different 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..

General Preparation of Salts - Salts are generally ionic compounds formed by the reaction of an acid with a base. The preparation of these salts involves the treating of different metals and non-metals and their compounds with various acids, bases etc. However, some of them can be prepare..

="left"> Vacuoles are large and prominent. May be one or more Plastids are absent Plastids are usually present Centrosome is present Centrosome is absent. Instead two small clear areas called polar caps are present Prominent and highly complex Golgi bodies present near nucleus Contain several sub u..

is a transplant between animals of different species. This is used when human grafts are not available. It is mostly done in laboratory animal..

Experimental Evidence - 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 we..

It is a simple pressure gauge and it measures differences in pressure exerted at the two ends of the apparatus. It is called manometer. The mouth of a thistle funnel is tightly covered with a thin plastic shee..

When coal is heated without air, it does not burn but produces many by-products. This process of heating coal in the absence of air is called destructive distillation of coal. The main by products are: coke coal tar amino acid liquor coal gas The destructive distillation of coal can be carried out ..

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 gently. SO 2 vapors get displaced upwards and are passed into a jar containing concen..

Some Basic Features of Sulphur Trioxide - 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..