Which of the following is an unsaturated fatty acid ?

Related Mcqs:

1. ________________ acid is an unsaturated fatty acid ?

   A. Palmitic
   B. Oleic
   C. Stearic
   D. Oxalic

2. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as ____________________ oil?

   A. Drying
   B. Semi-drying
   C. Non-drying
   D. None of these

3. Sodium salt of higher molecular weight fatty acid is termed as the ______________________ soap?

   A. Hard
   B. Soft
   C. Metallic
   D. Lubricating

4. Unsaturated oils compared to saturated oils have___________________?

   A. Lower melting point & higher reactivity to oxygen
   B. Higher melting point & higher reactivity to oxygen
   C. Lower melting point & lower reactivity to oxygen
   D. Higher melting point & lower reactivity to oxygen

5. Rancidity of the fatty oil can be reduced by its__________________?

   A. Decoloration
   B. Hydrogenation
   C. Oxidation
   D. Purification

6. Fatty material used in soap making is _______________________?

   A. Fatty acid
   B. Fatty alcohols
   C. Tallow
   D. Detergents

7. Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used_______________________?

   A. As a lubricant
   B. As a rust preventive
   C. In hard water for cleaning of cloth
   D. As a foam depressant in distillation column

8. Metallic soap is ________________ salt of fatty acids ?

   A. Sodium
   B. Potassium
   C. Both sodium & potassium
   D. Aluminium or calcium

9. Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its________________?

   A. Poor oxidation stability and high gum forming tendency
   B. Greater tendency of decomposition at elevated temperature
   C. Hydrolysis tendency in presence of water
   D. All A, B. and C

10. In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed ?

    A. Furnace → converter → absorber
    B. Furnace → evaporator → absorber
    C. Furnace → converter → evaporator
    D. Converter → furnace → absorber