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Chemistry GK · Q9

State of Matter

Competitive Exams · Chemistry GK · question 9

Q9

Sodium vapour lamps glow with yellow colour. This is due to

A.
sublimation of sodium to emit yellow colour
B.
the emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum
Answer
C.
the low ionisation energy of sodium
D.
its ability to absorb all other colours except yellow

Answer: Option B

Solution

Answer: Option B
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