Related Questions

Which of the following test is used for distinguishing among dry oils, semi-drying oils and non drying oils?
A Elaiden test
B Reichart-Meissl value test
C Henter value test
D Iodine value test
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 of the above
The metal that is used as a catalyst in the hydrogenation of oils is
A Ni
B Pb
C Cu
D Pt
Hydrogenation of edible vegetable oils
A Is an exothermic reaction
B Increases their melting point
C Is done in presence of nickel catalyst
D All of the above
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
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
Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
A Cause cholesterol build up and blood clotting
B Are prone to rancid oxidation
C Always contain some amount of nickel (as their complete removal is very difficult)
D Have affinity to retain harmful sulphur compounds
Carbon particles accummulated on the catalyst used in the gas oil cracking lies in the category of __________ poison.
A Deposited
B Chemisorbed
C Selectivity
D Stability
Catalyst used in the hydrogenation of oil is
A Nickel
B Platinum
C Iron
D Alumina
Poison used for killing rats is
A Calcium phosphide (Ca3P2)
B Zinc phosphide (Zn3P2)
C Magnesium nitride (Mg3N2)
D Magnesium phosphide (Mg3P2)

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