The nitrate ion brown ring test is a qualitative test that verifies the presence of nitrate ion. A freshly produced ferrous sulphate solution is... View Article
According to Raoult's law, the partial vapour pressure of each component in a mixed solution is proportional to the pure component's vapour... View Article
Freon-12 is made by CCl4 by the Swart's reaction, as shown below: 3CCl4 + 2SbF3 ⟶ 3CCl2F2(Freon−12) + 2SbCl3 Swarts’ reaction is generally used... View Article
Temperature coefficient is the ratio of rate constant of a reaction at a temperature and rate constant of the reaction when the temperature... View Article
Sulphide ores containing less electropositive metals such as Cu, Hg, Pb, and others are heated in the presence of air in the auto reduction... View Article
Ozonolysis is a chemical process in which ozone causes the oxidative breakage of an unsaturated bond in a molecule. The final result will be an... View Article
The capacity of an element to establish chemical bonds by attracting an electron is measured by electronegativity. The capacity of an atom to... View Article
Answer: (c) Metallic character Along a period the electropositive character decreases, therefore the ionization energy, electron affinity and... View Article
According to the concept of freezing point depression whenever a solute is added to a pure solvent, the freezing point of the solvent (which is... View Article
Answer: (a) The nucleophilic substitution process produces diethyl ether. Diethyl ether is generated by the dehydration of one of the ethanol... View Article
Answer: (a) Carbohydrates The biuret test is a synthetic method for determining whether peptide bonds exist. In an alkaline solution, a... View Article
The metallic character of the elements is highest at the extremely left (low ionisation energies) and then decreases across the period from left... View Article
A sigma bond is the strongest covalent chemical link. They're made up of atomic orbitals colliding in a head-on collision. Sigma bonding is best... View Article
The low- grade ore from which copper is to be recovered goes through a leaching procedure first. The process of leaching is the extraction of a... View Article
In an SN1 reaction with the OH- ion, C6H5— CH2— Cl will react quicker. This is owing to the carbocation's stability in the compound. The C6H5... View Article
The halogens are fluorine, chlorine, bromine, and iodine. They are members of Group 17, commonly known as the halogen group. These halogens are... View Article
Answer: (d) The hydrogen is the element with atomic number 1 . An atom consists of energy levels like electronic, vibrational, rotational and... View Article
Cupellation is based on the idea that noble metals do not oxidise and are chemically inert. When noble metals are heated to high temperatures,... View Article
Answer: b) NaOH Acetone has a chemical formula (CH3)2CO . It is also known as propanone or dimethyl ketone and it is the smallest and the... View Article
Answer: (A) Xenon is an atom with the atomic number 54 and the symbol Xe in the modern periodic table. It's a noble gas that exists in trace... View Article
