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8. Which of the following statements is incorrect? a. In the synthesis of alizarin, the starting material is anthraquinone. b. The chemical in indigo which is responsible for the blue color is indigotin. c. Methyl orange can be prepared after undergoing 4 steps. d. Malachite green is a type of diphenylmethane dye. 9. Which of thc following true about soap? a. Soap is a good cleaning agent, it's mostly effective when used in hard water. b. The carboxylate end of the soap molecule is attracted to water, it is called hydrophobic. c. The hydrocarbon chain is attracted to oil and grease. d. Sodium soaps are softer and are found in some liquid hand soaps and shaving creams. 10. Which among the following statements is incorrect? a. Detergents usually irritate the skin. b. Detergents have faster dissolving speed in the water. c. Soaps are entirely biodegradable. d. Soaps are best suited for cleaning body parts.
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