1.
To test (a) the presence of starch in the given food sample, (b) the presence
of the adulterant metanil yellow in dal.
2.
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 solution of starch in water
and egg albumin/milk in water and distinguish between these on the basis
of
- transparency
- filtration criterion
- stability
3.
To prepare
- a) a mixture
- b) a compound
using
iron filings and sulphur powder and distinguish between these on the basis of:
- i. appearance, i.e., homogeneity and
heterogeneity
- ii. behaviour towards a magnet
- iii. behaviour towards carbon disulphide as
a solvent
- iv. effect of heat
4.
To carry out the following reactions and classify them as physical or chemical
changes:
- a. Iron with copper sulphate solution in
water
- b. Burning of magnesium in air
- c. Zinc with dilute sulphuric acid
- d. Heating of copper sulphate
- e. Sodium sulphate with barium chloride in
the form of their solutions in water
5.
To prepare stained temporary mounts of (a) onion peel and (b) human cheek cells
and to record observations and draw their labeled diagrams.
6.
To identify parenchyma and sclerenchyma tissues in plants, striped muscle
fibers and nerve cells in animals, from prepared slides and to draw their
labeled diagrams.
7.
To separate the components of a mixture of sand, common salt and ammonium
chloride (or camphor) by sublimation.
8.
To determine the melting point of ice and the boiling point of water.
9.
To establish relationship between weight of a rectangular wooden block lying on
a horizontal table and the minimum force required to just move it using a
spring balance.
10.
To determine the mass percentage of water imbibed by raisins.
Second Term Practicals
1.
To verify the Laws of reflection of sound.
2.
To determine the density of solid (denser than water) by using a spring balance
and a measuring cylinder.
3.
To establish the relation between the loss in weight of a solid when fully
immersed in
- a. tap water
- b. strongly salty water, with the weight of
water displaced by it by taking at least two different solids.
4.
To observe and compare the pressure exerted by a solid iron cuboid on fine
sand/ wheat flour while resting on its three different faces and to
calculate the pressure exerted in the three different cases.
5.
To determine the velocity of a pulse propagated through a stretched
string/slinky.
6.
To study the characteristic of Spirogyra/Agaricus, Moss/Fern, Pinus ( either
with male or female cone) and an Angiospermic plant. Draw and give two
identifying features of the groups they belong to.
7.
To observe the given pictures/charts/models of earthworm, cockroach, bony fish
and bird. For each organism, draw their
picture and record:
picture and record:
- a. one specific feature of its phylum.
- b. one adaptive feature with reference to
its habitat.
8.
To verify the law of conservation of mass in a chemical reaction.
9.
To study the external features of root, stem, leaf and flower of monocot and
dicot plants.
10.
To study the life cycle of mosquito
