Hydrocarbons – Alkynes (Preparation, Properties, Acidic Nature)
Chemistry · Grade 11 · Week 31 · 25 questions
This Grade 11 chemistry chapter on Hydrocarbons introduces Alkynes (Preparation, Properties, Acidic Nature). A strong base in these ideas makes organic, inorganic, and physical chemistry much more approachable later.
What you'll practise
- Explain Alkynes (Preparation, Properties, Acidic Nature)
- Work through NCERT intext examples and exercise questions for hydrocarbons
- Apply hydrocarbons concepts to NCERT exercise and exemplar problems
All 25 questions in this Hydrocarbons – Alkynes (Preparation, Properties, Acidic Nature) quiz
Grade 11 Chemistry — Hydrocarbons – Alkynes (Preparation, Properties, Acidic Nature): 25 practice questions with instant scoring and explanations.
- General formula for alkynes:
- Alkynes are also called:
- Hybridisation of C in alkyne:
- C≡C bond length in ethyne:
- Bond angle in ethyne:
- Industrial preparation of ethyne from CaC₂:
- Electronic arc preparation:
- Kolbe's electrolysis of sodium fumarate gives:
- Alkynes with terminal C-H (≡CH) are:
- Acidity order: H₂O, NH₃, RC≡CH, RH:
- Terminal alkyne with Na gives:
- Terminal alkyne with NaNH₂ gives:
- Reaction with AgNO₃/NH₄OH gives (test for terminal alkyne):
- Reaction with Cu₂Cl₂/NH₄OH gives:
- Hydrogenation of alkyne with Lindlar's catalyst gives:
- Hydrogenation with Na/liq NH₃ gives:
- Full hydrogenation (H₂/Ni) of alkyne gives:
- Addition of H₂O/Hg²⁺/H₂SO₄ to alkyne gives:
- Ethyne + H₂O/Hg²⁺/H₂SO₄ gives:
- Addition of Br₂ to alkyne gives:
- Polymerisation of ethyne at red hot tube gives:
- Cup and Cupreous Cu₂Cl₂ polymerises ethyne to:
- Ozonolysis of alkyne gives:
- Oxyacetylene flame temperature:
- % s-character of sp carbon:
Question 1 of 250 correct so far