4AB › Chemistry PYQ › CSIR NET › June 2021

1. Q31 — For the cell Cd |CdCl₂ | AgCl | Ag; Ecell o=0.675 V and dEcell o / dT=-6.5 × 10⁻⁴ VK⁻¹ at 27° C. The Δ H (kJ · Electrochemistry
2. Q32 — For weak electrolyte like acetic acid, the relation among conductance (λ), equilibrium constant (K) and · Electrochemistry
3. Q33 — The amount of Ba (NO₃)₂ (molecular weight 261.32 amu) required to be added to 500 g of a 0.11 mol kg⁻¹ · Electrochemistry
4. Q35 — The rate constant for the reaction A₂ B₄ O → AB₄+AO, is described as, log k=14.1-10000 K/T the activation · Chemical Kinetics
5. Q36 — The rate of decomposition of a gas is 10 mM s⁻¹ when 10% is reacted and it is 5 mM s⁻¹ when 40% is reacted · Chemical Kinetics
6. Q37 — For a person weighing 70 kg the minimal volume (in mL) of a fatal dose of a compound with LD₅₀=80 mg. kg⁻¹ · Chemical Kinetics
7. Q39 — The correct statement from the following set (i) to (iv) is (i) if q is the displacement from equilibrium for · Molecular Spectroscopy
8. Q41 — The molecule that will not absorb in the microwave region, but will absorb in the infra-red region · Molecular Spectroscopy
9. Q46 — For a micro-canonical system, the correct probability distribution function for energy is given by · Statistical Thermodynamics
10. Q48 — In a Langmuir-type adsorption, a solid adsorbs 0.25 mg of a gas when the pressure of the gas is 50 bar and · Surface Chemistry
11. Q49 — Liquid A has half the surface tension and twice the density of liquid B at 30° C. The contact angles of A and · Surface Chemistry
12. Q50 — The maximum number of phases that can be simultaneously in equilibrium for a one component system is · Thermodynamics
13. Q51 — When yellow phosphorous is converted to red phosphorous, the entropy and volume of the system do not change · Thermodynamics

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