Which of the following gases is heavier than oxygen?
Carbon dioxide
Carbon dioxide is heavier than oxygen, as it has a higher molecular weight.
Bubble of air rise up through liquids due to:
The boiling point of liquids vary as
A liquid is heated up to a certain temperature. Which one of the following situation would correspond to the boiling of the liquid?
Which one among the following oxides has the highest melting point?
Equal volume of all gases, when measured at the same temperature and pressure, contain an equal number of particles. Who proposed the above law?
Match List I with List II and select the correct answer using the code given below the Lists:
List I (Noble gas) | List II (Use) |
A. Argon | 1. In lights for advertising display |
B. Neon | 2. Airport landing lights and in light houses |
C. Krypton | 3. Light in photographer’s flash gun |
D. Xenon | 4. In tungsten filament to last |
Match List-I with List-II and select the correct answer using the code given below the Lists:
List I (Process) | List II (Type of change) |
A. Heating of camphor | 1. Chemical |
B. Cooling of water vapor up to room temperature | 2. Evaporation |
C. Cooking an egg | 3. Condensation |
D. Formation of water vapor at room temperature. | 4. Sublimation |