Organic Chemist...

What is 'Z' in the following sequence of reactions ?

Which of the following will undergo hydrolysis most readily with aq.KOH?

$${ C }_{ 2 }{ H }_{ 4 }{ O }$$ (A) reacts with $${ CH }_{ 3 }{ MgBr }$$ followed by decomposition with $${ H }_{ 3 }{ O }^{ + }$$ to give $${ 1 }^{ \circ  }$$ alcohol. Thus, A is

Which of the following orbital combination does not from $$\pi $$-bond?

What is the final product ?

Identity the correct sequence of increasing number of $$\pi-$$bonds in structure of the following molecules:
I) $$H_{2}S_{2}O_{6}$$
II) $$H_{2}SO_{3}$$
III) $$H_{2}S_{2}O_{5}$$

Identify $$D$$:

Which one of the following esters gets hydrolysed most readily under alkaline condition?

Write chemical equations for the following conversions:

Which of the following compounds is most reactive with $$NaHCO_3$$ ?