Laboratory Manual (Science) Chemistry Class 9th
1. True Solution, Suspension and Colloid
To prepare :
(a) a true solution of common salt, sugar and alum.
(b) a suspension of soil, chalk powder and fine sand in water.
(c) a colloidal of starch in water and egg albumin/milk in water and distinguish
between them on the basis of
(i) transparency, (ii) filtration criterion, and (iii) stability.
2. Mixture and Compound
To prepare
(a) a mixture, (b) a compound.
Using iron filings and sulphur powder and distinguish between them on the basis of :
(i) appearance i.e., homogeneity or heterogeneity
(ii) behaviour towards a magnet
(iii) behaviour towards carbon disulphide (a solvent)
(iv) effect of heat.
3. To Study a Few Reactions
To carry out the following reactions and classify them as physical or chemical
changes :
(i) Iron with copper sulphate solution in water.
(ii) Burning of magnesium in air.
(iii) Zinc with dilute sulphuric acid.
(iv) Heating of copper sulphate.
(v) Sodium sulphate with barium chloride in the form of their solutions in water.
4. M elting Point of Ice and Boiling Point of Water
To determine the melting point of ice and boiling point of water.
5. Law of Conservation of Mass
To verify the law of conservation of mass in a chemical reaction.
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Laboratory Manual (Science) Physics Class 9th
1. Reflection of Sound
To verify the law of reflection of sound.
2. Determining the Density of a Solid
To determine the density of a given solid (denser than water) by using a spring balance and a measuring cylinder.
3. Archimedes’ Principle
To establish the relation between the loss in weight of a solid when fully immersed in
(i) tap water
(ii) strongly salty water, with the weight of water displaced by it by taking at least
two different solids.
4. Determining Velocity of a Pulse
To determine the velocity of a pulse propagated through a stretched string/slinky
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Laboratory Manual (Science) Biology Class 9th
1.1 Preparing Stained Temporary Mount of Onion Peel
To prepare stained temporary mount of onion peel, and to record observations and draw its labelled diagram.
1.2 Preparing Stained Temporary Mount of Human Cheek Cells
To prepare stained temporary mount of human cheek cells, and to record observations and draw its labelled diagram.
2. Plant and Animal Tissues
To identify parenchyma, collenchyma and sclerenchyma tissues in plants, striped, smooth, cardiac muscle fibres and nerve cells in animals from prepared slides and to draw their labelled diagrams.
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