Stoichiometry The amount of Zn (atomic weight = 65) required to form 224 c.c. of H₂ at N.T.P. on treatment with dilute H₂SO₄ will be __________ gm. 6.5 0.065 65 0.65 6.5 0.065 65 0.65 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. The temperature at which the above mixture will exert a pressure of one standard atm. is Less than 100°C 100°C 110.6°C Between 100 and 110°C Less than 100°C 100°C 110.6°C Between 100 and 110°C ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry One kg of saturated steam at 100°C and 1.01325 bar is contained in a rigid walled vessel. It lias a volume of 1.673 m³. It cools to 98°C ; the saturation pressure is 0.943 bar ; one kg of water vapour under these conditions has a volume of 1.789 m³. The latent heat of condensation (kJ/kg⁻¹ ) under these conditions is 540 2676 40732 2263 540 2676 40732 2263 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Addition of a non-volatile solute to a solvent produces a __________ in its solvent. Freezing point elevation All of these Boiling point depression Vapor pressure lowering Freezing point elevation All of these Boiling point depression Vapor pressure lowering ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the Number of intermediate chemical reactions involved None of these State of aggregation & the state of combination at the beginning & the end of the reaction Temperature & pressure Number of intermediate chemical reactions involved None of these State of aggregation & the state of combination at the beginning & the end of the reaction Temperature & pressure ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m³ . The diffusivity of aniline in air is 0.74xl0-5m²/s.The numerical value of mass transfer co-efficient is 7.4 x 10-3. Its units are Mole/m².s.Pa Kmole/m².s.Pa Cm/s M/s Mole/m².s.Pa Kmole/m².s.Pa Cm/s M/s ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS