JEE Mains · Chemistry · STD 12 - p -Block elements - ll
White Phosphorus on reaction with concentrated \(NaOH\) solution in an inert atmosphere of \(\mathrm{CO}_{2}\) gives phosphine and compound \((\mathrm{X}) .(\mathrm{X})\) on acidification with \(HCl\) gives compound \((Y)\). The basicity of compound \((Y)\) is
- A \(4\)
- B \(1\)
- C \(2\)
- D \(3\)
Answer & Solution
Correct Answer
(B) \(1\)
Step-by-step Solution
Detailed explanation
\(\mathrm{P}_{4}+3 \mathrm{NaOH}+3 \mathrm{H}_{2} \mathrm{O} \longrightarrow 3 \mathrm{NaH}_{2} \mathrm{PO}_{2} (X)+\mathrm{PH}_{3}\) \(\mathrm{NaH}_{2} \mathrm{PO}_{2}+\mathrm{HCl} \longrightarrow \mathrm{NaCl}+\mathrm{H}_{3} \mathrm{PO}_{2}(Y)\)…
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
- A sample of n-octane \((1.14 \mathrm{~g})\) was completely burnt in excess of oxygen in a bomb calorimeter, whose heat capacity is \(5 \mathrm{~kJ} \mathrm{~K}^{-1}\). As a result of combustion reaction, the temperature of the calorimeter is increased by 5 K. The magnitude of the heat of combustion of octane at constant volume is ______ \(\mathrm{kJ} \mathrm{mol}^{-1}\) (nearest integer).JEE Mains 2025 Medium
- The most suitable reagent for the given conversion is
JEE Mains 2020 Hard - Which one of the following is formed (mainly) when red phosphorus is heated in a sealed tube at \(803 \,\mathrm{~K} ?\)JEE Mains 2021 Easy
- In the given structure, number of sp and \(\mathrm{sp}^2\) hybridized carbon atoms present respectively are :
JEE Mains 2025 Easy - Given below are two statements: one is labelled as Assertion \((A)\) and the other is labelled as Reason \((R)\). Assertion \((A)\): Cis form of alkene is found to be more polar than the trans form Reason \((R)\): Dipole moment of trans isomer of \(2\)-butene is zero. In the light of the above statements, choose the correct answer from the options given below :JEE Mains 2024 Medium
- Consider the following sequence of reactions to give the major product \((X)\)

\(P\) g of the major product \((X)\) formed is reacted with \(NaHCO_3\) solution to liberate a gas which occupied \(11.2\) dm\(^3\) at STP. \(P = \) _____ g. (Given molar mass in g mol\(^{-1}\) H:\(1\), C:\(12\), O:\(16\), Cl:\(35.5\))JEE Mains 2026 Hard
More PYQs from JEE Mains
- In the expansion of \((1+x)\left(1-x^2\right)\left(1+\frac{3}{x}+\frac{3}{x^2}+\frac{1}{x^3}\right)^5, x \neq 0\), the sum of the coefficient of \(x^3\) and \(x^{-13}\) is equal toJEE Mains 2024 Hard
- Let the set \(\mathrm{S}=\{2,4,8,16, \ldots . .512\}\) be partitioned into \(3\) sets \(A, B, C\) with equal number of elements such that \(\mathrm{A} \cup \mathrm{B} \cup \mathrm{C}=\mathrm{S}\) and \(\mathrm{A} \cap \mathrm{B}=\mathrm{B} \cap \mathrm{C}=\mathrm{A} \cap \mathrm{C}=\phi\). The maximum number of such possible partitions of \(S\) is equal to :JEE Mains 2024 Hard
- Let \(A=\{1,2,3,4,5\}\) and \(B=\{1,2,3,4,5,6\}\). Then the number of functions \(f: A \rightarrow B\) satisfying \(f(1)+f(2)=f(4)-1\) is equal toJEE Mains 2023 Hard
- Let \(C\) be the circle of minimum area enclosing the ellipse \(E: \frac{x^2}{a^2}+\frac{y^2}{b^2}=1\) with eccentricity \(\frac{1}{2}\) and foci \(( \pm 2,0)\). Let PQR be a variable triangle, whose vertex \(P\) is on the circle \(C\) and the side \(Q R\) of length 29 is parallel to the major axis of \(E\) and contains the point of intersection of \(E\) with the negative \(y\)-axis. Then the maximum area of the triangle PQR is :JEE Mains 2025 Easy
- Let \(A=\left(\begin{array}{cc}1+ i & 1 \\ - i & 0\end{array}\right)\) where \(i =\sqrt{-1}\) Then, the number of elements in the set \(\left\{ n \in\{1,2, \ldots, 100\}: A ^{ n }= A \right\}\) isJEE Mains 2022 Hard
- The product obtained from the electrolytic oxidation of acidified sulphate solution, is:JEE Mains 2021 Medium