No, pineapple does not naturally contain caffeine.
No. It contains pineapple.
Skim milk does contain Lipids.
Yes, grits contain a small amount of lipids.
lipids do not contain proteins
Yes ice cream does contain lipids. Lipids are any fats, waxes or oils. Ice cream contains fat, there for ice cream does in fact contain lipids.
Lipids haven't nitrogen.
No, it does not contain starch.
Try http://www.nutritiondata.com/ and search for pineapple.
Sugar water does NOT contain lipids!Unless it is not just sugar water.
Lipids contain oxygen and phosphorus, but not nitrogen. Nitrogen is typically found in proteins and nucleic acids, rather than lipids.
Lipids also contain carbon and hydrogen.