Solutions Quiz-12
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IIT JEE exam which consists of JEE Main and JEE Advanced is one of the most important entrance exams for engineering aspirants. The exam is held for candidates who are aspiring to pursue a career in the field of engineering and technical studies.
Chemistry is important because everything you do is chemistry! Even your body is made of chemicals. Chemical reactions occur when you breathe, eat, or just sit there reading. All matter is made of chemicals, so the importance of chemistry is that it's the study of everything..
This section contain(s) 10 questions numbered 1 to 10. Each question contains STATEMENT 1(Assertion) and STATEMENT 2(Reason). Each question has the 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct..
Q1. Statement 1: The mass of acetic acid molecule in benzene is more than the actual value of the solute.
Statement 2: Molecules of acetic acid dimerise in benzene due to hydrogen bonding.
Q1. Statement 1: The mass of acetic acid molecule in benzene is more than the actual value of the solute.
Statement 2: Molecules of acetic acid dimerise in benzene due to hydrogen bonding.
Solution
Q2. Statement 1: Henry’s law and Raoult’s law are not independent, i.e., one can be derived from the other
Statement 2: The partial pressure is directly proportional to the mole fraction of the concerned species for ideal solutions
Statement 2: The partial pressure is directly proportional to the mole fraction of the concerned species for ideal solutions
Q3. Statement 1: The osmotic pressure of 0.1 M urea solution is less than 0.1 M NaCl solution
Statement 2: Osmotic pressure is not a colligative property
Statement 2: Osmotic pressure is not a colligative property
Solution
Q4. Statement 1: van’t Hoff factor for electrolytes is always more than unity.
Statement 2: The number of particles increases in solution due to electrolytic dissociation.
Solution
Q5.Statement 1: Non-ideal solutions form a azeotropic mixture
Statement 2: The boiling point of an azeotropic mixture is only higher than boiling points of both components
Statement 2: The boiling point of an azeotropic mixture is only higher than boiling points of both components
Solution
Q6. Statement 1: Ebulliscopy or cryoscopy cannot be used for the determination of mol. wt. of polymers.
Statement 2: High molecular weight solute leads to very low value of ∆Tb or ∆Tf.
Statement 2: High molecular weight solute leads to very low value of ∆Tb or ∆Tf.
Solution
Q7. Statement 1: Near the freezing point of an aqueous solution of a non-volatile solute only ice separates out.
Statement 2: The remaining solution shows equilibrium between solid solvent-liquid solvent.
Statement 2: The remaining solution shows equilibrium between solid solvent-liquid solvent.
Solution
Q8. Statement 1: Vapour pressure of 0.5 M sugar solution is more than 0.5 M KCl solution
Statement 2: The lowering of vapour pressure is directly proportional to the number of species present in the solution
Statement 2: The lowering of vapour pressure is directly proportional to the number of species present in the solution
Solution
Q9.Statement 1: On adding NaCl to water its vapour pressure increase
Statement 2: Addition of non-volatile solute decreases the vapour pressure
Statement 2: Addition of non-volatile solute decreases the vapour pressure
Solution
Q10.Statement 1: Osmotic pressure of non-aqueous solutions can be determined by Berkeley-Hartley method.
Statement 2: The semipermeable membrane used in Berkeley-Harley method is Cu2 [Fe(CN)6 ].
Statement 2: The semipermeable membrane used in Berkeley-Harley method is Cu2 [Fe(CN)6 ].
Solution
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