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CHEMISTRY TEST-XII(Sub.)

TOPIC – BASIC PRINCIPLES AND TECHNIQUES IN ORGENIC CHEMISTRY

Mark-20 Time: 1Hrs.

Answer the following …….…………………………………………………..(20)

1) Decribe the method to determine melting point of solid.

2) Describe briefly thin layer chromatography.

3) Describe chemistry of lassaigne method for detection of nitrogen, sulphur and halogen.

4) Describe Duma’s method for estimation of nitrogen.

5) Draw general diagram for steam distillation.