4. Two organic compounds A and B have the same molecular formula CH. Write the names and structural formulae of:
a) If A is cyclic compound
b) If B is an open chain compound
c) Which compound contains single bonds as well as double bond?
d) Which compound contains only single bonds?(Applying)

An experiment is conducted to see if cats preferred skim milk or 2% milk. a cup of skim milkwas put out for 5 kittens and then measured how much the kittens drank over the course of aday. following a cup of 2% milk was purout for the skittens and then masured how much thekittens drank over the course of a day. the same kittens were used and the milk was served atthe same temperature. it was discovered that the cats liked the 2% milk more than the skimmilk. what is the dependent variable in this experiment?