ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Mixture of alcohol and water can be separated by Solvent extraction techniques Crystallization Precipitation and filtration Fractional distillation
2 Hydrolysis of potassium acetate produces Acidic solution Neutral solution Basic solution None of these
3 Cane sugar is not soluble in benzene but soluble in water because Cane sugar is a macro molecule Cane sugar is an ionic compound Can sugar has hydrogen bonding Can sugar is an organic molecule
4 Freezing point depression is measured by Beckmann's apparatus Lands Berger's method Antifreeze apparatus All of the above
5 Zeotropic mixture Obey Henry's law Obey Raoult's law Does not obey Raoult's law Obey Dalton's law
6 Dust particles in smoke is a solution of the type Liquid is solute and solid is solvent Solid is solute and liquid is solvent Solid is solute and gas is solvent Gas is solute and solid is solvent
7 The substance which contains the water of crystallization is called Hydrated Solvated Crystal None
8 The number of moles of NH4CI dissolved in 500 cm3of its 15%, W/N solution is 1 mole 1.4 mole 2.0 mole 2.4 mole
9 A solution containing 5.8 grams acetone (CH3OCH3), 4.6 gram ethyl alcohol (C2H5OH) and 12 grams chloroform (CHl3) has mole fraction and mole percent of acetone 0.11, 10% 0.33, 33% 0.22, 22% 0.11, 33%
10 A solution consisting of 92 grams ethyl alcohol (C2H5OH) 96 grams methyl alcohol (CH3OH) 90 grams water the mole fraction and mole percent of methyl alcohol is 0.3. 30% 0.2, 30% 0.5, 30% 0.2, 20%
11 17.1 grams sucrose (C12H22O11) dissolved in 250 cm3 of solution. This has molarity 0.1 M 0.2 M 0.01 M 0.02 M
12 50 cm3of 0.05 molar nrea (N2H4CO) solution has % W/N concentration 6% 3% 0.3 % 0.6 %
13 10% aqueous solution of NaCI has molarity 1.7 M 2.7 M 0.17 M 3.7 M
14 0.1 molar glucose (C6H12O6) solution has the % W/N 1.8% 18% 0.18% 2.8%
15 The molarity of toluene solution in benzene is 0.22 if 5 grams of toluene dissolved, then mass of benzene is grams is 267 260 240 247
16 The term cryoscopy is used for Depression of freezing point Elevation in boiling poing Lowering of vapour pressure Osmotic pressure
17 The molarity of the solution containing x grams (NH4)2SO4in 500 cm3of the solution is 0.6 what is x 39.6 45.1 40.5 42.7
18 The amount of solute present in the given amount of solvent is called Molarity Molality Concentration Solubility
19 The molarity of solution containing 14.5 grams urea (N2H4CO) dissolved in 100 cm3of the solution is 1 molar 0.1 molar 0.2 molar 0.25 molar
20 What will be the molarity of solution if 103 g (NH4)2SO4is dissolved per 600 cm3of water 2.32 M 3.32 M 4.32 M 1.30 M
21 What mass of NaOH is required to prepare 2.5 dm3of 1.5 M NaOH solution 130 g 140 g 150 g 160 g
22 How many cm3of 1 M H2SO4required to neutralize 10 cm3of 1 M NaOH 2 cm<sup>3</sup> 2.5 cm<sup>3</sup> 5 cm<sup>3</sup> 10 cm<sup>3</sup>
23 The term ebullioscopy is used for Depression of freezing point Elevation in boiling point Lower of vapour pressure None of the above
24 What is the molarity of a solution containing 15.0 g urea in 500 cm3of solution 0.5 M 1 M 1.5 M 2 M
25 Precipitation will occur until the ionic product becomes Equal to K<sub>sp</sub> Lesser than K<sub>sp</sub> Greater than K<sub>sp</sub> None of these
26 If ionic product of a solution is greater than solubility product, the solution is Supersaturated Saturated Unsaturated None of these
27 If the ionic product of a solution is less than the solubility product, the solution is Supersaturated Unsaturated Ideal Saturated
28 The process in which water molecules surround solute particles is called Hydration Salvation Hydrolysis Dehydration
29 The process in which the solvent molecules are surrounded and interact with solute ions or molecules is called Solvation Hydration Hydrogenation None
30 Solution may have units Molarity Molality Mole fraction All of them
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