For April 12

koi karo

dekho SH^- is better nu as its less e-ve than cl

2nd option ke liye se electron density by hyperconjugation

3rd option ke liye i cn't say as bidged cmpnds are not in course

logic for 4th and 1st is almost same

i got d ans as 3,4 wat is d answer

cud it be 1,3
1 coz nucleophilicity increases from right to left,
3 coz it is not the first one in 3 is less succeptable to stearic problems, though it is, than the 2nd one...(its locked up and thus more organised)
not 2 coz even though the charge density is more on tert butyl oxide, it is stearically more hindered than the first one...
i guess the setter jus wanted to test the thing that along with charge density factors, theres steric hinderence that comes into play when we speak of nucleophilicity...

wat is d ans kamalendu bhai

gordo is right

nuclophilicity decreases with increase in branching near the site of asttack.

nuclophilicity decreases with increase in electronegativity
so the ans is 1,3