1 Gas pressure is due to: A Weight of gas B Collisions of gas particles C Volume of gas D Temperature only
3 Which surface is a good emitter of heat? A Shiny surface B Polished surface C Black surface D White surface
4 During evaporation, average kinetic energy of remaining liquid: A Increases B Decreases C Remains same D Becomes zero
9 Latent heat is the heat required to: A Raise temperature B Change state without temperature change C Increase pressure D Expand volume
10 Heat flow in geothermal systems occurs mainly by: A Conduction B Convection C Radiation D Evaporation
11 Which gas is mainly responsible for greenhouse effect? A Oxygen B Nitrogen C Carbon dioxide D Hydrogen
13 Which region of Earth is the main source of geothermal heat? A Crust B Mantle C Atmosphere D Hydrosphere
15 Superconductors show zero resistance below: A Room temperature B Boiling point C Critical temperature D Melting point
17 At constant volume, pressure of a gas is directly proportional to: A Mass B Density C Temperature D Area
18 High specific heat capacity of water helps in: A Rapid heating B Climate moderation C Fast cooling D Heat insulation
19 Greenhouse effect causes: A Cooling of Earth B Constant temperature C Increase in Earth’s temperature D Decrease in solar radiation