Stoichiometry One Newton is equal to __________ dynes. 10³ 10² 10⁵ 10⁴ 10³ 10² 10⁵ 10⁴ 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 Temperature & pressure State of aggregation & the state of combination at the beginning & the end of the reaction None of these Number of intermediate chemical reactions involved Temperature & pressure State of aggregation & the state of combination at the beginning & the end of the reaction None of these Number of intermediate chemical reactions involved ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16) 485 350 345 140 485 350 345 140 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour? 10 20 5 15 10 20 5 15 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry If 1.5 moles of oxygen combines with aluminium to form Al2O₃, then the weight of aluminium (atomic weight = 27 ) used in this reaction is __________ gm. 54 2.7 5.4 27 54 2.7 5.4 27 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Real gases approach ideal behaviour at Low pressure & low temperature Low pressure & high temperature High pressure & high temperature High pressure & low temperature Low pressure & low temperature Low pressure & high temperature High pressure & high temperature High pressure & low temperature ANSWER DOWNLOAD EXAMIANS APP
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