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1.78 g of an optically active L-amino ac...

1.78 g of an optically active L-amino acid (A) is treated with `NaNO_2//HCl` at `0^(@)` C. `448 cm^(3)` of nitrogen was at STP is evolved. A sample of protein has 0.25% of this amino acid by mass. The molar mass of the protein is

A

N - isopropylmethanamine

B

N - methypropan - 2- amine

C

N - methylpropanamine

D

butan - 2- amine

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The correct Answer is:
B
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