Fats as compared to oils have

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

C_l2

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

Fats as compared to oils have

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