Multiple choice

Which of the following is produced when at high temperature, sodium meta phosphate combines with coloured oxide?

  1. Blue mixed salt

  2. Potassium hypophosphite salt

  3. Microcosmic salt

  4. Sodium thiosulphate

  5. None of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This option is correct because at high temperature, sodium metaphosphate combines with coloured metal oxide (cuperous oxide) to give sodium cupric phosphate.