Day 407: JEE Mains Chemistry

1. A.
   (A), (C) and (E) only
2. B.
   (A) and (E) only
3. C.
   (C) and (E) only
4. D.
   (A), (B), (D) and (E) only

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1. A.
   (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
2. B.
   (A)-(IV), (B)-(II), (C)-(III), (D)-(I)
3. C.
   (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
4. D.
   (A)-(II), (B)-(IV), (C)-(III), (D)-(I)

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1. A.
   All naturally occurring amino acids except glycine contain one chiral center.
2. B.
   All naturally occurring amino acids are optically active.
3. C.
   Glutamic acid is the only amino acid that contains a -COOH group at the side chain.
4. D.
   Amino acid, cysteine easily undergo dimerization due to the presence of free SH group.

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1. A.
   $+ 1,0,0, - 1$
2. B.
   $0, - 1,0, + 1$
3. C.
   $0, + 1,0, - 1$
4. D.
   $0,0, - 1, + 1$

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1. A.
   $t_{100\%} = \left( t_{1/2} \right)^{2}$ and $t_{100\%} = \left( t_{1/2} \right)^{- \infty}$
2. B.
   $t_{100\%} = 2t_{1/2}$ and $t_{100\%} = \left( t_{1/2} \right)^{\infty}$
3. C.
   $t_{100\%} = 2t_{1/2}$ and $t_{100\%} = \left( 2t_{1/2} \right)^{2}$
4. D.
   $t_{100\%} = \left( t_{1/2} \right)^{\infty}$ and $t_{100\%} = 2t_{1/2}$

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