Chemistry Experiments Class 10

Can you provide me the Class X Central Board of Secondary Education - Assessment of Practical Skills in Science and Technology - Chemistry Experiments?

[Kiran Chandar]

The Class X Central Board of Secondary Education - Assessment of Practical Skills in Science and Technology - Chemistry Experiments is as follows:

LIST OF EXPERIMENTS (Class X)
1. To find the pH of the following samples by using pH paper/universal indicator.
i) Dilute Hydrochloric acid
ii) Dilute NaOH solution
iii) Dilute Ethanoic acid solution
iv) Lemon juice
v) Water
vi) Dilute Sodium Bicarbonate Solution.
2. To study the properties of acids and bases (dilute HC1 & dilute NaOH) by their
reaction with
i) Litmus solution (Blue/Red)
ii) Zinc metal
iii) Solid Sodium Cabonate
3. To determine the focal length of a
a Concave mirror
b Convex lens
by obtaining the image of a distant object.
4. To trace the path of a ray of light, passing through a rectangular glass slab, for different
angles of incidence. Measure the angle of incidence, angle of refraction, angle of
emergence and interpret the results.
5. To study the dependence of current (I) on the potential difference (V) across a resistor
and determine its resistance. Also plot a graph between V and I.
6. To determine the equivalent resistance of two resistors when connected in series.
7. To determine the equivalent resistance of two resistors when connected in parallel.
8. To prepare a temporary mount of a leaf peel to show stomata.
9. To show experimentally that light is necessary for photosynthesis.
10. To show experimentally that carbon dioxide is given out during respiration.
11. To study (a) binary fission in Amoeba and (b) budding in yeast with the help of
prepared slides.
12. To determine the percentage of water absorbed by raisins.8
13. To prepare SO2 gas, observe its following properties and draw inferences in respect of
i) odour
ii) solubility in water
iii) effect on litmus paper
iv) action on acidified potassium dichromate solution.
14. a) To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions.
i) ZnSO4 (aq.)
ii) FeSO4 (aq.)
iii) CuSO4 (aq.)
iv) Al2 (SO4)3 (aq.)
b) Arrange Zn, Fe, Cu and Al metals in the decreasing order of reactivity based on the
above result.
15. To study the following properties of acetic acid (ethanoic acid):
i) odour
ii) solubility in water
iii) effect on litmus
iv) reaction with sodium bicarbonate