CBSE Class 12 Chemistry Solved Model Paper (Set - 2)

Find CBSE Class 12 Chemistry Solved Model Paper (Set: 2). Get the idea that what types of Questions had been asked in the CBSE Class 12 Board Exam Chemistry Solved Model Paper.

May 26, 2015 16:05 IST

The experts at Team Jagran Josh have framed the Model Test Paper for Chemistry subject which strictly follows the Board pattern of CBSE Class 12 for the year 2016. The Model Test Paper is extremely beneficial for the Class 12 Students appearing for their respective examinations in 2016.

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A few Questions from this Model Test Paper are given below:

Q. Explain that ammonia is a good complexing agent?

Sol. Ammonia causes high d-splitting in complex compounds as it is a strong field ligand. This result in formation of low spin compounds. Thus, it is a good complexing agent.

Q. A group 14 element is to be converted into n-type semiconductor by doping it with a suitable impurity. To which group should this impurity belong?

Sol. Group 15

Q. Why is the froth floatation method selected for the concentration of sulphide ores?

Sol. The principle of this method is based on the difference in the wetting properties of the ore and the gangue particles with the water and oil. This method is used for those whose ore gets wetted by oil. Sulphide ore gets wetted by oil and gangue particles by water. Thus, it is used for sulphide ores.

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