Haloalkanes and...

Reagent which can convert an alkyl amine into alkyl chloride.

Which of the following has the lowest barrier to rotation about the indicated bond ? 

${ CH }_{ 2 }={ CH }_{ 2 }+{ Br }_{ 2 }\xrightarrow { NaCl } \quad Products$. Which of the following product is not formed in the above reaction?

Which of the following statements regarding the $S_N1$ reaction shown by alkyl halide is NOT CORRECT? 

Alkane can be iodinated in the presence of:

The racemic mixture of Alanine ($CH_8-CH-COOH$) can be resolved by
$NH_2$
1) (+)-2-Butanol
2) (l)-2-Chlorobutanoic acid
3) ()-2-Butanol
4) $(dil$ mix)-2-Chlorobutanoic acid

Alkyl halides can be obtained by all methods excepts?

$CH_3-CH_3+Cl_2\xrightarrow{hv}$?

${CH}_{3}-I+2Na+I-{CH}_{3}\xrightarrow [  ]{dry \; ether }$ _______

Above reaction is an example of 1-4 -elimination .Predict the product.