INDEX

EXPERIMENTS:

1.Aim :  To  find  out  pH  of  the following samples by using  pH  paper/universal indicator :
(i)    Dilute hydrochloric acid
(ii)  Dilute sodium hydroxide (NaOH) solution
(iii) Dilute ethanoic acid solution
(iv) Lemon juice
(v)   Water
(vi) Dilute sodium hydrogen carbonate or sodium bicarbonate solution.

2(a). Aim : To study the properties of acids (dilute HCl) by their reaction with :
(i)     Litmus solution (blue/red)
(ii)   Zinc metal
(iii) Solid sodium carbonate

2(b). Aim : To  study the properties of bases (dilute NaOH) by their reaction with
(i)      Litmus  solution  (blue /red)          (ii)  Zinc metal  and    (iii)  Solid sodium 

           carbonate

3(i).  Aim : To carry out the action of water on quicklime and record the observations. Also to identify the type of chemical  reaction involved.

3(ii). Aim : To study the action of heat on ferrous sulphate crystals and record the observations. Also to identify the (main) type of chemical reaction involved.

3(iii). Aim : To carry out the chemical reaction between iron nails and copper sulphate solution in water and record observations. Also to identify the type of reaction involved.

3(iv). Aim : To carry out the chemical reaction of sodium sulphate solution and barium chloride solution in water  and record the observations. Also to identify the type of reaction involved.

OR

3. Aim :  (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 results.

4. Aim : To study the dependence of potential difference(V) across a resistor on the current (I) passing through it and determine  its  resistance. Also plot a graph between V and I.

5(a). Aim : To  determine the equivalent resistance  of  two  resistors  when connected  in  series.

5(b). Aim : To  determine the equivalent resistance  of  two  resistors  when connected  in  parallel.

6.Aim :  To  prepare  a  temporary  mount  of  a leaf  peel to  show  its  stomata.

7. Aim :  To  show  experimentally that  carbon  dioxide  is  given out  during  respiration.

8. AIM  :  To study the following properties of acetic acid (Ethanoic acid).
(i)    Odour   (ii)      Solubility in water  (iii)    Effect on litmus solution  (iv) Reaction with sodium bicarbonate

9. Aim :  To study the comparative cleaning capacity of a sample of soap in soft and hard water.

10(a). Aim:  To  determine  the  focal  length  of  a  concave  mirror  by  obtaining  image  of  a  distant  object.

10(b). Aim:  To  determine  the  focal  length  of  a  convex  lens  by  obtaining image of  a  distant  object.

11.Aim: 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,  the angle of refraction and  the  angle  of  emergence and interpret the result.

12.Aim:  To  study  (a) binary  fission  in Amoeba and  (b) budding  in yeast with  the  help  of  prepared  slides.

13.Aim:  To  trace the path of the rays of light through a glass prism.

14.Aim: To  draw the images of an object formed by a convex lens, when placed at various positions.

15.Aim : To  identify the different parts of an embryo of a dicot seed (pea, gram or red kidney bean).