21. Amount of water vapour (gaseous) in a given volume of air (cubic metre) is known a
22. In Thermodynamic, Zero Law states that-
23. In a refrigerator, what produce the cooling?
24. Which color is inside the solar cooker?
25. The heat conduction in a cubic object does not depend on-
26. The four storke petrol engine is based on
27. Ocean currents are an example of
28. On a specific day and time, the temperature was 48°C in Churu and 24°C in Shimla. Two metallic cups identical in all respects contained water at 95°C in Churu and 71°C in Shimla. Which one of these two cups reached room temperature first?
29. Which of the following a bad conductor of heat?
30. Cloudy nights are warmer compared nights because clouds mainly
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