In which of the following pairs both are nucleophiles ?

Which one of the following alkane is NOT formed in Wurtz reaction ?

Which of the following groups has highest priority according to R, S convention?

The halogen atom in aryl halides is

Chlorobenzene can be obtained by benzene diazonium chloride by

But-l-ene on reaction with HCl in the presence of sodium peroxide yields

Carbon tetrachloride is used as

The preparation of alkyl fluoride from alkyl chloride, in presence of metallic fluorides is known as

Good conductor of electricity and heat is

Organic compound must contain an element