Laboratory Manual – Science Fig. 1 : A physical balance Fig. 2 : A compound microscope • Electrical connections must be provided with all working tables for performing electricity and magnetism experiments. • Utility items like soldering rod, hammer, drill machine with drill bits, pliers, hacksaw, cutter, screw driver set, spanners, torchlight etc. must be placed at a convenient place inside the laboratory. Common electrical measuring devices such as a multimeter may also be placed. • A demonstration table is relevant for teacher demonstration. • For the purpose of disposal of solid waste, a dustbin may be provided either near each working table or at a common place in the laboratory. Introduction Petridish Trough Woulfe’s bottle Coverslip Plastic squeeze bottle Round bottom (wash bottle) flask Bar Magnet Convex lens Concave mirror Thermometer BeakersSlide Extension clamp Delivery tube RingBoiling tube Test tube holder clampTest tube Measuring cylinder Crucible tongs Wire gauze H-base burner Forceps Tripod stand Laboratory stand Galvanometer Sprit lamp Rheostat Test tube Magnifying lens brushes Stopwatch Laboratory Manual – Science reagent bottles. Partially used material should not be poured back into the reagent bottles. • The mouth of the test tube should not be pointed towards any pupil including you while heating or adding a reagent (Fig. 4). Fig.4 : Correct method of heating a boiling tube and to know the smell (or odour) • For smelling the vapours, fan the vapours gently with your hands towards the nose (Fig. 5). Avoid direct smelling of chemicals or vapours. Fig.5 : Correct way of adding acid to water for dilution

RELOAD if chapter isn't visible.