[{"id":174718,"question":"We exhale gas in the atmosphere during respiration.","choices":[{"text":"Carbon dioxide","value":"A"},{"text":"Oxygen","value":"B"},{"text":"Nitrogen","value":"C"},{"text":"Water","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":174717,"question":"The plant use","choices":[{"text":"Carbon di oxide","value":"A"},{"text":"Oxygen","value":"B"},{"text":"Nitrogen","value":"C"},{"text":"Sulphur","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":173457,"question":"Which chemical is called king of chemicals?","choices":[{"text":"KNO<sub>3</sub>","value":"A"},{"text":"H<sub>2</sub>SO<sub>4</sub>","value":"B"},{"text":"HCl","value":"C"},{"text":"NHO<sub>3</sub>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173456,"question":" Equilibrium constant value \"K\" is equal to:","choices":[{"text":"Kt / Kr","value":"A"},{"text":"Ki / Kr","value":"B"},{"text":"Kc / Qc","value":"C"},{"text":"Qc /Kc","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":173455,"question":"The unit of molar concentration:","choices":[{"text":"mol. dm<sup>-2</sup>","value":"A"},{"text":"mol. dm<sup>-1</sup>","value":"B"},{"text":"mol. dm","value":"C"},{"text":"mol. dm<sup>-3</sup>","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":173454,"question":"The forward reaction takes place:","choices":[{"text":"Right to left","value":"A"},{"text":"Left to Right","value":"B"},{"text":"Only to right","value":"C"},{"text":"Only to left","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173452,"question":"Dynamic means, reaction is:","choices":[{"text":"In forward direction","value":"A"},{"text":"Stop","value":"B"},{"text":"In reverse direction","value":"C"},{"text":"Still continuing.","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":173450,"question":"When a reaction ceases to proceed further , it is called.","choices":[{"text":"Chemical states","value":"A"},{"text":"Static state","value":"B"},{"text":"Physical state","value":"C"},{"text":"Dynamic equilibrium state","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173447,"question":"In a chemical reaction, the substance that combine are called.","choices":[{"text":"Reactant","value":"A"},{"text":"Products","value":"B"},{"text":"Mass","value":"C"},{"text":"Material","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":173445,"question":"Which type of reactions take place in both directions?","choices":[{"text":"Decomposition reactions","value":"A"},{"text":"Irreversibel reactions","value":"B"},{"text":"Reversible reactions","value":"C"},{"text":"Addition reactions","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":173442,"question":"Which types of reaction speed up gradually?","choices":[{"text":"Irreversible reactions","value":"A"},{"text":"Reversibel reactions","value":"B"},{"text":"Forward reactions","value":"C"},{"text":"Decomposition reactions.","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":173439,"question":"Which type of reactions do not go to completion?","choices":[{"text":"Irreversible reaction","value":"A"},{"text":"Reversible reactions","value":"B"},{"text":"Addition reactions","value":"C"},{"text":"Decomposition reactions","value":"D"},{"value":"E"}],"correctAnswer":2}]