JEE Mains · Chemistry · STD 12 - 9. Amines
Following is a confirmatory test for aromatic primary amines. Identify reagent \((A)\) and \((B)\)

- A \(\mathrm{A}=\mathrm{HNO}_3 / \mathrm{H}_2 \mathrm{SO}_4\)
- B \(\mathrm{A}=\mathrm{NaNO}_2+\mathrm{HCl}, 0-5^{\circ} \mathrm{C}\)
- C \(\mathrm{A}=\mathrm{NaNO}_2+\mathrm{HCl}, 0-5^{\circ} \mathrm{C}\)
- D \(\mathrm{A}=\mathrm{NaNO}_2+\mathrm{HCl}, 0-5^{\circ} \mathrm{C}\)
Answer & Solution
Correct Answer
(D) \(\mathrm{A}=\mathrm{NaNO}_2+\mathrm{HCl}, 0-5^{\circ} \mathrm{C}\)
Step-by-step Solution
Detailed explanation
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
- Common name of Benzene-\(1, 2\)-diol is _______.JEE Mains 2024 Medium
- The total number of intensive properties from the following is \(........\). Volume, Molar heat capacity, Molarity, \(E ^\theta\) cell, Gibbs free energy change, Molar mass, MoleJEE Mains 2023 Medium
- Zinc reacts with hydrochloric acid to give hydrogen and zinc chloride. The volume of hydrogen gas produced at \(STP\) from the reaction of \(11.5\,g\) of zinc with excess \(HCl\) is \(..........L\) (Nearest integer) (Given : Molar mass of \(Zn\) is \(65.4\,g\,mol ^{-1}\) and Molar volume of \(H _2\) at \(STP =22.7\,L\) )JEE Mains 2023 Hard
- The process with negative entropy change isJEE Mains 2019 Hard
- Mass of methane required to produce \(22 \mathrm{~g}\) of \(\mathrm{CO}_2\) after complete combustion is ___________\(g.\) (Given Molar mass in \(g\) mol-1 \(\mathrm{C}=12.0\) \( \mathrm{H}=1.0 \) \( \mathrm{O}=16.0)\)JEE Mains 2024 Hard
- For a reaction \(A \rightarrow P\) at \(T\text{ K}\), the half life \((t_{1/2})\) is plotted as a function of initial concentration \([A]_0\) of \(A\) as given below.

The value of \(x\) in the given figure is _______ s (Nearest integer)JEE Mains 2026 Easy
More PYQs from JEE Mains
- If the function \(f(x)=\left(\frac{1}{x}\right)^{2 x} ; x>0\) attains the maximum value at \(\mathrm{x}=\frac{1}{\mathrm{e}}\) then :JEE Mains 2024 Hard
- The total number of hydrogen atoms in product \(\mathrm{A}\) and product \(B\) is _______.
JEE Mains 2024 Hard - Let the tangent at any point \(P\) on a curve passing through the points \((1,1)\) and \(\left(\frac{1}{10}, 100\right)\), intersect positive \(x\)-axis and \(y\)-axis at the points \(A\) and \(B\) respectively. If \(P A: P B=1: k\) and \(y=y(x)\) is the solution of the differential equation \(e^{\frac{d y}{d x}}=k x+\frac{k}{2}\), \(y(0)=k\), then \(4 y(1)-5 \log _e 3\) is equal to \(.........\).JEE Mains 2023 Hard
- At \(345\, K\), the half life for the decomposition of a sample of a gaseous compound initially at \(55.5\, kPa\) was \(340\, s\). When the pressure was \(27.8 \,kPa\), the half life was fund to be \(170\, s\). The order of the reaction is \(......\) [integer answer]JEE Mains 2022 Medium
- If the image of the point \((-4,5)\) in the line \(x+2 y=2\) lies on the circle \((x+4)^2+(y-3)^2=r^2\), then \(r\) is equal lo:JEE Mains 2024 Medium
- The length of the latus rectum and directrices of a hyperbola with eccentricity e are 9 and \(\mathrm{x}= \pm \frac{4}{\sqrt{3}}\), respectively. Let the line \(y-\sqrt{3} \mathrm{x}+\sqrt{3}=0\) touch this hyperbola at \(\left(\mathrm{x}_0, \mathrm{y}_0\right)\). If \(\mathrm{m}\) is the product of the focal distances of the point \(\left(\mathrm{x}_0, \mathrm{y}_0\right)\), then \(4 \mathrm{e}^2+\mathrm{m}\) is equal to ...........JEE Mains 2024 Hard