Physics - Heat & Thermo Question with Solution | TestHub
Hydrogen gas is kept in a conducting container fitted with a piston. Many processes can be carried out on the gas. Match the possible outcome of each of the processes on the gas in the container.
List - I | List - II |
(I) Some gas is slowly removed from the container keeping piston free. | (P) The pressure of the gas increases |
(II) The gas is heated keeping the piston fixed | (Q) The volume of the gas increases |
(III) The container is heated keeping the piston free | (R) The pressure of the gas decreases |
(IV) The container is taken to a place where acceleration due to gravity is half of that on the earth but the temperature and pressure of the surroundings is the same. Piston is free. | (S) The volume of the gas decreases |
| (T) The temperature of the gas is the same as before. |
Options:
Answer:
Solution:
Printed mapping: (A) S,T (B) P (C) Q (D) Q,R,T. (A) piston free with gas removed slowly: pressure stays equal to outside, temperature same, volume decreases. (B) fixed piston heated: pressure increases at constant volume. (C) free piston heated: volume increases at constant pressure. (D) lower g: less weight on piston, so gas expands at same temperature and final pressure; volume increases, and during the expansion pressure first decreases, so Q, R, T.
