[{"id":174730,"question":"The substances formed during the chemical reaction are called.","choices":[{"text":"Product","value":"A"},{"text":"Reactants","value":"B"},{"text":"Radicals","value":"C"},{"text":"Element","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":174729,"question":"The substance formed during the chemical reaction are called.","choices":[{"text":"Products","value":"A"},{"text":"Reactants","value":"B"},{"text":"Radical","value":"C"},{"text":"Element","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":174728,"question":"For which reaction Kf is the rate constant?","choices":[{"text":"Forward reaction","value":"A"},{"text":"Backward reaction","value":"B"},{"text":"Upward reaction","value":"C"},{"text":"Downward reaction","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":174727,"question":"When CaCO<sub>3,</sub>.is heated in an open flask, it decomposes to form calcium oxides and .","choices":[{"text":"O<sub>2</sub>","value":"A"},{"text":"CO","value":"B"},{"text":"CO<sub>2</sub>","value":"C"},{"text":"CO<sub>3</sub>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":174726,"question":"A dynamic equilibrium","choices":[{"text":"Reaction stops to proceed","value":"A"},{"text":"Amounts of reactants and products are equal","value":"B"},{"text":"Rate of forward and reverse reaction are equl","value":"C"},{"text":"Reaction can no longer be reversed.","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":174725,"question":"A complete reaction is one is which.","choices":[{"text":"All the reactants convert into products.","value":"A"},{"text":"All the reactants do not convert into products.","value":"B"},{"text":"Half reactants convert into products.","value":"C"},{"text":"Only 10% reactants convert into products.","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":174724,"question":"At equilibrium state there are possibilities: OR types of chemical equilibrium are.","choices":[{"text":"1","value":"A"},{"text":"2","value":"B"},{"text":"3","value":"C"},{"text":"4","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":174723,"question":"when a system is in equilibrium state or in dynamic equilibrium state.","choices":[{"text":"Reactants and product are equal","value":"A"},{"text":"Forward reactions stops","value":"B"},{"text":"Reverse reactions stops","value":"C"},{"text":"Forward reaction rate and reverse reaction rate","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":174722,"question":"A reverse reaction is that.","choices":[{"text":"Which proceed from left to high","value":"A"},{"text":"In which reactants reacts to form products","value":"B"},{"text":"Which slow down gradually","value":"C"},{"text":"Which speed up gradually","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":174721,"question":"The reactions in which products can recombine to form reactants is called.","choices":[{"text":"Irreversible reactions","value":"A"},{"text":"Reversible reactions","value":"B"},{"text":"Direct reactions","value":"C"},{"text":"Indirect reactions","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":174720,"question":"The dynamic equilibrium in irreversible reaction.","choices":[{"text":"Never establishes","value":"A"},{"text":"Establishes after completion of reaction","value":"B"},{"text":"Establishes before completion of reaction","value":"C"},{"text":"Establishes very soon","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":174719,"question":"The rate of reverse reaction in the beginning.","choices":[{"text":"Slow","value":"A"},{"text":"moderate","value":"B"},{"text":"Very fast","value":"C"},{"text":"Low","value":"D"},{"value":"E"}],"correctAnswer":1}]