Related InterviewSolutions

• Which of the following is the major solute species in a solution of alanine at `pH=2` ?A. B. C. D.
• Which of the statement is incorrect.A. Fructose on reduction with `NaBH_(4)` gives only one product.B. Solubility of amino acid at its isoelectric point is minimum.C. Guanidline is more basic than diethyl amineD. Mutarotation is observed in the aqueous solution of glucose.
• The incorrect structure of glycine at given `pH` are `:`A. `H_(3)overset(o+)(N)CH_(2)-underset(underset(O)(||))(C)-OH" at"pH=2.0`B. `H_3overset(o+)(N)CH_(2)-underset(underset(O)(||))(C)-O^(ɵ)" at "pH=6.0`C. `H_(2)NCH_(2)-underset(underset(O)(||))(C)-O^(ɵ)" at "pH=9`D. `H_(2)NCH_(2)-underset(underset(O)(||))(C)-OH" at "pH=12`
• Which of the structure represent methyl `alpha -D-` galactopyranoside ? A. aB. bC. cD. d
• The above process in which `alpha` and `beta` form remain in equilibrium with acyclic form and a change in optical rotation is observed which is known as`-`A. MutarotationB. EpimerisationC. Saccharic acidD. Gluconic acid
• What is the complementary `m-RNA` sequence for the DNA segment AATCAGTT?A. AAUCAGUUB. CCAUCGAAC. AACUGAUUD. UUAGUCAA
• Which of the following is vitamin A ?A. B. C. D.
• Which two of the following compounds, if any, are epimers ? A. `1 & 4`B. `1&3`C. `2&3`D. `3&4`
• An amino acid is characterized by two `pKa` values the one corresponding to the more acidic site is designated as `pKa_(1)` and the other corresponding to the less site is designated as `pKa_(2)`. Some amino acids have side chain with acidic or basic groups. These amino acids have `pKa_(3)` value also for the side chain. `|{:(S.No,"Amino acid",P^(Ka1),P^(Ka2),P^(Ka3)" (Side chain)"),(I,"Aspartic acid",1.88,9.6,3.65),(II,"Glutamic acid",2.19,9.67,4.25),(III,"Lysine",2.18,8.95,10.53),(IV,"Arginine",2.17,9.04,12.48):}|` The isoelectric point `(pI)` of Aspartic acid and lysine will be respectively `:`A. `6.62 & 9.74`B. `2.77 & 5.6`C. `2.77 & 9.74`D. `9.74 & 6.62`
• Product P & Q may be grouped as A. DiastereomersB. EnantiomersC. AnomersD. None of these