PPSC Chemistry Full Book Test With Answers

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PPSC Chemistry Full Book Test

Sr. # Questions Answers Choice
1 In terms of number of phases (p) components (C) and degree of freedom (F) the phase rule is expressed as. P + C = F + 2 F = P+ C - 2 P + F= C + 2 P - F = C = 2
2 The number of phases of mixtures of four gases enclosed in a container is 1 4 4-1 zero
3 30 mL of an acid solution is neutralized by 15 mL of 0.2 N base. The strength of acid solution is. 0.1 N 0.15 N 0.3 N 0.4 N
4 The normality of 2.3 M H2SO4 solution is. 0.46 N 0.23 N 2.3 N 4.6 N
5 Which of the following solution has highest normality. 1 N H2PO4 0.5 N H2SO4 6 g NaOH per 100 cm3 4 g NaOH PER 1000 cm3
6 Which of the following expression is correct. C = n/RT C = RT/n RT = Cn Cn = 1/RT
7 At the some temperature 0.1 M solution of urea is isotonic with. 0.1 M glucose solution 0.1 M NaCl solution 0.1 M urea solution 0.1 M BaCl2 solution
8 Sea water is converted into fresh water bases upon the phenomenon of. Plasmolysis Sedimentation Diffusion Osmosis Reverse osmosis
9 The flow of solvent into a solution when two are separated by a semi -permeable membrane is called. Mixing Effusion Diffusion Osmosis
10 Which of the following solution would have the largest depression in freezing point. 1% glucose 1 % KCl 1 % AlCl3 1 % BaCl2
11 Which of the following solution would exhibit abnormal colligative proportions. 0.1 M NaCl 0.1 M urea 0.1 M sucrose 0.1 M glucose
12 The osmotic pressure of a solution with definite composition. Varies directly as the volume and temperature. Various inversely as the temperature. Varies inversely as the volume and directly as the temperature. None of the above
13 The relative lowering of vapour pressure of a solution on the addition of non -volatile solute. Is equal to the mole fraction of solute Is equal to the sum of the mole fraction of the solute and solvent Depends upon the nature of the solute Depends upon the mole fraction of the solvent
14 Iso-osmotic solutions are those which have the same. Vapour pressure lowering Osmotic pressure Molality Boiling point elevation
15 The freezing point of a solvent Will increase on adding a solute Will decrease on adding a solute Will note change on adding solute None of the above
16 The temperature at which the vapour pressure becomes equal to external pressure is called. Saturation point Critical temperature Consolute temperature Boiling point
17 Which of the following properties does not depend upon the numeb rof solute particles. Elevation in B.P. Osmotic pressure Depression in F.P. Boiling point of the solvent
18 Which of the following is not a colligative property. Elevation of B.P. Depresaion in F.P Viscosity Osmotic pressure
19 For dilute solutions colligative properties depend on. The number of the particles of the solute and nature of solvent. The number of the solute particles and on their nature The number of the solute particles and nature of solute and solvent The number of the solute particles and irrespective of the nature of the solute and solvent.
20 According to Henry's Law. the mole fraction of a gas (x) dissolved in a solvent is related to the pressure of the gas. x = k/p x = p/k x = k p = k/x
21 The law which relates the solubility of a gas to its pressure is called. Raoult's law Nernst law Ostwald's law Hennery's law
22 The temperature at which two conjugate solutions change into one homogeneous solution is called. Azeotrope Conjugate temperature Consolute temperature Transition temperature
23 Which of the following system has low as well as upper consolute temperature. Nicotine - water Aniline -water Triethlylamine -water Phenol -water
24 Which of the following is not correct criteria for an idea solution. Enthalpyh of mixing = 0 Volume of mixing = 0 Free energy of mixing = 0 Obeys Reoult's law
25 Solution with components which obeys Raoult's over the entire composition range are said to be. Real solution Regular solutions Dilute solutions Ideal Solution
26 Which of the following solutions of sulphuric acid will exactly neutralize 25 mL. of 0.2 M NaOH 12.5 mL of 0.1 M solution 24 mL OF 0.1 m Solution 50 mL of 0.1 M solution None of the above
27 The molarity of a 500 mL solution containing 4 g NaOH 0.1 0.2 0.3 0.4
28 How much amount of NaOH is required to prepare 100 mL of 1 N solution. 80 g 4 g 40 g zero
29 One ppm solution of NaOH Contain 1000 mg of the solute per how much of the volume of the solution. 1000 mL 100 mL 10 mL 1 mL
30 The number of formula weight of the solute dissolved per dm3 of the solution is called. Mole fraction Normality Formality Molaiity
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