Hi Madhukia! Welcome to the forum! Somebody else will probably be by that can help you more, but I checked out www.onlineconversion.com (a very handy site with all sorts of conversions), and I see that your 25 centigrade is about 75F. That's pretty average-warm. One of my favorites that would fit well in this climate would probably be a croton-many different varieties, great colored foliage. Spider plants and cacti are always good, african violets if you want to take a stab at getting them to bloom. Like I said, I don't know of too many varieties, but these should get you started, and I'm sure someone else will come along with more info for you. Good luck!

Oman may be an arid country, but that will have little bearing on your selection of indoor plants. Most commonly-used indoor plants do just fine in very low humidity. Indoor plants are also mostly from tropical regions where warm temps are the norm.

So your primary consideration should be matching plants with available light. A Croton is a brilliantly colored plant, but it requires abundant direct sun to maintain its color. Other common houseplants must be protected from direct sunlight.