common laboratory apparatus

Laboratory Preparation of Oxygen - Any of the above mentioned methods could be used to prepare oxygen in the laboratory. Mercuric and silver oxides are not used for the preparation of oxygen, as they are very expensive. For the laboratory preparation of oxygen from any..

By treating sodium sulphite or bisulphite with dilute sulphuric acid or hydrochloric acid - The apparatus is set up as shown in figure 7.1. Sodium sulphite or bisulphite is taken in a round bottom flask. Dilute sulphuric or hydrochloric acid is added through the dropping funnel and heated..

This balance consists of a beam and two scale pans (shown in figure below), the beam being balanced at its mid point on a knife-edge. The scale pans also hang on knife edges and rest on the base board. When the balance is not in use the beam rests on the beam support...

Clinical, antigen test, PCR Syphilis Trepanema pallidum Antibody detection e.g., VDRL (Veneral Disease Research Laboratory) Chancroid Haem ophilus ducrei Clinical, culture Genital warts Human palilloma virus (HPV) Clinical, antibody detection, culture, DNA hybri..

As the theory of chemical evolution started gaining more support, investigations were initiated by several scientists to establish the conditions under which, the simplest organic compounds were formed in the primitive earth. Two scientists, Stanley Miller and Harold Urey were the first to put to t..

Sand soaked with kerosene is taken in hard glass test tube. The test tube is clamped horizontally to a clamp stand Broken pumice is placed at the other end of the test tube. The apparatus is assembled as shown in the figure. The burner is lighted and the test tube is heated ..

Formula of Sulphur Trioxide: SO 3 Relative Molecular Mass: 80 Sulphur trioxide is prepared by the catalytic oxidation of sulphur dioxide. To prepare it, set up an apparatus as shown in figure 7.9. Dry sulphur dioxide and dry oxygen are sent into a combustion tube. The combustion tube cont..

The term growth is applied to several things and situations. It is quite common to hear people referring to growth of cities, the weeds, of tradition or even of indiscipline. You would have observed the growth of crystals or salt in the laboratory, but it is of non-living ..

Introduction - The term growth is applied to several things and situations. It is quite common to hear people referring to growth of cities, the weeds, of tradition or even of indiscipline. You would have observed the growth of crystals or salt in the laboratory, but it is of no..

By Heating any Ammonium Salt with an Alkali - In the laboratory, ammonia is usually prepared by heating a mixture of ammonium chloride and slaked lime in the ratio of 2 : 3 by mass. The arrangement of the apparatus is shown in the figure 6.2. As ammonia is lighter than air, it i..