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Q.43 Among i–BuNH2, NH3, Me2NH, EtNH2, the number of compound(s) more basic thanMeNH2 is/are _______. Two compounds are more basic than MeNH₂. The question asks for the number of compounds […]

Q.42 The number of possible unique combination(s) of linear tetrapeptides that can bemade from four different amino acids using each amino acid only once in the chainis/are _______. Linear tetrapeptides […]

Q.41 The net number of molecule(s) of NADH formed from one molecule of glucose inglycolysis under aerobic conditions is/are _______. Net NADH molecules from one glucose in glycolysis under aerobic […]

Q.40 Which of the given statement(s) about synthetic oligonucleotides is/are correct?(A) Chemical synthesis extends the DNA chain from 3 ́→5 ́end(B) They can be utilized for site–directed mutagenesis(C) Chemical synthesis […]

Q.39 Hyperventilation (breathing rapidly and deeply) causes which of the followingevent(s) in the arterial blood?(A) Decrease in CO2 concentration(B) Decrease in proton concentration(C) Increase in pH(D) Increase in O2 concentration […]

Q.38 Different segments of a photosynthetic filamentous alga are exposed to differentwavelengths of light as shown below. After a period of time, bacteria known tomigrate towards high oxygen concentration, is […]

Q.37 Which of the following option(s) represent(s) the evolutionary relationshipbetween the bird and bat wings as structures for flying?(A) analogous(B) convergence(C) divergence(D) homologous Bird and bat wings represent analogous structures […]

Q.36 Which of the following is/are essential feature(s) of high–fidelity DNA polymerasesused in polymerase chain reaction?(A) 5 ́→3 ́ exonuclease activity(B) Endonuclease activity(C) 3 ́→5 ́ exonuclease activity(D) Optimum temperature […]

Q.35 Which of the following statement(s) is/are correct for the following compound?(A) It can have a maximum of four stereoisomers(B) It can have a maximum of two stereoisomers(C) It is […]

Q.34 Which of the following compound(s) is/are aromatic? The aromatic compounds in this question are options (B) and (D); options (A) and (C) are non‑aromatic.​​ Introduction Aromaticity questions are common in competitive exams, and understanding which cyclic […]