Question
Polymorphism of fats refers to :
The correct answer is
Ability to exist in different crystalline forms
Polymorphism Definition in Fats
Polymorphism refers to the ability of a solid material to exist in more than one crystalline structure or form. These different forms are called polymorphs.
Understanding Fat Polymorphism
In the context of fats and lipids, polymorphism specifically relates to their capacity to crystallize in various distinct structural arrangements. These different crystalline forms (e.g., alpha, beta-prime, beta) impact the physical properties of the fat, such as melting point, texture, and stability.
Analysis of Options
- Lipid oxidation: This is a chemical process involving the degradation of fats by oxygen, leading to spoilage. It is not related to crystalline structure.
- Presence of trans fats: Trans fats are a type of unsaturated fatty acid with a specific chemical structure (double bond in the trans configuration). While they affect fat properties, their presence itself is not polymorphism.
- Ability to exist in different crystalline forms: This is the correct definition of polymorphism as applied to fats. Fats can arrange themselves into multiple crystal lattices depending on factors like cooling rate and composition.
- Emulsification behaviour: This describes how fats interact with water and other liquids, related to their ability to form emulsions. It is a functional property, not a structural one related to polymorphism.
Therefore, polymorphism of fats specifically refers to their ability to form different crystal structures.
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Important Questions from Miscellaneous
- Which of the following relationships is/are not true?
(A). Most probable velocity = $\sqrt{\frac{2RT}{M}}$
(B). PV = $\frac{3}{2}kT$
(C). Compressibility factor Z = $\frac{pV}{nRT}$
(D). Average kinetic energy of gas = $\frac{1}{2}kT$
Choose the correct answer from the options given below - Match List-I with List-II
List-I List-II Electronic Configuration First Ionisation energy (kJ mol$^{-1}$) (A). ns$^2$ (I). 2100 (B). ns$^2$np$^1$ (II). 1400 (C). ns$^2$np$^3$ (III). 800 (D). ns$^2$np$^6$ (IV). 900
Choose the correct answer from the options given below: - The shielding constant of a 2p electron (calculated using Slater's rules) is
- Match List-I with List-II
List-I List-II Spectroscopy Property (A). Raman (I). Polarizability (B). FTIR (II). Dipole Moment (C). UV-Visible (III). Absorbance (D). NMR (IV). Spin
Choose the correct answer from the options given below: - The structure of protein comprises of:
(A). Primary structure of protein is associated with amino acids
(B). Secondary structure of protein is associated to peptides
(C). Tertiary structure of protein is associated with polypeptide chains
(D). Quaternary structure of protein is associated with polypeptide chains
Choose the correct answer from the options given below:
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