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Q16. The CORRECT order of acidity of the following compounds is(A) II > I > III(B) II > III > I(C) III > II > I(D) III > I > […]

Q15. A solution of a compound shows an absorbance of 0.275 at 275 nm in a cuvette with 0.1 dm light path. The molar absorptivity (ε275 = 4 × 104 […]

Q14. The ground state energy of an electron in a hydrogen atom is –13.60 eV.The energy of the electron in the third excited state is _________eV(rounded off to two decimal […]

Q13. The time taken by a first order reaction to reach 90% completion is 20 s.The time taken for the reaction to reach 50% completion is ___________ s(rounded off to […]

Q12. The structure of the major product Q of the following reaction is Grignard reagents react with epoxides under dry conditions followed by hydrolysis to yield primary alcohols via ring-opening […]

Q.11 The geometry of Fe(CO)5 is(Given: Atomic number of Fe = 26)(A) pentagonal planar(B) square pyramidal(C) trigonal bipyramidal(D) trigonal pyramidal Fe(CO)₅ exhibits trigonal bipyramidal geometry due to its coordination number […]

Q.10 Six students P, Q, R, S, T and U, with distinct heights, compare theirheights and make the following observations.Observation I: S is taller than R.Observation II: Q is the […]

Q9. The number of units of a product sold in three different years and therespective net profits are presented in the figure above. The cost/unit in Year3 was ` 1, […]

Q.8 The number of students in three classes is in the ratio 3:13:6. If 18 studentsare added to each class, the ratio changes to 15:35:21.The total number of students in […]

Q.7 A jigsaw puzzle has 2 pieces. One of the pieces is shown above. Which oneof the given options for the missing piece when assembled will form arectangle? The piece […]