MCQOPTIONS
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| 1. |
Which of the following statements is true?a. Indigo - blue is a natural dye. b. Alizarin is a synthetic dye. |
| A. | Both hue |
| B. | a true, b false |
| C. | a false, b true |
| D. | Both false |
| Answer» C. a false, b true | |