Laboratory Container Apparatus

Basic information about Common Laboratory Apparatus

Apparatus used as container in the Laboratory:

1. Beaker – this is used to dissolve, mix and heat liquids in large amounts.
2. Test Tube – this is used as a reaction vessel for experiments involving small amounts of reactants.
3. Flask 200 ml – this is used as a reaction vessel and sometimes as a gas generator and to hold liquid or solutions which are to be heated.
4. Volumetric Flask – this is used for diluting and preparing accurate volume of solution.
5. Evaporating Dish – this is used to evaporate the liquid from a solution leaving a solid material.
6. Watch Glass – this is used for spontaneous evaporation for liquids and as a container for weighing.
7. Mortar and Pestle – this is used for grinding solids to a powder form.
8. Crucible – this is used for high temperature ignition.

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Laboratory Heating Apparatus

Apparatus Used For Heating In The Laboratory:

1. Bunsen burner – this is used as a source of heat in the laboratory.
2. Pipe Stem or Clay Triangle – this is used to support the crucible while heating.
3. Wing Top or Fish Tail – this is placed over the barrel of a burner to spread the flame.
4. Wire Gauze or Asbestos Pad – this is used to separate beaker and flask from direct heat of the burner. 

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Laboratory Holding Apparatus

Apparatus used for holding and holding things in the Laboratory:

1. Clamps – this is used to support test tubes, flasks, burets, etc.
2. Clamp Holder – this is used to hold clamp in its proper position.
3. Funnel – this supports the filter paper and facilitates the introduction of liquid to prevent spilling.
4. Iron Ring – this is mounted on an iron stand to support beakers, flasks, etc.
5. Iron Stand or Ring Stand – this is used to mount apparatus.
6. Test Tube Holder – this is used to hold test tube while heating and when working with corrosive reagents.
7. Tripod – this is to support apparatus which does not have to be attached.
8. Test Tube Rack – this is used to keep a supply of test tubes for use.

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Laboratory Measuring Apparatus

Basic information about Common Laboratory Apparatus

 

Apparatus used as container in the Laboratory:

1. Beaker – this is used to dissolve, mix and heat liquids in large amounts.
2. Test Tube – this is used as a reaction vessel for experiments involving small amounts of reactants.
3. Flask 200 ml – this is used as a reaction vessel and sometimes as a gas generator and to hold liquid or solutions which are to be heated.

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The Computer

Basic information About Computer

Computer

Computer is a programmable machine. The two principal characteristics of a computer are:

• It responds to a specific set of instructions in a well-defined manner. 
• It can execute a prerecorded list of instructions (a program).

 

Modern computers are electronic and digital. The actual machinery -- wires, transistors, and circuits -- is called hardware; the instructions and data are called software.

All general-purpose computers require the following hardware components:

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