A. 8
B. 5.1
C. 6
D. one/fifty one
Related Mcqs:
- The relative lowering of vapour pressure is_____________________?
A. equal to the mole fraction of solvent
B. equal to the mole fraction of solute
C. directly proportional to the mole fraction of solute
D. both B & C - The relative lowering of vapour pressure is directly proportional to molality if the solution is________________?
A. concentrated
B. dilute
C. saturated solution
D. all of the above - Molecular mass of water (18g) means__________________?
A. 1-mole molecules of water
B. 1-gram molecule of water
C. 3-gram atoms
D. all - 1 molar solution of glucose in water contains weight of glucose________________?
A. 180g/dm3
B. 170g/dm3
C. 190g/dm3
D. 195g/dm3 - The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is___________?
A. Dalton’s law
B. Gay Lussac’s law
C. Henry’s law
D. Raoult’s lawSubmitted by: Muhammad Ali Kunbhar
- Vapour pressure is not affected by_______________?
A. Surface area
B. temperature
C. intermolecular forces
D. atmospheric pressure - A substance having very high vapour pressure at its melting point on heating will show_______________?
A. Melting
B. Sublimation
C. Decomposition
D. Condensation - Which set of solutes will form a buffer when dissolved in water to make 1 litter of solution ?
A. 0.0002M HCI
B. 0.2 mole of NaCI with 0.2 mole of HNO3
C. 0.4 mole of CH3COOH with 0.4 mole of NaOH
D. 0.4 mole of NH3 with 0.2 mole of HCI - Hypochlorous acid is used for disinfecting the water it reacts with the dissolved ammonia producing___________________?
A. NH2Cl
B. NHCI2
C. NCI2
D. all of the above - When common salt is dissolved in water ?
A. Boiling point of water decrease
B. Boiling point of water increase
C. Boiling point of water remains same
D. None of the above
