Tag: GATE Life Science Previous Year Papers with Solutions

Q.27 The activation of the complement components occurs via three distinct pathways. Which of the following component(s) is specific to the Alternate Pathway? Options: (A) Factor B and D (B) […]

Q.26 Which one of the following DOES NOT inhibit protein biosynthesis? Options: (A) Puromycin (B) Chloramphenicol (C) Cycloheximide (D) Oligomycin Protein biosynthesis inhibitors target translation at ribosomes, crucial for antibiotic […]

Consider the reaction (CH3)(C2H5)(C6H5)C–Br+  KOH (aq)→ (CH3)(C2H5)(C6H5)C–OH Q.25 If the concentration of KOH in the reaction mixture is doubled, the rate of the reaction will be Options: (A) decreased to […]

Consider the reaction (CH3)(C2H5)(C6H5)C–Br+  KOH (aq) → (CH3)(C2H5)(C6H5)C–OH Q.24 The above reaction is an example of Options: (A) addition reaction (B) bimolecular elimination reaction (E2) (C) unimolecular substitution reaction (SN1) […]

The solubility products of FeS, ZnS, CuS and HgS are 1.0 × 10−19, 4.5 × 10−24, 4.0 × 10−38 and 3.0 × 10−53 respectively. Q.23 The concentration of S2−, at […]

The solubility products of FeS, ZnS, CuS and HgS are 1.0 × 10−19, 4.5 × 10−24, 4.0 × 10−38 and 3.0 × 10−53 respectively. Q.22 H2S is passed through an […]

Q.21 The ions with lowest and highest radii among O2−, F−, Na+ and Mg2+ are respectively, Options: (A) Mg2+ and O2− (B) O2− and F− (C) O2− and Mg2+ (D) […]

Q.20 According to crystal field theory, the electronic configuration of [Ti(H2O)6]3+ in the ground state is Options: (A) eg1 t2g0 (B) t2g0 eg1 (C) eg0 t2g1 (D) t2g1 eg0 Electronic […]

Q.19 According to the molecular orbital theory, bond order for H2+ species is Options: (A) 0.5 (B) 1.0 (C) 1.5 (D) 2.0 Bond Order of H2+ – Molecular Orbital Theory […]

Q.18 A molecular electronic excited state has a lifetime of 10−9 s. The uncertainty in measuring the frequency (Hz) of the electronic transition is approximately Options: (A) h⁄4π × 109 […]