A napthelene hemisphere is placed on a glass plate and a napthelene ball of identical diameter is kept suspended in the stagnant air in two large rooms. The respective shapes of the ball are maintained while they sublime and reduce in size. Which of the following statements are true in this connection?

They take the same time for complete sublimation

The hemisphere disappears first

A napthelene hemisphere is placed on a glass plate and a napthelene ba

1.	A napthelene hemisphere is placed on a glass plate and a napthelene ball of identical diameter is kept suspended in the stagnant air in two large rooms. The respective shapes of the ball are maintained while they sublime and reduce in size. Which of the following statements are true in this connection?
A.	They take the same time for complete sublimation
B.	The sphere disappears first
C.	The hemisphere disappears first
D.	Nothing definite can be said
Answer» B. The sphere disappears first

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