265 questions from a source that prints this span of years rather than the year of each question. Each opens with its answer and explanation.
ABC26IN0775 · The number of CO stretching bands in the infrared spectrum of Fe(CO)5 is · Organometallics – General
ABC26IN0777 · For Na+, Mg2+, Al3+ and F-, the CORRECT order of ionic radii is · Periodic Properties – General
ABC26IN0778 · Two sets of quantum numbers with the same number of radial nodes are · Periodic Properties – General
ABC26IN0779 · With respect to periodic properties, the CORRECT statement is · Periodic Properties – General
ABC26IN0781 · The correct order of the boiling points of the compounds is · Periodic Properties – General
ABC26IN0782 · Among the following, the compound that has the lowest degree of ionic character is · Periodic Properties – General
ABC26IN0784 · The energy of an electron in a hydrogenic atom with nuclear charge Z varies as: · Periodic Properties – General
ABC26IN0785 · Among the following, the element having maximum inert pair effect is [Given: Atomic number of Ge = 30, Pb = 82, Si = 14 and Sn = 50] · Periodic Properties – General
ABC26IN0787 · The correct order of acidic character is: · Periodic Properties – General
ABC26IN0788 · Among lithium, nitrogen, carbon and oxygen, which element has the highest first ionization potential? · Periodic Properties – General
ABC26IN0790 · The acceptable valence shell electronic arrangement is: · Periodic Properties – General
ABC26IN0791 · Identify the correct option: In the periodic table, on moving from left to right along a period, · Periodic Properties – General
ABC26IN0792 · The correct order of the mean bond energies in the binary hydrides is: · Periodic Properties – General
ABC26IN0793 · The correct order of the ionic radii is: · Periodic Properties – General
ABC26IN0795 · The decreasing order of the first ionization energy of the following element is · Periodic Properties – General
ABC26IN0796 · The decreasing order of ionic nature of the following compound is: · Periodic Properties – General
ABC26IN0797 · The compound having the highest melting point is: · Periodic Properties – General
ABC26IN0798 · The decreasing order of the first ionization energy of the following elements is: · Periodic Properties – General
ABC26OR0771 · Arrange the following in the decreasing order of acidity of the hydrogen indicated in italic (i) CH3 COCH3 (ii) CH3 COCH2 COCH3 (iii) CH3… · Acidity Basicity
ABC26OR0773 · The value of 'n' for the following molecule according to Huckel's rule is · Aromaticity
ABC26OR0775 · The correct statement describing the relationship between · Inductive Resonance Effects
ABC26OR0776 · Which of the following are aromatic? P Q R S · Aromaticity
ABC26OR0777 · Arrange the following in the correct order of acidity of the hydrogen indicated in bold. P Q R · Acidity Basicity
ABC26OR0780 · Electrophilic nitrations of the following compounds follow the trend P Q R S · General Organic Chemistry – General
ABC26OR0782 · The Correct order of stability of the following carbonium ions is (I) (II) (III) · Carbocation Stability
ABC26OR0783 · The homolytic breaking of the Ca-Cb bond is easiest in: · General Organic Chemistry – General
ABC26OR0785 · The correct order of the pKa values for the conjugate acids of heterocyclic compounds given below is (I) (II) (III) (IV) · Acidity Basicity
ABC26OR0786 · Among the following, the number of molecules that are aromatic is ____. · Aromaticity
ABC26OR0787 · The correct order of pKa for the following compounds is (I) (II) (III) (IV) · Acidity Basicity
ABC26OR0790 · The compound that contains the most acidic hydrogen is · Acidity Basicity
ABC26OR0791 · The correct order of stability for the following carbocations is I II III IV · Carbocation Stability
ABC26OR0792 · DNA Ba(OH)2 (P) ↓ MgO/ Delta PO43- + (Q) HCl (R) + (S) + sugar In the scheme shown above (P), (Q), (R) and (S) are · Natural Products & – General
ABC26OR0793 · Match the isoelectric point with the amino acids. · Natural Products & – General
ABC26OR0795 · The complementary strand of DNA for the following single stranded DNA sequence, 5′–A–T–C–A–T–G–C–3′ is · Natural Products & – General
ABC26OR0798 · The structure of D-galactose is Which one of these structures is L-galactose? · Natural Products & – General
ABC26OR0800 · Calculate the isoelectric point (p.I.) of lysine, given the pKa of alpha.NH3 is 8.95, pKa of side chain NH3 is 10.53 and pKa of alpha.COOH… · Natural Products & – General
ABC26OR0801 · The absolute configurations at the two chiral centers in D-Ribulose are · Natural Products & – General
ABC26OR0802 · The correct relationship within each pair of the natural products is: · Natural Products & – General
ABC26OR0803 · The INCORRECT statement in the following is: · Natural Products & – General
ABC26OR0804 · The Haworth projection for alpha -anomer of D-glucose is · Natural Products & – General
ABC26OR0805 · The complementary DNA sequence of the given DNA 5'-G-A-A-T-T-C-3' is: · Natural Products & – General
ABC26OR0807 · alpha -Farnesene shown below is a · Natural Products & – General
ABC26OR0810 · Which one of the following statements is Correct? · Natural Products & – General
ABC26OR0811 · Tollen's test will be negative for: · Natural Products & – General
ABC26OR0813 · Specific rotations of freshly prepared aqueous solutions of I and II are +112 and +18.7, respectively. On standing the optical rotation of… · Natural Products & – General
ABC26OR0814 · The pKa values of lysine are 2.18, 8.95 and 10.79. The isoelectric point of lysine is ____ IIT JAM 2016 · Natural Products & – General
ABC26OR0815 · The most basic amino acid among the following is · 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