CBSE HELP TESTS NOTESSHRI SAI MASTERS TUITION CENTER …

What is baking soda and what does it do during baking? What is a “halogen” light? What is “Milk of Magnesia” and what does it do for indigestion? What makes up a ruby or a sapphire? What causes the different colors of these gemstones? What are some of the different forms that SiO2 (quartz) can take? What is asbestos and how does it work? ................
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