Free download in PDF Class 12 Chemistry Chapter 2 Solutions Short Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. These short solved questions or quizzes are provided by Gkseries./p>
What quantity of urea required to prepare 20 % w/w solution having weight 150 gm ?
3
What will be the mole-fraction of ethanol in solution, prepared by dissolving 9.2 gm ethanol in 900 gm water ? (Molecular weight of water and ethanol are 18 and 48 gm/mole respectively)
11
What will be the molality of the solution prpared using 500 gm of 25 % w/w NaOH and 500 gm of 15 % w/w NaOH solution ? (Molecular weight of NaOH = 40 gm/mole)
15
Boiling point of Aqueous solutions of 0.05 m ABC and 0.02 m X2Y3 are same at 1 bar pressure; then, what will be the values of Van’t Hoff factor (i) for solute in both the solutions ?
16
Which of the following substances having concentration of aqueous solution 1% w/w, possesses higher boiling point ? (Molecular weight of Kcl, BaCl2, glucose and Al2(SO4)3 are 74.5, 208, 342 gm’mole respectively) (Assume that inonic solids dissociates completely in their aqueous solution)
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At 353 K temperature, the Vapour pressure of pure liquids A and B are 600mm and 800 mm respectively. If mixture of liquids A and B boils at 353 K and 1 bar pressure, then mole proportion of B in percent is -
20
What amount of urea dissolved in 1 kg water at constant temperature, so that vapour pressure of the solution reduced by 2% ? ( M.W of urea = 60 gm/mole)
