Solutions Quiz-15
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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 sum of mole fractions of all the component of a solution is unity
Statement 2: The mole fraction is a temperature-dependent quantity
Q1. Statement 1: The sum of mole fractions of all the component of a solution is unity
Statement 2: The mole fraction is a temperature-dependent quantity
Solution
Q2.Statement 1: A mixture of cyclohexane and ethanol –ve deviation from Raoult’s law.
Statement 2: Cyclohexane reduces the intermolecular attraction between ethanol molecules.
Statement 2: Cyclohexane reduces the intermolecular attraction between ethanol molecules.
Q3. Statement 1: If a liquid solute more volatile than the solvent is added to the solvent the vapour pressure of the solution may increase ie Ps>P0.
Statement 2: In presence of a more volatile liquid solute only the solute will form the vapour and solvent will not.
Statement 2: In presence of a more volatile liquid solute only the solute will form the vapour and solvent will not.
Solution
Q4. Statement 1: Larger the value of cryoscopic constant of the solvent, lesser will be the freezing point of the solution
Statement 2: Depression in the freezing point depends on the nature of the solvent
Solution
Q5.Statement 1: Great care is taken in intra-venous injections to have comparable concentration of solutions to be injected to patient.
Statement 2: By not controlling the concentration the red blood cells may shrink or swell.
Statement 2: By not controlling the concentration the red blood cells may shrink or swell.
Solution
Q6. Statement 1: The water pouch of instant cold pack for treating athletic injuries breaks when squeezed and NH4NO3 dissolves lowering point of temperature.
Statement 2: Addition of non volatile solute into solvent result in depression of freezing point solvent.
Statement 2: Addition of non volatile solute into solvent result in depression of freezing point solvent.
Solution
Q7.Statement 1: A cook cries more in cutting onion rather than cutting an onion taken out from refrigerator.
Statement 2: The cold onion has lower vapour pressure of its volatile content.
Statement 2: The cold onion has lower vapour pressure of its volatile content.
Solution
Q8.Statement 1: Water boiling at 100℃ at 1 atmospheric pressure in a beaker is not at equilibrium
Statement 2: If refers to an open system
Statement 2: If refers to an open system
Solution
Q9.Statement 1: Addition of solvent to a solute always lowers the V.P.
Statement 2: The increase in relative surface area give rise to an increase in V.P.
Statement 2: The increase in relative surface area give rise to an increase in V.P.
Solution
Q10.Statement 1: Iodine is more soluble in CCl4 than in water
Statement 2: Non-polar solutes are more soluble in non-polar solvents
Statement 2: Non-polar solutes are more soluble in non-polar solvents
Solution
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