A solution of acetone in ethanol:

• shows a negative deviation from Raoult's law

• shows a positive deviation from Raoult's law

• behave likea near ideal solution

• behave likea near ideal solution

502.

During osmosis, flow of water through a semi-permeable membrane is: 

• from a solution having higher concentration only

• from both sides of a semi-permeable membrane with equal flow rates

• from both sides of a semi-permeable membrane with unequal flow rates

• from both sides of a semi-permeable membrane with unequal flow rates

If molality of the dilute solution is doubled, the value of molal depression constant (K_f) will be

• Doubled

• Halved

• Tripled

• Tripled

Which of the following is dependent on temperature?

• Molality

• Molarity

• Mole fraction

• Mole fraction

Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations :

$$\begin{gathered} a) 60 mL \frac{M}{10} HCl + 40 mL \frac{M}{10} NaOH \\ b) 55 mL \frac{M}{10}HCl + 45 mL \frac{M}{10} NaOH \\ c) 75 mL \frac{M}{5} HCl + 25 mL \frac{M}{5} NaOH \\ d)\hspace{0.17em}100 mL \frac{M}{10} HCl + 100 mL\frac{M}{10} NaOH \end{gathered}$$

pH of which one of them will be equal to 1?

• b

• a

• c

• d

The solubility of BaSO₄ in water is 2.42 × 10^–3 gL^–1 at 298 K. The value of its solubility product (K_sp) will be
(Given the molar mass of BaSO₄ = 233 g mol^–1)

• 1.08 x 10^-10 mol²L^-2

• 1.08 x 10^-12 mol²L^-2

• 1.08 x 10^-8 mol²L^-2

• 1.08 x 10^-14 mol²L^-2

The normality of 10% (w/v) of acetic acid is

• 1 N

• 1.3 N

• 1.7 N

• 1.9 N

Consider the following solutions, 

A = 0.1 M glucose,

B = 0.05 M NaCl,

C = 0.05 M BaCl₂

D = 0.1 M AlCl₃

Which of the following pairs is isotonic?

• A and B

• A and D

• A and C

• B and C

Which of the following aqueous solution should have a highest boiling point?

• 1.0 M NaOH

• 1.0 M Na₂SO₄

• 1.0 M NH₄NO₃

• 10 MKNO₃

Combustion of glucose takes place according to the equation.

C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O

Δ = - 72 k-cal

The energy required for combustion of 1.6 g of glucose is

• 0.064 kcal

• 0.64 kCal

• 6.4 kcal 

• 64 kcal