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Federal (FBISE) · Chapter test · Free

9th Class Chemistry Chapter 14 Test14. Hydrocarbons

25 marks · 40 minutes · 16 questions. Covers: 14. Hydrocarbons.

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9th Class Chemistry Chapter 14 Test

9th Class · Chemistry · Federal (FBISE)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 25Time: 40 minutes

Q1. Multiple choice questions (Attempt all · 5 × 1 = 5)

  1. Combustion of methane produces:
    1. Carbon dioxide
    2. Water
    3. Heat
    4. All of these
  2. Reduction of chloromethane gives:
    1. Hydrogen
    2. Chlorine
    3. Methane
    4. All of these
  3. Which product is obtained when chloromethane is reduced?
    1. Ethane
    2. Ethene
    3. Methane
    4. Ethyne
  4. Which molecule contains a carbon–carbon single bond?
    1. Ethane
    2. Ethene
    3. Ethyne
    4. Methanol
  5. By hydrogenation we mean the addition of:
    1. Hydrogen
    2. Water
    3. Halogen
    4. Hydrogen halide

Q2. Short questions (Attempt any 6 of 8 · 6 × 2 = 12)

  1. What can be evaporated from link to recover dye?
    1. water
    2. solvent
    3. alcohol
    4. pigment
  2. What do you mean by hydrogenation reaction? Give one example.
  3. Draw structure of ethane.
  4. The colour imparted by the flame of sodium metal is:
    1. Blue
    2. Green
    3. Golden yellow
    4. Purple
  5. Draw structural formula of an alkane containing five carbon atoms.
  6. Which substance would have a higher rate of evaporation?
    1. water at 10 ºC
    2. water at 20 ºC
    3. water at 5 ºC
    4. water at 30 ºC
  7. What can we determine about the intermolecular forces of a substances with a high enthalpy of vaporization?
    1. they are weak
    2. they are strong
    3. they are nuetral
    4. they are non-existent
  8. Give three examples of saturated hydrocarbons.

Q3. Long questions (Attempt any 2 of 3 · 2 × 4 = 8)

  1. Discuss methods for the preparation ethane.
  2. Write a chemical equation to show the preparation of an alkane from an alkene and an alkyne.
  3. What is alkanes?