Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
COMEDK2023Morning ShiftChemistryHydrocarbonsActual

Ammoniacal silver nitrate forms a white precipitate easily with

Options

  1. ACH ₃ CH = CH ₂
  2. BCH ₃ C = CCH ₃
  3. CCH ₃ C = CH
  4. DCH ₂= CH ₂

Correct answer

C. CH ₃ C = CH

Step-by-step solution

Ammoniacal silver nitrate, also known as Tollens reagent, reacts with terminal alkynes to form a white precipitate of silver acetylide. The general reaction is R-C CH + [Ag(NH₃)₂]^+ OH^- R-C C-Ag + 2NH₃ + H₂O . Among the given options, CH ₃ C CH (propyne) is a terminal alkyne, meaning it has an acidic hydrogen atom attached to the triply bonded carbon. The other compounds, CH ₃ CH = CH ₂ (propene), CH ₃ C CCH₃ (but-2-yne, an internal alkyne), and CH ₂= CH ₂ (ethene), do not possess an acidic terminal hydrogen atom

Practice Hydrocarbons on Quantrex Academy →

More from Hydrocarbons

What is the major product [ P₃ ] formed when n- Hexane undergoes the given series of reactions: n-Hexane V₂O₅; 20 atm, 773k [ P ₁] C₂H₅Cl, Anhyd.AlCl₃; [ P ₂] Conc.HNO₃ + H₂SO₄; 33 2026The statements given below contains assertion and reason. Choose the correct option Assertion (A): Propene reacts with HBr in presence of organic peroxide gives 1-bromopropane. Rea 2026The product formed in the following reaction is: 2026Arrange the given alkanes in increasing order of their boiling points. (A) 2, 2-dimethylpropane (B) 2-methylbutane (C) n -pentane (D) n -butane 2026Select the reagents needed to convert Benzene to 4–Bromophenylpropene in the correct sequential order. (A). Cl ₂/ (B). ( CH ₃)₂ -CHCl /anhyd. AlCl ₃ (C). Alc. KOH (D). Br ₂ / Fe 2026The decreasing order of reactivity towards electrophilic substitutions is: 2026A compound with molecular formula C ₅ H ₁₀ that gives acetone on ozonolysis is: 2026When 2-butyne is treated with dilute H ₂ SO ₄/ HgSO ₄ , the product formed is: 2026 Full Hydrocarbons list All COMEDK PYQs