Give Any Two Differences Between Alkanes and Alkenes. - Science and Technology 2

Distinguish Between

Give any two differences between alkanes and alkenes.



Differences between alkanes and alkenes:

Alkanes Alkenes
Alkanes are saturated hydrocarbons in which the carbon atoms are linked to each other only by single covalent bonds. Alkenes are unsaturated hydrocarbons in which the valencies of carbon atoms are not fully satisfied by single covalent bonds.
They contain only a single bond. They contain triple bonds.
They are chemically less reactive. They are chemically more reactive.
The substitution reaction is a characteristic property of alkanes. The addition reaction is a characteristic property of alkenes
Their general formula is CnH2n + 2. Their general formula is CnH2n 
  Is there an error in this question or solution?
2013-2014 (March)


Video TutorialsVIEW ALL [1]


‘A’ is an element having four electrons in its outermost orbit. An allotropes ‘B’ of this element is used as a dry lubricant in machinery and in pencil leads. So:
i. Write the name of element ‘A’ and its allotropes.
ii. State whether ‘B’ is a good conductor or non-conductor of electricity?

Define Saturated hydrocarbon.

Define Unsaturated hydrocarbon.

Define Catenation.

Give a chemical test to distinguish between saturated and unsaturated hydrocarbons.

Write a short note on Catenation.

Write the electron-dot structures for ethene.

Give the names and structural formulae of one saturated cyclic hydrocarbon and one unsaturated cyclic hydrocarbon.

You are given the following molecular formulae of some hydrocarbons:
C5H8; C7H14; C6H6; C5H10; C7H12; C6H12

Which two formulae represent unsaturated hydrocarbons having triple bonds?

Which of the following hydrocarbons is unsaturated?
C3H4; C2H6

Which of the two is better for our health : butter or vegetable oil? Why?


Which of the following hydrocarbons can decolourise bromine water and which cannot? Why?
C6H12, C6H14, C6H10

Fill in the blanks and rewrite the completed statements:

The organic compounds having double or triple bond in them are termed as _________________   _________________.

Explain the following reaction with balanced chemical equation:
Calcium reacts with water. 

Which of the following statements are usually correct for carbon compounds? These

  1. are good conductors of electricity
  2. are poor conductors of electricity
  3. have strong forces of attraction between their molecules
  4.  do not have strong forces of attraction between their molecules

Unsaturated hydrocarbons contain multiple bonds between the two C-atoms and show addition reactions. Give the test to distinguish ethane from ethene.

Write the name of the following compound

\ce{H} - \ce{C} - \ce{C} - \ce{C} ≡ \ce{C} - \ce{H}\\


      Forgot password?
Use app×