[{"id":1066424,"question":"A substance that changes color with pH is a","choices":[{"text":"Orange ","value":"A"},{"text":"Red","value":"B"},{"text":"Yellow","value":"C"},{"text":"Blue","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066423,"question":"A salt that hydrolyzes in water in from","choices":[{"text":"Strong acid and base","value":"A"},{"text":"Weak acid or base","value":"B"},{"text":"None ","value":"C"},{"text":"Both strong","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066422,"question":"CH3COONA is a salt of.","choices":[{"text":"Strong acid+ Strong base","value":"A"},{"text":"Weak acid+Strong base","value":"B"},{"text":"None","value":"C"},{"text":"Weak base+Weak acid","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066421,"question":"A salt from stron acid+weak base gives.","choices":[{"text":"Neutral solution ","value":"A"},{"text":"Acidic solution ","value":"B"},{"text":"Precipitate","value":"C"},{"text":"Basic solution ","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066420,"question":"Which one of the following is not the applicatio of solubility products.","choices":[{"text":"Determination of solubility from Ksp","value":"A"},{"text":"Common ion effect","value":"B"},{"text":"Predicting precipitation","value":"C"},{"text":"Dissociation of bonds","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":1066419,"question":"The pKa value for HCOOH is.","choices":[{"text":"4.74","value":"A"},{"text":"3.78","value":"B"},{"text":"4.78","value":"C"},{"text":"4.24","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066418,"question":"A buffer solution is.","choices":[{"text":"Stron acid+ strong base","value":"A"},{"text":"Weak Acid + Its salt","value":"B"},{"text":"Weak base + Its salt","value":"C"},{"text":"Weak base+ salt of strong acid","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":1066417,"question":"The suppression of ionization of a weak electrolyte by adding common ion is","choices":[{"text":"Le-Chatelier's effect","value":"A"},{"text":"Common ion effect","value":"B"},{"text":"Auf Bau effect","value":"C"},{"text":"Hund's rule","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066416,"question":"Which one of the following compound is added in purficatio of NaCl in common ion efffect.","choices":[{"text":"HCl","value":"A"},{"text":"H2SO4","value":"B"},{"text":"HNO3","value":"C"},{"text":"HF","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066415,"question":"The Ka of a weak acid is 10-5 its pKa is","choices":[{"text":"2","value":"A"},{"text":"3","value":"B"},{"text":"5","value":"C"},{"text":"10","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066414,"question":"Which is a weak acid","choices":[{"text":"HNO3","value":"A"},{"text":"H2SO4","value":"B"},{"text":"HF","value":"C"},{"text":"HCl","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066413,"question":"Strong bases have","choices":[{"text":"Low Kb","value":"A"},{"text":"High Kb","value":"B"},{"text":"Low pH","value":"C"},{"text":"High Ka","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066412,"question":"An acid with low Ka value is.","choices":[{"text":"Strong","value":"A"},{"text":"Weak","value":"B"},{"text":"Base","value":"C"},{"text":"Neutral","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066411,"question":"A base taht ionizes completely in aqueous solution is called.","choices":[{"text":"Strong base","value":"A"},{"text":"Weak base","value":"B"},{"text":"Conjugate acid","value":"C"},{"text":"Neutral","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066410,"question":"The sgtrength of base is measured by its.","choices":[{"text":"Ka","value":"A"},{"text":"Kb","value":"B"},{"text":"Pkw","value":"C"},{"text":"Kw","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066409,"question":"If Ka of acetic acid is 1.8 X 10<sup>-5</sup>, IT IS","choices":[{"text":"Strong acid","value":"A"},{"text":"Base","value":"B"},{"text":"Weak acid","value":"C"},{"text":"Neutral","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066408,"question":"Which of the following is a weak base.","choices":[{"text":"KOH","value":"A"},{"text":"NaOH","value":"B"},{"text":"NH3","value":"C"},{"text":"Ca(OH)2","value":"D"},{"value":"E"}],"correctAnswer":2}]