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Carbohydrate

Assertion: Ar...

Question

Assertion: Arachidic acid is an unsaturated fatty acid. Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids.

A

Both assertion and reason are true and the reason is the correct explanation for assertion.

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B

Both assertion and reason are true but the reason is not the correct explanation for the assertion.

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C

Assertion is true but the reason is false.

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D

Both Assertion and reason are false.

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Solution

The correct option is D Both Assertion and reason are false.
Arachidic acid is also known as the eicosanoic acid. It is a saturated fatty acid found in peanut oil. Unsaturated fatty acids have one or more double bonds between carbon atoms at fixed place along the hydrocarbon chain. Example palmitoleic acid, oleic acid, linolenic acid, arachidonic acid, etc.

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Q. Assertion :Arachidic acid is an unsaturated fatty acid. Reason: There are one or more double bonds present between carbon atoms and unsaturated fatty acids.

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Q. Complete the following passage(s) with an appropriate word/term to be filled in the blank spaces

Glycerol, Methyl, 20 Carbon, Trihydroxy propane, a Carboxyl, Insoluble, Fatty acids, 16 Carbons, Triglycerides, Lower
Lipids are generally water ..........(1)........They could be simple fatty acids. A fatty acid has ..........(2)........ group attached to an R group. The R group could be a ..........(3)........ (--CH

_{3}

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_{2}

_{5}

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_{2}

groups (1 carbon to 19 carbons). For example, palmitic acid has ..........(4)........ including carboxyl carbon. Arachidonic acid has ..........(5)........ atoms including the carboxyl carbon. Fatty acids could be saturated (without double bond) or unsaturated (with one or more C = C double bonds). Another simple lipid is glycerol which is ..........(6):....... Many lipids have both ..........(7)........and ..........(8)........Here the fatty acids are found esterified with glycerol. They can be then monoglycerides, diglycerides and .........(9).......... These are also called fats and oils based on the melting point. Oils have ..........(10)........ melting point (e.g., gingely oil) and hence remain as oil in winters.

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