An early match-head mixture described in NCERT’s account of match development contained which of the following substances?

Explanation

The historical match-head mixture described in NCERT includes antimony trisulphide, potassium chlorate and white phosphorus, so all three listed ingredients belong to that account. It describes an early phosphorus-containing match mixture. Conventional modern safety matches separate red phosphorus onto the striking surface and do not use white phosphorus in the same way.