Explain the Ester test.

Apparatus: Two test tubes, bent tube, rubber cork, burner, etc. Chemicals: Calcium carbonate, freshly prepared lime water. Procedure: Take some calcium carbonate in a test tube. Fit a bent tube to this test tube with the help of a rubber cork. Insert the other end of the bent tube in the freshly prepared lime water taken in the other test tube. Heat the powdered calcium carbonate in the first test tube strongly. What will you observe?

Explain the Doppler effect in light and hence explain the red and blue shift.

Explain the following : Explain the inheritance of sickle-cell anaemia disease.

What is esterification reaction? Explain the preparation of an ester with the help of a neat labelled diagram.

Explain how sperms are formed from testes and transported to urinogenital duct.

Answer the following question in short : Explain why the repulsion is used as a test for identifying an electrically charged object ?

Explain the Sodium nitroprusside test. Write its use.

Answer the following questions Explain why an empty test tube held obliquely in water appears shiny to an observer looking down.

Explain why Lactose gives positive Tollen's test.