A small quantity of solid ammonium chloride (NH4Cl) was heated gently in a test tube, the solid gradually disappears to produce two gases. Later, a white cloudy deposit was observed on the cooler part of the test tube. The ammonium chloride is said to have undergone?
A
distillation
B
sublimation
C
precipitation
D
evaporation
E
decomposition
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
Sublimation is the transition of a substance directly from the solid phase to the gas phase without passing through the intermediate liquid phase
Source: Myschool Past Questions Archive (Record #31)