What conversion occurs in the formation of milk into curd?

Draw the electron dot structure of ethane,$C_{2}H_{6}$.

$(a)$ How is vinegar made?
$(b)$ What is glacial acetic acid? What is its melting point?
$(c)$ Why are carboxylic acids called weak acids?
$(d)$ Write the name and the formula of the two compounds formed when the ester $CH_{3}COOC_{2}H_{5}$ undergoes saponification.

Which of the following is not a straight chain hydrocarbon?

What is the boiling point of methanal (in $,K$)?

How do the boiling point and melting point of hydrocarbons change with an increase in molecular mass?