Identify the triple bond unsaturated hydrocarbon:
(a) CH₄
(b) C₂H₆
(c) C₂H₄
(d) C₂H₂
WBBSE
Class X
Physical Science
Organic Chemistry
01 Mark
2025
(d) C₂H₂
Explanation
A triple bond unsaturated hydrocarbon is known as an alkyne. Alkynes contain at least one carbon-carbon triple bond (C≡C).
Among the given compounds:
- CH₄ (Methane) → Saturated hydrocarbon (single bonds only)
- C₂H₆ (Ethane) → Saturated hydrocarbon (single bonds only)
- C₂H₄ (Ethene) → Unsaturated hydrocarbon (double bond)
- C₂H₂ (Ethyne/Acetylene) → Unsaturated hydrocarbon (triple bond)
Related Questions
More WBBSE Easy level questions
1/12
Q.
Write the name of monomer of a polymer which is used to prepare non-stick utensils.
A.
Tetrafluoroethylene (TFE) Chemical Formula: CF₂ = CF₂
Q.
Which gaseous hydrocarbon is used for ripening of fruits?
A.
Ethene (Ethylene) – C₂H₄ Explanation Ethene (ethylene) is a gaseous hydrocarbon that...
Q.
Write down the structural formula of the principal constituent of LPG
A.
The principal constituent of LPG (Liquefied Petroleum Gas) is propane. The structural...
Q.
Write down the names of two organic compounds with different functional groups designated by the...
A.
Two organic compounds with the formula C₂H₆O but different functional groups are:...
Q.
Which compound is used to prepare melamine ?
A.
The compound used to prepare melamine is urea.
Q.
Draw the structural formula of a saturated hydrocarbon containing two carbon atoms.
A.
The structural formula of ethane:
Q.
Write one use of denatured spirit
A.
Denatured spirit is used as a solvent and fuel in various industries.
Q.
Write IUPAC name for CH3CH=CH2
A.
The IUPAC name for CH₃CH=CH₂ is prop-1-ene. OR In methane (CH4), the...
Q.
Which of the following is an alcohol?
A.
d. CH₃CH₂OH Explanation: CH₃CH₂OH (Ethanol) contains the –OH functional group, so it...
Q.
Give one example of reducing property of H₂S.
A.
Hydrogen sulphide (H₂S) reduces acidified potassium dichromate solution from orange to green....
Q.
CH₃COOH is an organic compound but NaHCO₃ is not an organic compound — give reason.
A.
CH₃COOH (Acetic acid) is an organic compound because it contains carbon bonded...
Q.
Mention one use of CNG. Discuss one each of the harmful effects of methanol and...
A.
Use of CNG Compressed Natural Gas (CNG) is used as a clean...