The following precautions were listed for the experiment on determination of melting point of ice. The incorrect precaution is :

The melting point of ice

What is the melting point of ice?

Describe an experiment to determine melting point of wax.

The melting point of pure ice is

Collect the melting point of Ice

In an exp[eriment to determine the boiling point of water mention two important precautions.

On increasing pressure, melting point of ice

A student lists the following precautions for the experiment on determining the velocity of a pulse propagated through a stretched string: (A) The string should not be stretched too tight. (B) The counting of the pilse journeys must start from zero and not from one. (C) The string should be stretched straight in contact with the table. (D) The amplitude of the pulse should be kept appreciably high. The incorrect entry, in this list of precautions, is the precaution listed as: