Question

Evaluate the following statements for their correctness
A. The elevation in boiling point temperature of water will be same for $01 \,M \,NaCl$ and $01\, M$ urea
B. Azeotropic mixtures boil without change in their composition
C. Osmosis always takes place from hypertonic to hypotonic solution
D. The density of $32 \% H _2 SO _4$ solution having molarity $409\, M$ is approximately $126\, g mL ^{-1}$
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 :

• A. B and D only
• B. B, D and E only
• C. A and C only
• D. A, B and D only

Answer 1

Answer: (A)

B and D only

Answer 2

(A) ΔTb​∝i×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=9830×10×1.26​≈4.09M
(E) When KI solutions is added to AgNO3​ solution, positively charged solution results due to adsorption of Ag∘ ions from dispersion medium
AgI/Ag+
Positively charged
So , the correct option is (A) : B and D only