examples frequently used tautology

A compound statement is said to be a tautology, if it is always true for all possible combinations of the truth values of its components. A tautology is also called a theorem or a logically valid statement patter..

The number that occurs most frequently in a data set is called ________. => median or mean or range or mode..

Uses of Sulphur - The most important use of sulphur is in the manufacture of sulphur compounds, such as sulphuric acid, sulphites, sulphates, and sulphur dioxide. Medicinally, it has assumed importance because of its widespread use in sulpha drugs and in many skin oint..

Venn diagrams are used very frequently on problems of set theory. Venn diagrams can also be used for deciding the truthfulness of statemen..

The appearance of new needs forces the organism to put in additional efforts to fulfil the need. It may become necessary for the organism to put a particular part of its body into more and more frequent use or less and less frequent use. This idea came to be..

Some halides of carbon find wide use in industry. For example, Carbon tetrachloride is used as a fire extinguisher under the name pyrene. Carbon tetrachloride is a common solvent for plastics, resins etc. Freon (CF 2 Cl 2 ) is used as a refrigerant. ..

1) Ammonium Sulphate is used as a fertiliser. 2) It is used in the preparation of alum. 3) It is used in the preparation of other ammonium salts. 4) It is used as a laboratory reage..

A simple microscope is used as a magnifying glass. It cannot be used to observe very tiny objects like bacteria and cells because of its low magnificati..

It has higher density, transparency and refracting power than ordinary glass. Hence used for making optical instruments. It is also used for ornament purpose..

1) The ammonium chloride salt is used for cleaning metal surfaces before soldering, tinning etc. The metal is first heated and rubbed with ammonium chloride. The ammonia formed removes grease, oil etc. and the hydrogen chloride removes the oxides of metals. 2) Ammonium chloride is u..