XII Annual Practical Examination in Chemistry Format of Question Paper Maharashtra State Board. 12 Chemistry Practical Exam Question Paper Maharashtra State Board.

Format of Question Paper

XII Annual Practical Examination in Chemistry

 

Time: 3 hours                                                                                                       Marks 30

Examination Seat No.                                                                                          Table No.

Batch No:                                          Session: Morning/Evening                        Date:   /     /

 

1. a. Certified journal and completed practical notebook published by Balbharti.  5 Marks.

  b. Oral (strictly based upon experiments/activity allotted during examination). 5 Marks.

 

2. Quantitative estimation.      10 Marks.   

     Determine the concentration in terms of molarity of KMnO by titrating it against standard solution of Oxalic acid/FAS. (standard solution to be prepared by student).

 

3 A. Chemical kinetics experiments.    10 Marks

To study the effect of temperature or concentration on rate of reaction between sodium thiosulphate and hydrochloric acid/Effect of concentration on rate of reaction between potassium iodate and sodium sulphate.

OR

3 B. Electrochemistry experiment   10 Marks

To study the variation in cell potential of the cell Zn | Zn2⁺ | Cu²⁺ | Cu with change in concentration of electrolyte (CuSO₄/ZnSO₄) at room temperature.

OR

3C. Qualitative analysis      10 Marks

Detection of two basic radicals qualitatively from the given inorganic mixture. (Insoluble salts excluded).

OR

3 D. a. Qualitative analysis            6 Marks

Detection of two acidic radicals qualitatively from given inorganic mixture. (Insoluble salts excluded)

OR

b. Any one activity         4 Marks

OR

b. i. Detection of functional group of given organic compound. (Any one)        2 Marks

 ii. Detection of carbohydrates, proteins, fats and oils in the given food stuff. (Any one) 2 Marks.

OR

3 E a. Thermo chemistry experiments  6 Marks

 Determination of enthalpy or dissolution/neutralization/displacement. (Any one)

b. Any one activity  4 Marks

OR

b. i. Detection Of functional group of given organic compound. (Any one) 2 Marks

ii, Detection of carbohydrates, proteins, fats and oils the given food stuff. (Any one) 2 Marks

OR

3 F a. Any one Inorganic/Organic preparation. Preparation of     6 Marks

 b. Any one activity   4 Marks

OR

b. i. Detection of functional group of given organic compound (Any one)    2 Marks

ii. Detection of carbohydrates, proteins, fats and oils in the given food stuff (Any one)  2 Marks