Multiple choice

Which of the following reactions is not true according to the chemical properties of metals and non–metals?

  1. 2Ca + O2 à 2CaO

  2. S + 2H2O à S(OH)2 + H2

  3. P + HCl à no reaction

  4. S + 4HNO3 à SO2 + 4NO2 + 2H2O

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

Sulphur is a non-metal and does not react with water to form a hydroxide and hydrogen gas. This reaction is chemically incorrect.