
IIT JEE : Heat And Thermodynamics QUESTIONS AND ANSWERS :: part1 : 21 to 25
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
21.The molecular weight of gas is 44. The volume occupied by 2.2 g of this gas at 0 degreeCentigrade and 2 atm pressure, will be: |
| 0.56 L |
| 1.2 L |
| 2.4 L |
| 5.6 L |
22.If mass-energy equivalence is taken into account, when water is cooled to form ice, the mass of water should: |
| increase |
| remain unchanged |
| decrease |
| first increase then decrease |
23.Which statement is incorrect? |
| All reversible cycles have same efficiency |
| Reversible cycle has more efficiency than an irreversible one |
| Carnot cycle is a reversible one |
| Carnot cycle has the maximum efficiency in all cycles |
24.A block of mass 100 g slides on a rough horizontal surface. If the speed of the block decreases from 10 m/s to 5 m/s the thermal energy developed in the process is: |
| 3.75 J |
| 37.5 J |
| 0.375 J |
| 0.75 J |
25.The process in which the heat is not transferred from one state to another, is: |
| isothermal process |
| adiabatic process |
| isobaric process |
| isochoric process |
More Heat And Thermodynamics QUESTIONS AND ANSWERS available in next pages
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