Chemistry Fsc Part 1 Online Test With Answers

Chemistry Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1 The solubility product of AgCl is 2.0 x 10-10 mol2 dm-6. The maximum concentration of Ag+ ions in the solution is. 2.0 x 10<sup>-10</sup> mol dm<sup>-3</sup> 1.41 x 10<sup>-5</sup> mol dm<sup>-3</sup> 1.0 x 10<sup>-10</sup> mol dm<sup>-3</sup> 4.0 x 10<sup>-20</sup> mol dm<sup>-3</sup>
2 If the pH of solution is 11, what is the [OH-]concentratio in the solution. 1 x 10<sup>-3</sup> M 1 x 10<sup>-11</sup> M 1 x 10<sup>-2</sup> M 1 x 10<sup>-14 M</sup>
3 The solubility prodct of Pb SO4 is 1.6 x 10<sup>-8</sup> 1.4 x 10<sup>-4</sup> 1.6 x 10<sup>-6</sup> 1.6 x 10<sup>-2</sup>
4 In a titration, the equivalence point is when No acid left pH = 7 Moles of acid= moles of base Buffer forms
5 A substance that changes color with pH is a Orange  Red Yellow Blue
6 A salt that hydrolyzes in water in from Strong acid and base Weak acid or base None  Both strong
7 CH3COONA is a salt of. Strong acid+ Strong base Weak acid+Strong base None Weak base+Weak acid
8 A salt from stron acid+weak base gives. Neutral solution  Acidic solution  Precipitate Basic solution 
9 Which one of the following is not the applicatio of solubility products. Determination of solubility from Ksp Common ion effect Predicting precipitation Dissociation of bonds
10 The pKa value for HCOOH is. 4.74 3.78 4.78 4.24
11 A buffer solution is. Stron acid+ strong base Weak Acid + Its salt Weak base + Its salt Weak base+ salt of strong acid
12 The suppression of ionization of a weak electrolyte by adding common ion is Le-Chatelier's effect Common ion effect Auf Bau effect Hund's rule
13 Which one of the following compound is added in purficatio of NaCl in common ion efffect. HCl H2SO4 HNO3 HF
14 The Ka of a weak acid is 10-5 its pKa is 2 3 5 10
15 Which is a weak acid HNO3 H2SO4 HF HCl
16 Strong bases have Low Kb High Kb Low pH High Ka
17 An acid with low Ka value is. Strong Weak Base Neutral
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