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Q27. In tryptophan operon, tryptophan acts as (A) Repressor (B) Activator (C) Co-repressor (D) Co-activator Correct Answer: (C) Co-repressor Tryptophan serves as a co-repressor in the trp operon, binding to […]

Q.26 Nucleolus is involved in the synthesis of (A) rRNA (B) tRNA (C) DNA (D) mRNA Answer: (A) rRNA The nucleolus is the site of ribosomal RNA (rRNA) synthesis within the […]

Reaction Sequence Problem Q.25 The structure of Y in the above reaction sequence is: (A) Structure A (B) Structure B (C) Structure C (D) Structure D Structure of Y in […]

Reaction Sequence Problem Q.24 The structure of X in the above reaction sequence is: (A) Structure A (B) Structure B (C) Structure C (D) Structure D  Introduction In this reaction […]

The ionization constants of phosphorous acid (H3PO3) are: Ka1 = 3 × 10−2, Ka2 = 1.7 × 10−7 Q.23 The structure of phosphorous acid is: O || HO — P […]

The ionization constants of phosphorous acid (H3PO3) are: Ka1 = 3 × 10−2, Ka2 = 1.7 × 10−7 Q.22 For a dilute solution of phosphorous acid in a pH 5 […]

Q.21 Reaction of Na2SO3 with 2 equivalents of HCl produces a gas X. Solution of X in water is acidic in nature. X is: O2 Cl2 SO2 O₂: Oxygen gas […]

Q.20 The ionization energy follows the order: O2+ > O2 > O2− > O22− O2 > O2+ > O22− > O2− O2 > O2− > O2+ > O2 O22− > […]

Q.19 Structure of the compound Y in the following reaction sequence is: Cyclohexene →(Br2 / AcOH)→ X →(KOtBu)→ Y Bromocyclohexene Cyclohexene 1,3-Cyclohexadiene Benzene Structure of Compound Y in Bromination and […]

Q.18 Among heptan-1-ol, heptan-2-ol, heptan-3-ol and heptan-4-ol, compounds those exhibit optical activity are: heptan-2-ol and heptan-3-ol heptan-2-ol and heptan-4-ol heptan-3-ol and heptan-4-ol heptan-1-ol and heptan-4-ol   Optical Activity in Heptanol […]