Chemistry Fsc Part 1 Online Test With Answers

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Chemistry Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1 Colligative properties are used to determine the Freezing points Boiling point Atomic mass of an element Molar mass of solute
2 The vapour pressure of an aqueous solution of glucose is. Equal to vapour pressure of water Independent of temperature More than vapour pressure of pure water Less than vapour pressure of pure water
3 Molal boiling constant for water is 0.52 oC. If 6 g of urea is dissolved in 100 g of water, what will be its boiling point. 100.52 <sup>o</sup>C -100.52<sup>o</sup>C 100<sup>o</sup>C 99<sup>o</sup>C
4 Molal boiling point elevation depends upon Nature of solvent Natrue of solute Vapour pressure of solution None of these
5 The molal boiling point constant is the ratio of elevation of boiling point to Molarity Mole fraction of solvent Molality Mole fraction of solute
6 Solubility of which substance decreases by increasing temperature. NaNO3 KNO2 NaCl Ce2(SO4)3
7 Solubility of which substance decreases by incressing temperature. NaNO3 KNO2 NaCl Ce2(SO4)3
8 Solubility curve of CaCl26H2O shows Decrease in solubility with increase of temperature Increase in solubility with increase of temperature Discontinuous increase in solubility with temperature No effect of temperature on solubility
9 Water and Phenol are partially miscible to each other at room temperature when both liquids are mixed together which is upper layer. Water in Phenol Phenol and water Pure phenol Pure water
10 Which solution is an example of solid in gas Fog Steel smoke Air
11 Butter is solution of Liquid in liquid Solid and liquid Liquid and solid Liquid and gas
12 The temperature which partially immiscible pair of liquid leads to the formation of a single phase in called. Transition temperature Absolute temperature Consulate temperature Room temperature
13 Which pair of mixture is called ideal solution. Chlorobenzene and bromobenzene Water alcohol Water ether HCl and water
14 A negative deviation from Raoult's law in solution means, the solution has High boiling point and high vapour pressure High boiling point and low vapour pressure Low boiling point and low vapour pressure Low boiling point and high vapour pressure
15 Azeotropic mixture Obey Raoult's law Do not obey Raoult's law Boils at low temperature only Boils at high temperature only
16
Relative lowering of vapour pressure is equal to.
 Mole fraction of solute Mole fraction of solvent Mole fraction of solute and solvent Molality of solution
17 In case of non volatile solute, lowering of vapour pressure is proportional to. Mass fraction of solute Mole fraction of solvent Mole fraction of solute None of the above
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