ICSE Worksheet for Chapter - 11 Hydrocarbons Class 8

Worksheets For class 8

Find ICSE  Worksheet for chapter-11 Hydrocarbons class 8

1. CLASS-8
2. BOARD: ICSE
3. Chemistry Worksheet - 11
4. TOPIC: Hydrocarbons
5. For other ICSE Worksheet for class 8 Science check out main page of Physics Wallah.

• SUMMARY –

• Organic chemistry – definition, organic compounds and its classification.
• General formula, molecular formula, structural formula, reactions undergone and reactivity of alkanes, alkenes, alkynes.
• Preparation, properties and uses of –

1. Alkanes
2. Alkenes
3. Alkynes
4. Alcohol, aldehydes, carboxylic acids.

SECTION- 1

1. Select the correct answer :
   1. The general formula of saturated hydrocarbon is ___________(C_nH_2n+2 , C_nH_2n-2).
   2. Select the alkyne from ___________________(C₇H₁₉ , C₅H₈).
   3. The number of C-H bonds in Ethane (C₂H₆) molecule is ________(six , eight).
   4. ___________(C₂H₆ ,C₂H₄) is not an alkane.
   5. IUPAC name of CH₃CH₂OH is ______________(ethyl alcohol, ethanol)
   6. Alkynes are ______(more ,less) reactive than alkanes and alkenes.
2. Give IUPAC name of the following :
   1. (CH₃)₃CCH=CH₂
   2. (CH₃)₂CHCH₃
   3. CH₂=CH-CH-(CH₃)₂
   4. CH₃-CH₂-CH₂-OH
3. Write the structural formula of the following compounds :
   1. Acetic acid
   2. Methyl alcohol
   3. cFormaldehyde
   4. Tetra chloroethane.
   5. Ethane
   6. Ethane
   7. Ethyne

SECTION -2

1. Explain substitution reaction and addition reaction giving examples.
2. Give laboratory preparation of :-
   1. Methane
   2. Ehene
   3. Ethyne
   4. Methyl alcohol
3. What are saturated hydrocarbons ? Give two examples.
4. Define organic chemistry.
5. Why carbon is able to form large number of compounds ?
6. What happens when sodium metal reacts with
   1. Methyl alcohol
   2. Acetic acid
7. Give one use of each of the following :
   1. Methane
   2. Ethane
   3. Ethyne
   4. Methanol
   5. Formaldehyde
   6. Acetic acid