Submitted by examrobotsa on Thu, 01/01/1970 - 05:30 Arrange the following substances in their order of increasing hardness: 1. Gypsum 2. Topaz 3. Fluorite 4. Feldspar Select the correct answer using the code given below:4-3-2-1 1-3-4-23-4-2-11-4-3-2stats: 0,160,552,200,248,104,160