English

The first member of alkyne homologous series is

Advertisements
Advertisements

Question

The first member of alkyne homologous series is

Options

  • ethyne

  • ethene

  • propyne

  • methane

MCQ
Advertisements

Solution

ethyne

Explanation -

The general formula for an alkyne is CnH2n-2. So, the first member of this series is C2H2 (ethyne).

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Carbon and its Compounds - Multiple Choice Questions [Page 33]

APPEARS IN

NCERT Exemplar Science Exemplar Class 10
Chapter 4 Carbon and its Compounds
Multiple Choice Questions | Q 29. | Page 33

Video TutorialsVIEW ALL [2]

RELATED QUESTIONS

Write the next homologue of the following: C2H4


Write the name and formula of the 2nd member of homologous series having general formula CnH2n – 2.


Complete the following table which relates to the homologous series of hydrocarbons.

General

Formula

IUPAC name of the homologous series Characteristic bond type IUPAC name of the first member of the series
`C_nH_(2n-2)` (A)________ (B)______ (C)______
C_nH_(2n+1) (B)________ (E)______ (F)______

 Fill in the following blank with suitable word:

Carbon compounds have usually ... melting points and boiling points because they are ...... in nature.


Write the names and formulae for the first three members of the homologous series for chloroalkanes.


Write the molecular formula of the third member of the homologous series of carbon compounds with general formula CnHO2n+1OH.


Give the names and the structural formula of the first three members of the homologous series of alkanes.


Write the molecular formula of the first two members of the homologous series having functional group  .

 


Write the name and molecular formula of the first member of the homologous series of alkynes.


Write names of first four homologous series of alcohols.


Give three points to differentiate between saturated and unsaturated
hydrocarbons.


The unsaturated hydrocarbons containing a carbon-carbon double bond are called _______.


Saturated hydrocarbon : Single bond : : Unsaturated hydrocarbon : _______


Complete the following table for the homologous series of alkanes.

Name Molecular formula Condensed structural formula Number of carbon atom Number of -CH2- units Boiling point °C
Methane CH4 CH4 1 1 -162
Ethane C2H6 CH3–CH3 2 2 -88.5
Propane C3H8 CH3–CH2–CH3 3 3 -42
Butane C4H10 CH3–CH2–CH2–CH3 ______ ______ 0
Pentane C5H12 CH3–CH2–CH2–CH2–CH3 ______ ______ 36
Hexane C6H14 CH3–CH2–CH2–CH2–CH2–CH3 ______ ______ 69

Which of the following pairs can be the successive members of a homologous series?


A carbon compound ‘A’ having melting point 156K and boiling point 351K, with molecular formula C2H6O is soluble in water in all proportions.

  1. Identify ‘A’ and draw its electron dot structure.
  2. Give the molecular formulae of any two homologues of ‘A’.

Define Homologous series.


Write the chemical formula of two consecutive homologous of organic compounds having functional group - OH. 

What happens to the (i) boiling point and (ii) solubility of organic compounds of a homologous series as the molecular mass increases?


Name the following:

Group of organic compounds where the successive members follow a regular structural pattern, successive compounds differ by a 'CH2' group.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×