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Lipids



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Q1. In which type of chromatography lipids are carried up a silica gel coated pate by a rising solvent front, less polar travels farther than the more polar ones?

(a) Absorption chromatography
(b) Thin layer chromatography
(c) Gas-liquid chromatography
(d) HPLC

Q2. Which of the following is not a phospholipase?

(a) A
(b) C
(c) D
(d) K

Q3. The dye used in TLC for detecting separated lipids by spraying the plate is __________

(a) Mordant
(b) Alizarin
(c) Rhodamine
(d) Fuchsin

Q4. Which technique is preferred in the separation of fatty acyl methyl esters from a mixture?

(a) Gas-liquid chromatography
(b) Absorption chromatography
(c) TLC
(d) Centrifugation

Q5. A mixture of fatty acyl methyl esters are separated based on __________

(a) Charge
(b) Chain length and degree of saturation
(c) Molecular weight
(d) Ionic size

Q6. For the determination of fatty acid composition, transesterification is done in a warm aqueous solution of __________

(a) KCl+methanol
(b) KOH+methanol
(c) NaOH+methanol
(d) H2O+methanol

Q7. Phosphatidylinositol, phosphatidylglycerol and phosphatidylserine are easily separated by __________

(a) Absorption chromatography
(b) TLC
(c) HPLC
(d) Gas-liquid chromatography

Q8. In which type of chromatography, solvents of increasing polarity are passed through a column of silica gel?

(a) High performance liquid chromatography
(b) Thin layer chromatography
(c) Adsorption chromatography
(d) Gas-liquid chromatography

Q9. Which would move faster in thin layer chromatography?

(a) Beeswax
(b) Phosphatidylinositol
(c) Cholesterol
(d) Steroid

Q10. Which of the following is false about lipids?

(a) They are either strongly hydrophobic or amphipathic
(b) They are more soluble in water
(c) Extraction of lipids from tissues require organic solvents
(d) They are insoluble in water


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In An Alkaline Medium, Glycine Predominantly Exist As/in A/an

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In An Alkaline Medium, Glycine Predominantly Exist As/in A/an

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Which One Of The Following Statements Is Correct?

Modified 305 Year Ago

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Polysaccharides Have - Linkage.

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Polysaccharides Have - Linkage.

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Hydrolysis Of Proteins Give:

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Hydrolysis Of Proteins Give:

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A Carbohydrate Is Treated With A-naphthol And Conc. H2SO4. What Colour Will Be Formed At The Junction Of Two Liquids?

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A Carbohydrate Is Treated With A-naphthol And Conc. H2SO4. What Colour Will Be Formed At The Junction Of Two Liquids?

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Glucose Molecule Reacts With X Number Of Molecules Of Phenyl Hydrazine To Yield Osazone. The Value Of X Is

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