11th Class FSc Part 1 Chemistry Chapter Wise Online MCQ Test With Answer PDF

Chemistry Fsc Part 1 Online Test

Sr. #	Questions	Answers Choice
1	Colligative properites are the properties of	Dilute solutions which behave as nearly ideal solution Concentrated solution which behave as nearly non-ideal solution Both a and b Neither a nor b
2	The molal boiling point constant is the ration of the elevation in boiling point to	Molarity Molality Mole fraction of solvent Mole fraction of solute
3	Two solution of NaCI and KCI are prepared separately by dissolving same moles of them in the fixed amount of solvent. Which of the following statements is true for these solution	KCI solution will have higher boiling point than NaCI solution Both the solutions have different boiling point KCI and NaCI solution possess same vapour pressure KCI solution possesses lower freezing point than NaCI solution
4	Which of the following solutions has the highest boiling point	5.85% solution of sodium chloride 18.0% solution of glucose 6.0% solution of urea All have the same boiling points
5	In azeotropic mixture showing positive deviation from Raoult's law the volume of the mixture is	Slightly more than the total volume of the components Slightly less than the total volume of the components Equal to the total volume of the components None of these
6	Azeotrpic mixture of two liquids boils at a lower temperature than either of them, when	It is saturated Is shows positive deviation from Raoult's law It shows negative deviation from Raoult's law Is is metastable
7	An aqueous solution of ethanol in water has vapour pressure	Equal to that water Equal to that of ethanol More than that of H<sub>2</sub>O less than that of water
8	A solution of glucose is 10% to volume in which 1 g mole of it is dissolved will be	1 dm<sup>3</sup> 1.8 dm<sup>3</sup> 200 cm<sup>3</sup> 900 cm<sup>3</sup>
9	18 g of glucose is dissolved in 90 g of water. The relative lowering of vapour pressure is equal to	1/5 5.1 1/51 6
10	Molarity of pure water is	1 18 55.5 6
11	The pK_avalue of CH₃COOH is 4.74 when we mix CH₃COOH and CH₃COONa in the ratio of 10:1, tehn the pH of the buffer is	4.74 5.74 3.74 7.00
12	The number of moles of acid or base required by one dm³of buffer to alter its pH by one unit is called	Buffer efficiency Buffer capacity Buffer action None
13	A buffer solution can be prepared by mixing	Weak acid and its salt with weak base Weak base and its salt with strong acid Strong acid and its salts with weak base Strong base and its salt with weak acid
14	The value of pH and P^oHof pure water at 25° C is	14 7 1 x 10<sup>-14</sup> 1 x 10<sup>14</sup>
15	The pH of human blood is	7.0 7.4 4.0 6.5
16	K_aand K_bof a conjugate acid and are related with k_was	K<sub>a </sub>+ K<sub>b</sub>=K<sub>w</sub> K<sub>a</sub>-K<sub>b</sub>=K<sub>w</sub> K<sub>a </sub>.<sub></sub>K<sub>b</sub>= K<sub>w</sub> K<sub>a</sub>/ K<sub>b</sub>= K<sub>w</sub>
17	The effect of temperature on equilibrium was studied by	Lewis Van der wall Arrhenius Vant hoff

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