A metallic carbide on reaction with water gives a colourless gas which burns readily in air and gives a precipitate with ammonical silver nitrate solution. What is the gas evolved in reaction ?

• A

  ${\text{CH}}_4$
• B

  ${\mathrm{\text{C}}}_2{\mathrm{\text{H}}}_6$
• C

  ${\mathrm{\text{C}}}_2{\mathrm{\text{H}}}_4$
• Correct answer
  D

  ${\text{C}}_2{\text{H}}_2$

Hence, the correct answer is option: 'D'.