1
NEET 2018
MCQ (Single Correct Answer)
+4
-1
A sample of 0.1 g of water at 100°C and normal
pressure (1.013 × 105
N m–2) requires 54 cal
of heat energy to convert to steam at 100°C.
If the volume of the steam produced is 167.1 cc,
the change in internal energy of the sample, is
2
NEET 2018
MCQ (Single Correct Answer)
+4
-1
At what temperature will the rms speed of
oxygen molecules become just sufficient for
escaping from the Earth’s atmosphere?
(Given : Mass of oxygen molecule (m) = 2.76 × 10–26 kg, Boltzmann’s constant kB = 1.38 × 10–23 J K–1)
(Given : Mass of oxygen molecule (m) = 2.76 × 10–26 kg, Boltzmann’s constant kB = 1.38 × 10–23 J K–1)
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
The efficiency of an ideal heat engine working
between the freezing point and boiling point
of water, is
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Thermodynamic processes are indicated in the following diagram.
Match the following
Match the following
| Column-1 | Column-2 | |||
|---|---|---|---|---|
| P. | Process I | A. | Adiabatic | |
| Q. | Process II | B. | Isobaric | |
| R. | Process III | C. | Isochoric | |
| S. | Process IV | D. | Isothermal | |
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