Match the column I(reaction) with column II(nature of product) and column III(Number of chiral carbon in the product)

	Column I		Column II		Column II
a.		p.	Racemic mixture	w.	$0$
b.		q.	Meso	x.	$1$
c.		r.	Diastereomer	y.	$2$
d.		s.	Vicinal dihalide	z.	$3$

Give various steps and reagents involved in the conversion of  $\mathrm{But}-1-\mathrm{ene} \mathrm{into} \mathrm{But}-2-\mathrm{ene}$

Give various steps involved in the following reactions:

The major product formed in the following reaction is 

List the following dienes in decreasing order of their reactivity in Diels-Alder reaction.

$\mathrm{D}=$ electron donating substituent,
$\mathrm{W}=$ electron withdrawing group

What is the major product of above Diels-Alder reaction? 

Intermediates involved in the Curtius reaction  ${\mathrm{RCON}}_3 \stackrel{\mathrm{h\nu }}{\to }{\mathrm{RNH}}_2$ are 

Which of the following reactions give diastereomeric products?