231.

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

when the heat of reaction at constant pressure is -2.5 x 10³ cal can entropy change is 7.4 cal deg^-1 at 25^oC, the reaction is predicted as

• reversible

• Spontaneous

• non -spontaneous

• Irreversible

The volume of water to be added to 100 cm³ of 0.5 NH₂SO₄ to get decinormal concentration is

• 100 cm³

• 450 cm³

• 500 cm³

• 400 cm³

Solid NaHCO₃ will be neutralised by 40.0 mL of 0.1 M H₂SO₄ solution. What would be the weight of solid NaHCO₃ in gram?

• 0.672 g

• 6.07 g

• 17 g

• 20 g

A solution with negative deviation among the following is

• ethanol-acetone

• chlorobenzene-bromobenzene

• chloroform-acetone

• benzene-toluene

For an ideal binary liquid solution with ${\mathrm{p}}_{\mathrm{x}}^0 > {\mathrm{p}}_{\mathrm{y}}^0$ in which relation between X_x (mole fraction of X in liquid phase) and Y_x ( mole fraction of Y in liquid and vapour phase respectively.

• X_x > Y_X

• X_x = Y_x

• $\frac{{\mathrm{X}}_{\mathrm{X}}}{{\mathrm{X}}_{\mathrm{Y}}} < \frac{{\mathrm{Y}}_{\mathrm{X}}}{{\mathrm{Y}}_{\mathrm{Y}}}$

• X_X, Y_X, X_Y and Y_Y cannot be correlated

In an experiment, addition of 4.0 mL of 0.005 M BaCl₂ to 16.0 mL of arsenious sulphide sol just causes complete coagulation in 2 h. The flocculating value of the effective ion is

• Ba²⁺, 1.0

• Ba²⁺, 2.0

• Cl^-, 1.0

• Cl^-, 2.0