[CPMT 1979; AIIMS 1980; DPMT 1982; Kurukshetra CEE 1998; J & K CET 2005; DPMT 2002]
A) $ HF $
B) $ HCl $
C) $ HBr $
D) $ HI $
Correct Answer: B
| Hydride - | HF | HCl | HBr | HI |
|---|---|---|---|---|
| B.pt (in K) - | 293 | 189 | 206 | 238 |
Because of its low b.p. HCl is more volatile.
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