Question

1 point Read the following paragraph and answer Q12 to Q15. Since ages. matchsticks are in use. Long ago. Egyptians used small pieces of pinewood dipped in sulphur as matches. These days matchsticks are lot safer. Modern matchsticks are made up with mixture of antimony trisulphide and potassium chlorate with some glue and starch applied on the head of the match. The rubbing surface has powdered glass and some red phosphorous. On striking match against rough surface, red phosphorous gets converted into white phosphorous and it reacts with potassium chlorate to ignite antimony trisulphide and so the combustion takes place. 12. Which of the following is a combustible substance? O A) Pine wood O B) Powdered glass O C) Starch OD) Sand​

Answer 1

Answer:

O C)starch zfsgjsndhdhdmxj