425 questions from a source that prints this span of years rather than the year of each question. Each opens with its answer and explanation.
ABC26OR0815 · The most basic amino acid among the following is · Natural Products & – General
ABC26OR0816 · Consider the following reaction: (D)-glucose [ cat. H+] Ph-NH-NH2 (3 equiv) X Among the following, the compound(s) whose osazone… · Natural Products & – General
ABC26OR0817 · Among the following the correct statement(s) is/are · Natural Products & – General
ABC26OR0818 · The maximum number of dipeptides that could be obtained by reaction of phenylalanine with leucine is · Natural Products & – General
ABC26OR0819 · The number of reducing sugars among the following is ____ · Natural Products & – General
ABC26OR0820 · The C-2 epimer of D-glucose is · Natural Products & – General
ABC26OR0821 · Tetrapeptide(s) that gives (give) the following product on reaction with Sanger's reagent followed by hydrolysis is(are) · Natural Products & – General
ABC26OR0822 · The complementary strand for the following single strand of DNA is 5 A-T-G-C-T 3 · Natural Products & – General
ABC26OR0823 · In the following reaction of (D)-Glucose, a product P is formed. (D)-Glucose [2.\ H2O2, Fe2(SO4)3]1.\ Br2/H2O P Among the following… · Natural Products & – General
ABC26OR0824 · The correct statement(s) among the following is/are · Natural Products & – General
ABC26OR0825 · Based on the information given below, the isoelectric point (pI) of lysine is ____ (Round off to one decimal place) · Natural Products & – General
ABC26OR0826 · The amino acid R configuration is · Natural Products & – General
ABC26OR0827 · The nucleobase NOT found DNA is · Natural Products & – General
ABC26OR0828 · The total number of head to tail isoprene linkages in the following molecule is · Natural Products & – General
ABC26OR0829 · The functional group (s) in reducing sugar that tests positive with Tollen's reagent is (are) · Natural Products & – General
ABC26OR0830 · Among the following, the total number of terpenes (terpenoids) is ____ . · Natural Products & – General
ABC26OR0831 · For the reaction shown below if the concentration of KCN is increased four times, the rate of the reaction will be : · Reaction Mechanism – I – General
ABC26OR0832 · Benzyl chloride is reacted with different nucleophiles shown below. Arrange them in the decreasing order of reactivity. Nucleophiles : HO… · Reaction Mechanism – I – General
ABC26OR0833 · The reaction of (+) 2-iodobutane and NaI * (I* is radioactive isotope of iodine) in acetate was studied by measuring the rate of… · Reaction Mechanism – I – General
ABC26OR0834 · Rationalize the following observations using suitable mechanism. · Reaction Mechanism – I – General
ABC26OR0835 · Write the products of the following reactions: (i) CH3 I+HO- (ii) CF3 I+HO- (iii) 2 CF3 I+Na [Mn(CO)5 ] · Reaction Mechanism – I – General
ABC26OR0836 · For the reaction + · Reaction Mechanism – I – General
ABC26OR0837 · Identify reagent (P) and write the structure of products ( Q, S and T ) in the following Identify the structures of the intermediate… · Reaction Mechanism – I – General
ABC26OR0838 · The optically pure ester [J] is hydrolysed in aqueous acetic acid to form a racemic mixture of cis-4, 4-dimethyl- 2-acetoxycyclopentanol… · Reaction Mechanism – I – General
ABC26OR0839 · The major product obtained in the following reaction. is · Reaction Mechanism – I – General
ABC26OR0840 · The major product obtained in the following reaction is · Reaction Mechanism – I – General
ABC26OR0841 · R(-) 2- Bromooctane on treatment with aqueous KOH mainly gives 2 -octanol that is: · Reaction Mechanism – I – General
ABC26OR0842 · The major product obtained in the following reaction is · Reaction Mechanism – I – General
ABC26OR0843 · Identify K and M in the following reaction sequence. · Reaction Mechanism – I – General
ABC26OR0844 · The reaction of the bromo compound shown below with sodium ethoxide gives predominantly · Reaction Mechanism – I – General
ABC26OR0845 · (being typed) · Reaction Mechanism – I – General
ABC26OR0846 · (being typed) · Reaction Mechanism – I – General
ABC26OR0847 · (question text unavailable) · Reaction Mechanism – I – General
ABC26OR0848 · The rates of acetolysis for the following norbornyl derivatives are in the order · Reaction Mechanism – I – General
ABC26OR0849 · The order of nucleophilicity of the following anions in a SN 2 reaction is: · Reaction Mechanism – I – General
ABC26OR0850 · In the following reaction scheme, write the structure of O, P and Q · Reaction Mechanism – I – General
ABC26OR0851 · Choose the correct stereoisomer between U and V that would furnish W on controlled hydrolysis. Write the stable conformation of W. · Reaction Mechanism – I – General
ABC26OR0852 · Write the structure of A to E in the following reaction sequence: ____ 41 · Reaction Mechanism – I – General
ABC26OR0853 · The structure of the major product in the following reaction is: · Reaction Mechanism – I – General
ABC26OR0854 · Which of the following statement(s) is/are true about the reaction given below? · Reaction Mechanism – I – General
ABC26OR0855 · The correct order of rate of solvolysis for the following compound is · Reaction Mechanism – I – General
ABC26OR0856 · The rate of solvolysis of I-IV follows · Reaction Mechanism – I – General
ABC26OR0857 · The rate of nitration of the following aromatic compounds decreases in the order (i) benzene (ii) pyridine (iii) thiophene (iv) toluene · Reaction Mechanism – Ii – General
ABC26OR0858 · The major product of the reaction · Reaction Mechanism – Ii – General
ABC26OR0859 · The major product (X) in the reaction (X) is: · Reaction Mechanism – Ii – General
ABC26OR0860 · The product of the reaction C6 H6+CO+HCl [ heat ]AlCl3 / Cu2 Cl2 gives positive test with Fehling's solution. The product is · Reaction Mechanism – Ii – General
ABC26OR0861 · Identify reagent (P) and write the structure of products (Q, R, S and T) in the following series of the reactions. 6. Suggest a method for… · Reaction Mechanism – Ii – General
ABC26OR0862 · Suggest a method for the following transformation involving minimum number of steps Indicate the reagents/reaction conditions required at… · Reaction Mechanism – Ii – General
ABC26OR0863 · Account fot the following transformation with an appropriate mechanism. Give the structure of the Hoffmann exhaustive methylation product… · Reaction Mechanism – Ii – General
ABC26OR0864 · The major product of the following reaction + · Reaction Mechanism – Ii – General