Question

Which of the following traits of ammonia can be used for its identification?

• A. Pungent odour
• B. Turns red litmus to blue
• C. Irritating sensation in nasal passage
• D. Turns methyl orange from yellow to orange

Answer 1

Answer: (A), (B), (C)

The correct options are
A Pungent odour
B Turns red litmus to blue
C Irritating sensation in nasal passage

$\bullet$ Ammonia is a colourless gas having a strong pungent odour. It causes irritation in the nasal passage and brings tears to the eyes.

$\bullet$ Amonia is basic in nature. Thus, it changes the colour of moist red litmus to blue.

$\bullet$ However, methyl orange turns yellow in basic medium. Thus, ammonia turns methyl orange to yellow.