AP EAMCET · Chemistry · General Organic Chemistry
Which one of the following used for purification of aldehydes?
- A \(\mathrm{NaOCl}\)
- B \(\mathrm{NaHSO}_3\)
- C \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{SO}_2 \mathrm{Cl}\)
- D \(\mathrm{Na}_2 \mathrm{SO}_4\)
Answer & Solution
Correct Answer
(B) \(\mathrm{NaHSO}_3\)
Step-by-step Solution
Detailed explanation
Carbonyl compounds (aldehydes) form solid additive products with \(\mathrm{NaHSO}_3\) which get separated out. The solid bisulphites of carbonyl compounds on hydrolysis by dilute acid regenerate carbonyl compound. Thus, this property is used for purification of carbonyl…
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
- When a dilute \(\mathrm{AgNO}_3\) solution is mixed with excess of dilute \(\mathrm{KI}\), the colloidal solution formed isAP EAMCET 2022 Easy
- The greater the valence of the flocculating ion added, the greater is its power to cause precipitation of a colloid. This rule isAP EAMCET 2023 Easy
- Given below are two statements
Assertion (A): All Cu (II) halides are known except the iodide
Reason (R): \(\mathrm{Cu}^{2+}\) oxidizes \(\mathrm{I}^{-}\)to \(\mathrm{I}_2\)
The correct answer isAP EAMCET 2023 Medium - The rate equation for a first order reaction is given by \([R]=[R]_0 e^{-k t}\). A straight line with positive slope is obtained by plotting. \([R]_0=\) initial concentration of reactant, \([R]=\) concentration of reactant at time, \(t\)AP EAMCET 2019 Easy
- A compound \(X\), of boron reacts with \(\mathrm{NH}_3\) on heating to give another compound \(Y\), which is called inorganic benzene. The compound \(X\) can be prepared by treating \(\mathrm{BF}_3\) with lithium aluminium hydride. The compounds \(X\) and \(Y\) are represented by the formulas.AP EAMCET 2020 Medium
- At \(298 \mathrm{~K}\), if the vapour pressure of pure liquids toluene, benzene, chloroform and dichloromethane are 60,160, 200 and 415 torr respectively. Then which liquid is having high boiling point?AP EAMCET 2023 Medium
More PYQs from AP EAMCET
- If a committee of 10 members is to be formed from 8 men and 6 women, then the number of different possible committees in which the men are in majority isAP EAMCET 2024 Medium
- Two short magnets \(A B\) and \(C D\) are in the \(X-Y\) plane and are parallel to \(X\)-axis and co-ordinates of their centres respectively are \((0,2)\) and \((2,0)\). Line joining the north-south poles of \(C D\) is opposite to that of \(A B\) and lies along the positive \(X\)-axis. The resultant field induction due to \(A B\) and \(C D\) at a point \(P(2,2)\) is \(100 \times 10^{-7} \mathrm{~T}\). When the poles of the magnet \(C D\) are reversed, the resultant field induction is \(50 \times 10^{-7} \mathrm{~T}\). The value of magnetic moments of \(A B\) and \(C D\) (in \(\mathrm{Am}^2\) ) are :AP EAMCET 2006 Hard
- In a , medians, and are drawn. If , , then the area of the isAP EAMCET 2021 Medium
- In the structure of diborane, the number of 2-centre-2-electron bonds is X and 3-centre-2-electron bonds is Y. The value of \((\mathrm{X}+\mathrm{Y})\) isAP EAMCET 2025 Medium
- The least intercept made by a tangent to the ellipse \(\frac{x^2}{64}+\frac{y^2}{49}=1\) with coordinate axes isAP EAMCET 2022 Hard
- The direction cosines of the vector \(\mathbf{a}=-2 \hat{\mathbf{i}}+\hat{\mathbf{j}}-5 \hat{\mathbf{k}}\) areAP EAMCET 2020 Easy