Are there mountains in the tropical rainforest?

Yes, tropical rainforest is biome found within (roughly) 10 degrees north or south of the equator. They are common in Asia,Australia, Africa, South America, Central America, Mexico and on many of the Pacific Islands. There are several Mountains ranges in these tropical rainforest region. The most notable some are Mount Kilimanjaro in Tanzania, Mount Kinabalu and Mount Tahan in Malaysia, and Mount Puncak Jaya in Papua Island