Related Questions

Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F.
A [

A.

B. >120

B 90-110
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
Those who are vulnerable are___.
A aggressive and uncooperative
B need to be treated in intensive care units
C guilty of a crime
D susceptible to injury or disease
Air pollutions now are___
A Widespread and short- lived
B Not widespread
C Responsible for health problems
D Limited in their effects
In a centralized system, program manggers are___
A given quick feed-back without time-lags in analysis and response
B likely to suffer from deficiencies in information flows for time -lags in analysis and response
C good time planners with all statistical flow time lags in analysis and response
D more efficiently in a centralized system
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
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
Flash point of most vegetable oils is about __________ °C.
A 50
B 100
C 200
D 300

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