SINDH MDCAT 2019 CHEMISTRY#Hess's Law#Thermochemistry & Thermodynamics26Choose the best answerThe net heat change in a chemical reaction is same, whether it is brought about in two or more different ways in one or several steps. It is known as: (Sindh MDCAT 2019)AHenry's lawBHess's lawCJoule's principleDDalton's law Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Alkynes#Chemistry of Hydrocarbons27Choose the best answerWhich of the following gases is used for welding purposes? (Sindh MDCAT 2019)AetheneBethaneCpropaneDethyne Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Chemistry of Hydrocarbons#Reforming28Choose the best answer50. Name the main product formed in the reaction CH₃-(CH₂)₅–CH₃ + [ 480-550°C, 150-300 Psi, V₂O₅ ] ──>ABenzeneBTolueneCXyleneDCyclohexane Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Effusion#Gases29Choose the best answerEffusion of gases take place through a hole with: (Sindh MDCAT 2019)AHole dimensionsBInfinite dimensionsCSlit like dimensionsDMolecular dimensions Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Aqua Regia#S- and P-Block Elements30Choose the best answerWhat are the products of the below mentioned equation (HNO₃ + 3HCl →): (Sindh MDCAT 2019)A2H₂O + NOCl + Cl₂BH₂ + NOCl + 2HOClCH₂O + NO₂Cl + 2HClD2H₂O + NOCl + 2Cl Like 0 Discuss 0Share