Chemistry thinking qns?

Question

milk powder and NaOH in a test tube.

on heating, the milk powder reacts with NaOH to form a gas which turns moist red litmus blue. From the obeservation alone, we can infer thta the milk powder contains the element

A) carbon

B)hydrogen

C)nitrogen

D)suplhur

i know that it's either C or D but which one?

P.S writing the reason for your choice=)

Answer 1

The litmus turning blue indicates NH3 therefore N is present.

c. Nitrogen