[CH_(3)-CH-CH_(2)-CH_(2)-CH_(3)(Cl_(2))/(hv)],[CH_(3)],[" Mono-chloro product (inculding "],[" steroisomers) are : "]

CH_(3)-underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(2)-CH_(3)underset(hv)overset(Cl_(2))rarr Mono-chloro product (inculding steroisomers) are :

CH_(3)-CH_(2)-O-CH_(2)-CH_(3)+O_(2)overset(hv)rarr (A) The product (A) is:

CH_(3)-CH_(2)-O-CH_(2)-CH_(3)+O_(2)overset(hv)rarr (A) The product (A) is:

Reaction-1 : CH_(3)-CH_(2)-CH_(2)-CH_(2)-CH_(3)overset(Cl_(2))underset(hv)(to) Optically active monochloro products (s) are (R) . Reaction-2 : Optically active di-chloro products (s) are (S). Reaction-3 : Optically active di-chloro product (s) are (P). Reaction-4 : 2-methoxy propane overset(Cl_(2))underset(hv)(to) Optically active monochloro product (s) are (Q). What is the sum of P+Q+R+S?

CH_(2)-CH_(2)-CH_(2)-CH_(3)overset(Br_(2)//hv)(to) Major product in the above reaction is:

CH_(3) - underset(CH_(3))underset(|)(CH) - CH_(2) - CH_(3) underset(hv)overset(Cl_(2))(rarr) (x) = Number of monochloro product including stereoisomers.

CH_(3) - CH_(2) - CH_(2) - CH_(3) overset(Br_(2)//hv)(rarr) Major product in the above reaction is :