A metal gives lilac colour in bunsen flame and the solution of its oxide turns red litmus paper blue. The metal is?
A
Na
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
K
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Ca
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Li
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is BK Potassium metal (K) gives lilac (pink) colour in bunsen flame. Its oxide dissolves in water to form potassium hydroxide, which is an alkali. So, the solution of its oxide turns red litmus paper blue.
K2O+H2O→2KOH
Sodium metal (Na) gives yellow flame, calcium (Ca) gives orange red flame and lithium (Li) gives red flame.