When potassium reacts with cold water then hydrogen gas burns with a:-

Pale blue flame

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Lilac coloured flame

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Golden yellow flame

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Green flame

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
Lilac coloured flame

Pure hydrogen gas burns with a pale blue flame but when potassium reacts with cold water then hydrogen gas burns with a lilac coloured flame because of the presence of vapours of potassium.

Suggest Corrections

Similar questions

When potassium reacts with cold water then hydrogen gas burns with a _____ coloured flame.

Sodium reacts with cold water to form a compound that burns with a flame. Guess the colour of flame.

Join BYJU'S Learning Program