Speed of Reaction

anpanman SG

A newspaper reported that a concrete building used to store rice exploded violently. The cause was reported to e due to the rice. Suggest a reason for this.

Ah well, need help with this particular question. ;D

UltimaOnline SG

A newspaper reported that a concrete building used to store rice exploded violently. The cause was reported to e due to the rice. Suggest a reason for this.

Ah well, need help with this particular question. ;D

#1 - Rice flour has high surface area to volume ratio, hence high rate of reaction.

#2 - Rice flour is carbohydrate, hence combustable.

ThunderFbolt SG

Terrorists are hungry. =D

SBS2601D SG

More like terrorists want to starve the city to submission? Laughing

deathmaster SG

lets see. there was water in the building?

assuming that there's water, rice + water in a hot concrete building, heated up by the midday sun, what process do you have here?

You have the cooking of rice.

and all of us knows that when rice is cook, they puff up. and boom. the building explode.