The fireworks exhibition had awesome which is correct affects, effects, KEITH N DEB
The correct word to use in "The fireworks exhibition had awesome _______" is "effects."
The way to remember which word, affect or effect, is the proper word to use is to remember that affect is almost always a verb, and effect is almost always a noun.
If you wanted to use both in a sentence you could say that "when someone affects something they cause an effect." Affect is the verb, what they did, and effect is the noun, the thing that occurred.