What Will Be the Formula and Electron Dot Structure of Cyclopentane? - Science


What will be the formula and electron dot structure of cyclopentane?



The formula for cyclopentane is C5H10. Its electron dot structure is given below.

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Chapter 4: Carbon and its Compounds - Intext Questions [Page 68]


NCERT Science Class 10
Chapter 4 Carbon and its Compounds
Intext Questions | Q 3 | Page 68

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Give any two differences between alkanes and alkenes.

‘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.

 Draw the electron dot structures for propanone

 Give a test that can be used to differentiate chemically between butter and cooking oil.

Why are certain compounds called hydrocarbons? Write the general formula for homologous series of alkanes, alkenes and alkynes and also draw the structure of the first member of each series. Write the name of the reaction that converts alkenes into alkanes and also write a chemical equation to show the necessary conditions for the reaction to occur.

Write a short note on Catenation.

Write the electron-dot structures for ethyne.

Fill in the following blank with suitable word:

Ethyne has ......... carbon-hydrogen single bonds.

Which of the following will give addition reaction and why?
C4H10, C2H6, C2H4, CH4, C3H8, C3H4

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


What are hydrocarbons? Write the general formula of (i) saturated hydrocarbons, and (ii) unsaturated hydrocarbons and draw the structure of one hydrocarbon of each type. How can an unsaturated hydrocarbon be made saturated?

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. 

Identify the unsaturated compounds from the following:

  1. Propane
  2. Propene
  3. Propyne
  4. Chloropropane

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


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