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Q.18 One mole of an ideal gas expands isothermally and reversibly to double its volume. If the expansion work done by the system is 1728.85 J, the temperature of the […]

Q.17 The maximum number of electrons that can be accommodated in the shell withn = 2 is ________ (in integer).(Given: n = principal quantum number) The maximum number of electrons […]

Q.16 The CORRECT option(s) of Y for the following reaction is/are The correct option for Y is the aldehyde (A), while (B), (C) and (D) do not give 2,4‑dinitrophenylhydrazone as […]

Q.15 The molecules A and B are a pair of ____________.(A) enantiomers(B) diastereomers(C) conformational isomers(D) constitutional isomers The molecules A and B are a pair of conformational isomers (more specifically, atropisomers caused […]

Q.14 The CORRECT order of acidity of the following compounds is(A) I > II > III(B) II > III > I(C) I > III > II(D) III > II > […]

Q.13 Among the following, the structure representing histidine is Correct answer The correct structure representing histidine is option (C), which shows an imidazole ring attached via a –CH₂– group to […]

Q.12 Which one of the following is the CORRECT representation of the variation of theGibbs free energy (G) of a substance with temperature (T) at constant pressure? Introduction For a […]

Q.11 The CORRECT order of electronegativity is(A) Al > Si > P > S(B) Al > S > Si > P(C) S > Si > Al > P(D) S > […]

Q.10 In the 4 × 4 array shown below, each cell of the first three rows has either across (X) or a number.The number in a cell represents the count […]

Q.9 A cube is to be cut into 8 pieces of equal size and shape. Here, each cut should bestraight and it should not stop till it reaches the other […]