Stoichiometry No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules Collide without loss of energy Exert no attractive force on each other Do work equal to loss in kinetic energy Are above the inversion temperature Collide without loss of energy Exert no attractive force on each other Do work equal to loss in kinetic energy Are above the inversion temperature ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is 1/2 1/3 2/3 1/4 1/2 1/3 2/3 1/4 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The density of a gas 'X' is twice that of another gas 'Y'. If the molecular weight of gas 'Y' is 'M'; then the molecular weight of the gas 'X' will be 2M M/4 M M/2 2M M/4 M M/2 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Which of the following is not a colligative property? Osmotic pressure Depression of freezing point Lowering of vapor pressure None of these Osmotic pressure Depression of freezing point Lowering of vapor pressure None of these ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry An ideal gas can be liquified, because Its molecular size is very small Its critical temperature is more than 0°C Forces operative between its molecules are negligible It gets solidified directly without becoming liquid Its molecular size is very small Its critical temperature is more than 0°C Forces operative between its molecules are negligible It gets solidified directly without becoming liquid ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition. The attractive forces between like and unlike molecules are almost equal No component is concentrated at the surface of the solution The component molecules are non polar and are of almost equal size In the formation of solution, chemical combination/molecular association between unlike molecules takes place The attractive forces between like and unlike molecules are almost equal No component is concentrated at the surface of the solution The component molecules are non polar and are of almost equal size In the formation of solution, chemical combination/molecular association between unlike molecules takes place ANSWER DOWNLOAD EXAMIANS APP
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