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
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
Which gas is used for converting vegetable oils into saturated fats ?
A H2
B O2
C Cl2
D SO2
The basic difference between vegetable oils and fats is in their
A Density
B Chemical properties
C Physical state
D Composition
Oils and fats are converted to soap in a process called
A Hydrogenation
B Esterification
C Saponification
D None of these
Vegetable oils and fats basically differ in their
A Density ranges
B Physical state
C Chemical composition
D Chemical properties
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
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
Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher
A Calorific value
B Higher C/H ratio
C Sulphur content
D Difference in gross & net calorific value

Next steps