MCQOPTIONS
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| 1. |
What_colour_is_obtained_when_a_drop_of_diphenylamine_solution_in_concentrated_sulphuric_acid_is_added_to_the_sample_of_cellulose_nitrate_in_the_absence_of_other_oxidizing_agents?$ |
| A. | deep blue |
| B. | yellow |
| C. | grey |
| D. | red |
| Answer» B. yellow | |