Question

You are asked to prepare oxygen from air after eliminating the impurities in the order that is at first dust particles then water vapour and `CO_(2)` at the end. Based on the given instruction arrange the processes given below in a sequence.
(a) Passing the sample of air through concentrated NaOH
(b) Repeated compression followed by sudden expansion
(c) Fractional distillation of liquefied air
(d) Passing the air through electrostatic precipitator
(e) Passing the air through anhydrous `CaCl_(2)`
A. a d e b c
B. a c e b d
C. d e a b c
D. b a e d c

Answer 1

(i) Passing the air through electrostatic precipitator.
(ii) Passing the air through anhydrous `CaCl_(2)`.
(iii) Passing the air through concentrated NaOH solution .
(iv) Repeated compression followed by sudden expansion.
(v) Frational distillation of liquefied air.