Category: TIFR Previous Year Question Papers 2019 Biology With Answer Key Download

10. Which of the following compounds does not undergo ozonolysis reaction? a. 3-methyl-1-butene b. 2,3-dimethyl-butane c. 2-methyl-2-butene d. 2-methyl-1-butene Answer: b. 2,3-dimethyl-butane Ozonolysis cleaves carbon-carbon double bonds in alkenes to […]

9. Which of the following amino acids is commonly used in catalysis by enzyme? a. Alanine b. Arginine c. Serine d. Methionine Serine is the correct answer (option c). Serine […]

8. For an endothermic reaction, where 𝛥𝐻 represents the enthalpy of the reaction in kJ/mol, the minimum value for the energy of activation will be: a. Less than 𝛥𝐻 b. […]

7. Among the following, the one that gives positive Iodoform test upon reaction with I2 and NaOH is: (A) (B) (C) (D) a. Molecule (A) b. Molecule (B) c. Molecule […]

6. A helium atom is heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is a. twice that of a hydrogen molecule b. […]

5. When a non-volatile solute is dissolved in a pure solvent, the difference between the freezing points of the solvent alone and the solution is a. positive b. negative c. […]

4. Which of the following molecules will have a dipole moment? a. CH4 b. NH3 c. CCl4 d. CO2 Which Molecules Have Dipole Moment: CH4, NH3, CCl4, CO2 Explained NH3 […]

3. Dinitrogen tetroxide (N2O4) breaks down into nitrogen dioxide (NO2). If the reaction is reversible and endothermic, which condition will give the largest yield of NO2? a. High temperature and […]

2. Which statement is true for the following chemical reactions? CuCO3 + heat à CuO + CO2 CuO + SnO à Cu + SnO2 a. CO2 is oxidized and SnO2 […]

1. Element Y has a nucleon number of 19 and a proton number of 9. Which group in the Periodic Table does it belong to? a. Group I b. Group […]