
IIT JEE : Solutions QUESTIONS AND ANSWERS :: part3 : 6 to 10
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
6.The molality of 2% (w/w) aqueous solution of sodium chloride is |
0.17 m |
0.7 m |
1 m |
0.34 m. |
7.If 0.1 M solution of glucose and 0.1 M solution of urea are placed on two sides of the semipermeable membrane to equal heights, then it will be correct to say that |
There will be no net movement across the membrane |
Glucose will flow towards urea towards urea solution |
Urea will flow towards glucose solution |
Water will flow from urea solution to glucose solution. |
8.Freezing point of an aqueous solution is 272.48 K. The osmotic pressure of the same solution at 310 K will be |
7.1 pka |
56 torr |
7.1 atm |
6.1 atm |
9.During molecular weight determination of non-volatile solute by cryoscopic method, Beckmann Thermometer is used to determine the |
depression in freezing point or elevation in boiling point |
exact freezing point of the solution |
exact boiling point of the solution |
lowering in vapour pressure |
10.The enthalpy change on mixing water and ethanol at room temperature is |
Zero |
Positive |
Negative |
Depends on proportion of alcohol in the solution. |
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