Upon completing the quest, players choose the skill that these rewards go towards. These rewards usually come in the form of items, like lamps or books.
*It is highly recommended to put this experience into skills that are hard, slow or expensive to raise, such as Prayer, Smithing, Agility, Crafting or Herblaw.
Observatory Quest - This quest can possibly grant $ Level * 25 + 125 $ experience in Attack, Strength, Defense, or Hits, depending on which constellation you last observed during the quest, which is completely random but can be rerolled. (Some constellations do not give experience in any skill)
If you are 100% fatigue, you will still gain reward experience, however this does not apply for Biohazard. This is an oversight as quest experience rewards should not generate fatigue.
Unlike the successors of Runescape Classic, in RSC all Quests rewarding experience do so dependent on the player's level. It is important to note however that:
The quest Druidic Ritual is a special case only known to reward 250 experience since there is no possible way to train Herblaw before the quest.
The quest Fishing Contest is another special case where the experience offset is changed at level 24.
In the early days of Runescape Classic many fan sites writing quest guides knew at most that quests gave experience in a skill but did not know exactly how much so they would label it as "some experience". Others misbelieved that they gave constant experience.