Class 12th

An oil drop of radius 2 mm with a density 3gcm?³ is held stationary under a constant electric field 3.55 * 10? Vm?¹ in the Millikan's oil drop experiment. What is the number of excess electrons that the oil drop will possess? Consider g = 9.81 m/s².

A soft drink was bottled with a partial pressure of CO? of 3 bar over the liquid at room temperature. The partial pressure of CO? over the solution approaches a value of 30bar when 44 g of CO? is dissolved in 1 kg of water at room temperature. The approximate pH of the soft drink is * 10?¹ /
(First dissociation constant of H?CO? = 4.0 * 10?; log 2 = 0.3; density of the soft drink = 1 g mL?¹)

The number of chiral carbon(s) present in peptide, lie-Arg-Pro, is

An oxidation - reduction in which 3 electrons are transferred has a ∆Gº of 17.37 kJ mol⁻¹ at 25°C. The value of E°cell (in V is _ * 10⁻²)(1 F = 96,500Cmol⁻¹)

The total number of coordination sites in ethylenediaminetetraacetate ( EDTA ?) is
(Coordination)

An Ellingham diagram provides information about:

How is the concept of temperature dependence used to generate high production by the industries?

The correct electronic configuration and spin - only magnetic moment (BM) of Gd³⁺ (Z = 64), respectively, are:

The values of the crystal field stabilization energies for a high spin d? metal ion in octahedral and tetrahedral fields, respectively, are:

Which of the following derivates of alcohol is unstable is an aqueous base?