Tag: GATE Life Science Previous Year Papers with Solutions

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 […]

Q.17 For a particular reaction, the use of a catalyst reduces the activation energy (Ea) to one-third its original value. The ratio of rate constants (kcatalyzed / kuncatalyzed) is: 1 […]

Q.16 Consider the following equilibrium reaction: CO (g) + Cl2 (g) ⇌ COCl2 (g) 0.60 atm of CO and 1.10 atm of Cl2 were mixed in a constant volume reaction […]

Q.15 The compound that is aromatic, among the choices, is: Determining which compound is aromatic is a very important concept in Organic Chemistry. Aromatic compounds show extra stability due to […]

Q.13 Molecule that has no lone pair of electrons on the central atom (among the choices) is: XeF4 PF3 ClF3 BF3 BF3 No Lone Pairs Central Atom XeF4 PF3 ClF3 […]