) Substances P and Rare 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 explosion. D) Substance P is undergoing spontaneous combustion, Q is undergoing rapid combustion while R is undergoing explosion.​

Answer 1

Answer:

1. here is the answer

Explanation:

please mark as brainlist

Answer 2

Answer:

this is your answer hope it's helpful