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Amino Acids

A α- Amino ac...

Question

$(A) α - Amino acid (C_{3} H_{7} N O_{3}) M e O H - --- \to H C l (B) (C_{4} H_{10} N O_{3} C l) P C l_{5} - -- \to (C) (C_{4} H_{9} N O_{2} C l_{2})$

$(C) (C_{4} H_{9} N O_{2} C l_{2}) H_{3} O^{+} - -- \to (D) (C_{3} H_{6} N O_{2} C l) N a - H g - ---- \to H C l Alanine$

Compound (D) is :

A

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B

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C

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D

Both (b) and (c)

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Solution

The correct option is A

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(A) α - Amino acid (C_{3} H_{7} N O_{3}) M e O H - --- \to H C l (B) (C_{4} H_{10} N O_{3} C l) P C l_{5} - -- \to (C) (C_{4} H_{9} N O_{2} C l_{2})

(C) (C_{4} H_{9} N O_{2} C l_{2}) H_{3} O^{+} - -- \to (D) (C_{3} H_{6} N O_{2} C l) N a - H g - ---- \to H C l Alanine

Compound (B) is

(A) α - Amino acid (C_{3} H_{7} N O_{3}) M e O H - --- \to H C l (B) (C_{4} H_{10} N O_{3} C l) P C l_{5} - -- \to (C) (C_{4} H_{9} N O_{2} C l_{2})

(C) (C_{4} H_{9} N O_{2} C l_{2}) H_{3} O^{+} - -- \to (D) (C_{3} H_{6} N O_{2} C l) N a - H g - ---- \to H C l Alanine

Compound (D) is :

Q. Which of the following statements are correct about

Z n, C d

H g

?

(I)

they exhibit high enthalpies of atomisation as the

d

-subshell is full

(I I)

Z n

C d

do not show variable oxidation states while

H g

+ I

+ I I

(I I I)

Z n, C d

H g

are paramagnetic in nature

(I V)

Z n, C d

H g

are called soft metals.

Q. Which of the comparison regarding

Z n, C d, H g

is/are correct?

Z n {C l}_{2}

is ionic whereas

C d {C l}_{2}

H g {C l}_{2}

Z n

C d

dissolves in dilute acid

(H C l)

H_{2}

H g

Z n

C d

forms precipitate of

Z n (O H)_{2}

C d {(O H)}_{2}

H g

forms coloured precipitate of

H g (O H)_{2}

A_{2}^{2 +}

2Na + $2 C H_{3} C H_{2} O H$ $\to$ _______ + $H_{2}$

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