ssc je mechanical II Thermodynamics MCQ Practice IIssc je mechanical previous year paper
| 1. Absolute temperature of 77K = ..........., approximately. (a) -196°C (b) 350°C (c) 77°F (d) None of these |
| Ans. (a) |
| 2. A thermometer reads 73.5°C and the correction from calibration curve is -0.35 °C in the measurement range of 70°C to 90°C. What is the true value of the temperature? |
(c) 70.35°C (d) 90.85°C
| Ans. (b) |
| 3. The equilibrium state of a substance which co exists in solid, liquid and vapour, form at a single point is called |
| (a) Critical point (b) Saturation point (c) Triple point (d) None of these |
| Ans. (c) |
| 4. When the state is being changed from gas to liquid through the process of condensation, the temperature? (a) increases (b) decreases (c) remains constant (d) may increase or decrease |
| Ans. (c) |
| 5. What is SI unit of Temperature? (a) Fahrenheit (b) Centigrade (c) Kelvin (d) Rankine
(c) Second (d) Third |
| Ans. (b) |
| 7. Zeroth law of thermodynamics states that (a) two thermodynamic system are always in thermal equilibrium with each other (b) if two systems are in thermal equilibrium, then the third system will also be in thermal equilibrium (c) two system not in thermal equilibrium with a third system will also not in thermal equilibrium with each other (d) when two systems are in thermal equilibrium with a third system, they are in thermal equilibrium with each other |
| Ans : (d) |
| 8. The thermoelectric effect was first observed by.............. |
(a) Seebeck (b) Pirani
(c) Thermas (d) Thomas young
| Ans : (a) |
| 9. Thermocouples are used for measuring which of the following parameter? (a) Humidity (b) Pressure (c) Temperature (d) Density |
| Ans : (c) |
10. The temperature of a gas is a measure of ____.
(a) Average distance between gas molecules
(b) Average kinetic energy of gas molecules
(c) Average potential energy of gas molecules
(d) None of these
| Ans : (b) |