Question

Evaluate the following statements for their correctness. 

(A) The elevation in boiling point temperature of water will be same for 0.1 M NaCl and 0.1 M urea. 

(B) Azeotropic mixtures boil without change in their composition 

(C) Osmosis always takes place from hypertonic to hypotonic solution 

(D) The density of 32% H₂SO₄ solution having molarity 4.09 M is approximately 1.26 g mL^-1

(E) A negatively charged sol is obtained when KI solution is added to silver nitrate solution. 

Choose the correct answer from the options given below : 

(1) B, D, and E only 

(2) A, B, and D only 

(3) A and C only 

(4) B and D only

Answer 1

(4) B and D only

(A) ΔT_b ∝ i x c

(B) Azeotropic mixtures have same composition in both liquid and vapour phase.

(C) Osmosis always takes place from hypotonic to hypertonic solution.

(D) M = \(\frac{30\times10\times1.26}{98}≈4.09M\)

(E) When KI solutions is added to AgNO₃ solution, positively charged solution results due to adsorption of Ag⁺ ions from dispersion medium