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1. |
The head of a matchstick contains a mixture of antimony trisulphide, potassium chlorate, starch, and some glue. For combustion, it is struck against a rough surface made of powdered glass and red phosphorus. Which of the following substances will be the first to get ignited when the match is struck against a rough surface? |
A. | Antimony trisulphide |
B. | Potassium chlorate |
C. | amino acid composition |
D. | Powdered glass |
Answer» D. Powdered glass | |