Vegetable oils and fats basically differ in their

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

The basic difference between vegetable oils and fats is in their

A

Density

B

Chemical properties

C

Physical state

D

Composition

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

Which gas is used for converting vegetable oils into saturated fats ?

A

H₂

B

O₂

C

C_l2

D

SO₂

Oils and fats are converted to soap in a process called

A

Hydrogenation

B

Esterification

C

Saponification

D

None of these

Fats as compared to oils have

A

More unsaturated glycerides of fatty acids

B

Less unsaturated glycerides of fatty acids

C

Much higher reactivity to oxygen

D

Lower melting point

The sides of two cubes differ by 2 cm and their volumes differ by 152 cm3 .What is the length of the side of the smaller one?

A

8 cm

B

4 cm

C

6 cm

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

Vegetable oils and fats basically differ in their

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