Question

Which of the following processes will quadruple the pressure

a) Reduce V to half and double T

b) Reduce V to 1/8th and reduce T to half

c) Double V and half T

d) Increase both V and T to double the values

• A. b,c
• B. a,b
• C. c,d
• D. a,d.

Answer 1

The correct option is B a,b

(a) First we half the volume at constant T pressure will become double now we double our temperature keeping volume same it will again double the pressure and finally pressure will become quadruple.
(b)When we make volume V/8 keeping temperature constant pressure becomes 8 times now when we half the temperature pressure also gets halved and become 4 times
(c)When we double V and half T pressure will become 1/4 times
(d) if we increase both V and T to double then pressure will not change.
Therefore only (a) & (b) are correct
Therefore option(B) is correct