JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
Which of the following statements are correct? \(A\). Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point. \(B\). Aniline can be purified by steam distillation as aniline is miscible in water. \(C\). Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope. \(D\). An organic compound is pure, if mixed \(M.P\). is remained same. Choose the most appropriate answer from the options given below :
- A \(A, B, C\) only
- B \(A, C, D\) only
- C \(B, C, D\) only
- D \(A, B, D\) only
Answer & Solution
Correct Answer
(B) \(A, C, D\) only
Step-by-step Solution
Detailed explanation
Option \((B)\) is incorrect because aniline is immisible in water.
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Given below are two statements:
Statement I: Sucrose is dextrorotatory. However sucrose upon hydrolysis gives a solution having mixture of products. This solution showing laevorotation.
Statement II: Hydrolysis of sucrose gives glucose and fructose. Since the laevorotation of glucose is more than the dextrorotation of fructose the resulting solution becomes laevorotatory.
In the light of the above statements, choose the correct answer from the options given below.JEE Mains 2026 Easy - Phenolic group can be identified _______ by a positive.JEE Mains 2024 Medium
- The transition element that has lowest enthalpy of atomisation isJEE Mains 2019 Easy
- A \(20.0 \,mL\) solution containing \(0.2 \,g\) impure \(H _{2} O _{2}\) reacts completely with \(0.316 \,g\) of \(KMnO _{4}\) in acid solution. The purity of \(H _{2} O _{2}(\) in \(\%)\) is........... (mol. wt. of \(H _{2} O _{2}=34 ;\) mol. wt. of \(\left. KMnO _{4}=158\right)\)JEE Mains 2020 Hard
- Which statements are NOT TRUE about \( XeO_{2}F_{2} \)?
A. It has a see-saw shape.
B. Xe has 5 electron pairs in its valence shell in \( XeO_{2}F_{2} \).
C. The O-Xe-O bond angle is close to \( 180^{\circ} \).
D. The F-Xe-F bond angle is close to \( 180^{\circ} \).
E. Xe has 16 valence electrons in \( XeO_{2}F_{2} \).
Choose the correct answer from the options given below.JEE Mains 2026 Easy - The increasing order of \(pK _{ a }\) for the following phenols is \((A)\) \(2, 4-\)Dinitrophenol \((B)\) \(4 -\) Nitrophenol \((C)\) \(2, 4, 5-\)Trimethylphenol \((D)\) Phenol \((E)\) \(3-\)ChlorophenolJEE Mains 2023 Hard
More PYQs from JEE Mains
- Arrange the following in order of magnitude of work done by the system / on the system at constant temperature :
(a) \(\left|\mathrm{w}_{\text {reversible }}\right|\) for expansion in infinite stage.
(b) \(\left|w_{\text {irreversible }}\right|\) for expansion in single stage.
(c) \(\left|w_{\text {reversible }}\right|\) for compression in infinite stage.
(d) \(\left|w_{\text {irreversible }}\right|\) for compression in single stage.
Choose the correct answer from the options given below:JEE Mains 2025 Medium - A body of mass 4 kg is placed on a plane at a point P having coordinate \((3,4) \mathrm{m}\). Under the action of force \(\overrightarrow{\mathrm{F}}=(2 \hat{i}+3 \hat{j}) \mathrm{N}\), it moves to a new point Q having coordinates \((6,10) \mathrm{m}\) in 4 sec . The average power and instanteous power at the end of 4 sec are in the ratio of :JEE Mains 2025 Easy
- Let \(f(x)=\int x^3 \sqrt{3-x^2} d x\). If \(5 f(\sqrt{2})=-4\), then \(f(1)\) is equal toJEE Mains 2025 Medium
- Given an \(A.P.\) whose terms are all positive integers. The sum of its first nine terms is greater than \(200\) and less than \(220\). If the second term in it is \(12\), then its \(4^{th}\) term isJEE Mains 2014 Hard
- Two identical bodies, projected with the same speed at two different angles cover the same horizontal range \(R\). If the time of flight of these bodies are \(5\) s and \(10\) s, respectively, then the value of \(R\) is ________ m. (Take \(g=10\) m/s\(^2\))JEE Mains 2026 Medium
- If the area of the region \(\left\{( x , y ): x ^{\frac{2}{3}}+ y ^{\frac{2}{3}} \leq 1 x + y \geq 0, y \geq 0\right\}\) is \(A\), then \(\frac{256 A }{\pi}\)JEE Mains 2022 Hard