Все публикации

0:00:50

Determination of the number of radial nodes in the 4d orbital. #chemistry

0:01:43

OQV NO – 344 How many π electrons are in the cycloheptatrienyl anion?

0:00:43

Transformation of the 2-propanol to 1-propanol. #chemistry

0:02:09

OQV NO – 343 Calculate the radius of the 2 nd Bohr orbit of Li2+ ion.

0:00:28

Determination of the number of geometrical isomers possible for the complex [PdCl2BrI]2- #chemistry

0:01:36

OQV NO – 342 Calculate the OH- ion concentration in a solution whose pOH is 9.

0:00:41

The reaction of but-2-ene with warm and alkaline KMnO4 in the presence of KOH. #chemistry

0:01:06

OQV NO – 341 Stereoisomerism (optical isomerism) of the compound CH3-CHBr-CHBr-COOH.

0:00:40

Minerals of copper (Cu) such as chalcopyrite cuprite chalcocite malachite and azurite. #chemistry

0:01:10

OQV NO – 340 What happens when NH4Cl is heated with Ca(OH)2.

0:00:45

Aliphatic transformation [acetic(CH3COOH) acid to malonic acid(HOOC-CH2-COOH)]. #chemistry

0:00:43

OQV NO – 339 What is the dispersion medium and dispersed phase in foams?

0:00:24

The crystal system is tetragonal with an axial ratio of (a= b≠c) and axial angles of (α=β=γ=900).

0:01:14

OQV NO – 338 What monomer units are present in Buna-N or NBR or nitrile rubber?

0:00:52

The reaction of acetone (CH3-CO-CH3) with Grignard reagent (CH3MgBr). #chemistry

0:00:53

OQV NO – 337 For the nuclear reaction (5B10 + 0n1 → X + 2He4) what is X?

0:00:25

The orthorhombic crystal system [axial ratio (a ≠ b ≠ c) and axial angle (α = β = γ = 900)].

0:01:58

OQV NO – 336 Calculate the value of d110 for a metal that crystallises in fcc lattice with a=4.08A0

0:00:18

Monomers of nylon-2-nylon-6 or nylon 26. #chemistry

0:02:16

OQV NO – 335 Benzene reacts first with CH3Cl and then with KMnO4 and KOH.

0:00:16

An isolated system (one of the thermodynamic systems). #chemistry

0:02:02

OQV NO – 334 The order of the covalent character of the NaCl MgCl2 and AlCl3.

0:00:42

Determination of the number of π electrons present in the cycloheptatrienyl anion. #chemistry

0:03:27

OQV NO – 333 Calculate the Boyle temperature of the gas whose a=2.44 atmL2mol-2 and b=0.029 Lmol-1