In the long form of the periodic table, elements are arranged to increase their Atomic number. The 18 vertical columns are named or numbered... View Article
The solubility of an ionic compound in water depends on the compound's lattice energy and ions' hydration energy. Lattice energy is defined as... View Article
Capillaries connect arteries to veins and help in the exchange of substances across cells. Capillaries are the smallest of blood vessels. They... View Article
Infectious diseases spread faster than non-infectious diseases. The diseases which spread due to infection by micro-organisms are called... View Article
Methane, the hydrocarbon is responsible for global warming. CFCs cause a hole in the ozone layer to be formed, while sulphur dioxide causes acid... View Article
If the plasma membrane ruptures or breaks down result in cell death. The main function of the plasma membrane is to protect the cell from its... View Article
Co-ordination compounds exhibit colour, attributed to the crystal field theory, corresponding to the d-d transition of elements. A coordination... View Article
In Biology, the basic unit of which all living things are composed is known as Cell It is the smallest structural unit of living matter that is... View Article
H2S + H2O2 → S + 2H2O The reaction manifests the oxidizing nature of H2O2 as it oxidizes S from -2 to 0 oxidation states. H2S is a reducing... View Article
The nitrogen-fixing bacteria are found in the roots of legumes in special structures called root nodules. Legume nitrogen fixation starts with... View Article
The induced current is the highest when the direction of motion of the coil is at right angles to the magnetic field. The induced current is... View Article
Variations help in coping up with the changes in the environment. Hence, variations promote the survival of the species. New species are formed... View Article
Dust can be removed out of a blanket using the law of inertia. Law of inertia also called Newton's first law, postulates in physics that if a... View Article
Zirconium or Titanium is refined by Van Arkel refining. Crude metal is heated with a suitable substance so that the pure metal present in it... View Article
Both give the same product (alkene) on reaction with alcoholic KOH. When the two halogen atoms are attached to the same carbon atom and are... View Article
In exothermic reactions, heat is given out, so the enthalpy of products is less than the enthalpy of the reactants, and the enthalpy change is... View Article