Stoichiometry In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water? (atomic weight of calcium = 40) 1120 4480 2240 0.4 1120 4480 2240 0.4 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The crystallisation of a solute from a solution may be done by Change of temperature thereby causing supersaturation Changing the nature of the system by the addition of a more soluble material All of these Removal of pure solvent by evaporation Change of temperature thereby causing supersaturation Changing the nature of the system by the addition of a more soluble material All of these Removal of pure solvent by evaporation ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Viscosity of atmospheric air may be about __________ centipoise. 15 150 1.5 0.015 15 150 1.5 0.015 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is 0.5 1.72 0.58 0.2 0.5 1.72 0.58 0.2 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is Termed as relative saturation Not a function of the composition of gas mixture Called percentage saturation Not a function of the nature of vapor Termed as relative saturation Not a function of the composition of gas mixture Called percentage saturation Not a function of the nature of vapor ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The heat of adsorption of a gas caused by Van der Walls forces of attraction and capillarity is equal to the heat of Normal condensation Difference of A and B Sum of A and B Wetting Normal condensation Difference of A and B Sum of A and B Wetting ANSWER DOWNLOAD EXAMIANS APP
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