
Which of the following is highly inflammable?
(A) Alkenes
(B) Alkanes
(C) Alkynes
(D) None of these
Answer
133.8k+ views
Hint: The substances which have very low explosion temperature and can catch fire easily with a fire are called inflammable substances. For example petrol, alcohol, and Liquefied Petroleum Gas (LPG) are called inflammable substances.
Complete step by step answer:
Inflammable substances and flammable substances both mean combustible substances.
The substance which has low ignition temperature catches fire easily.
Among the given options alkanes, alkenes, and alkynes, saturated hydrocarbons means alkanes are highly inflammable.
The reason why alkanes are highly inflammable is they contain single bonds in their structure. Single bonds can break easily when compared to double and triple bonds. We have to take a lot of care while handling inflammable substances.
When alkenes and alkynes are supposed to react with fire the multiple bonds present in them should break. To break multiple bonds there is a need for a lot of energy.
Therefore alkanes are highly inflammable when compared to alkenes and alkynes.
So, the correct option is B.
Additional information:
Hydrogen gas is highly inflammable gas and it has very less molecular weight.
Kerosene also has low ignition temperature and it is inflammable.
Methane is also a inflammable substance and methane is also called natural gas.
Note: Low ignition temperature means at lowest temperature the substance when heated catches fire in air and continues its combustion to burn. The substances should be saturated to act as inflammable substances. Small saturated hydrocarbons are only called as inflammable substances.
Complete step by step answer:
Inflammable substances and flammable substances both mean combustible substances.
The substance which has low ignition temperature catches fire easily.
Among the given options alkanes, alkenes, and alkynes, saturated hydrocarbons means alkanes are highly inflammable.
The reason why alkanes are highly inflammable is they contain single bonds in their structure. Single bonds can break easily when compared to double and triple bonds. We have to take a lot of care while handling inflammable substances.
When alkenes and alkynes are supposed to react with fire the multiple bonds present in them should break. To break multiple bonds there is a need for a lot of energy.
Therefore alkanes are highly inflammable when compared to alkenes and alkynes.
So, the correct option is B.
Additional information:
Hydrogen gas is highly inflammable gas and it has very less molecular weight.
Kerosene also has low ignition temperature and it is inflammable.
Methane is also a inflammable substance and methane is also called natural gas.
Note: Low ignition temperature means at lowest temperature the substance when heated catches fire in air and continues its combustion to burn. The substances should be saturated to act as inflammable substances. Small saturated hydrocarbons are only called as inflammable substances.
Recently Updated Pages
JEE Main 2025 Session 2 Form Correction (Closed) – What Can Be Edited

Sign up for JEE Main 2025 Live Classes - Vedantu

JEE Main Books 2023-24: Best JEE Main Books for Physics, Chemistry and Maths

JEE Main 2023 April 13 Shift 1 Question Paper with Answer Key

JEE Main 2023 April 11 Shift 2 Question Paper with Answer Key

JEE Main 2023 April 10 Shift 2 Question Paper with Answer Key

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility, & More

JEE Main 2025: Conversion of Galvanometer Into Ammeter And Voltmeter in Physics

JEE Main 2025: Derivation of Equation of Trajectory in Physics

Electric Field Due to Uniformly Charged Ring for JEE Main 2025 - Formula and Derivation

JEE Main Chemistry Question Paper with Answer Keys and Solutions

Free Radical Substitution Mechanism of Alkanes for JEE Main 2025

Other Pages
NCERT Solutions for Class 11 Chemistry Chapter 9 Hydrocarbons

JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

NCERT Solutions for Class 11 Chemistry Chapter 5 Thermodynamics

Hydrocarbons Class 11 Notes: CBSE Chemistry Chapter 9

NCERT Solutions for Class 11 Chemistry Chapter 7 Redox Reaction

Thermodynamics Class 11 Notes: CBSE Chapter 5
