Reagent that converts a ketone into its semicarbazone

1. A.
   $\text{NH}_{2}\text{OH}$
2. B.
   $\text{NH}_{2}\text{-NH-CONH}_{2}$
3. C.
   $\text{NH}_{2}\text{-NH-C}_{6}\text{H}_{5}$
4. D.
   $\text{NH}_{2}\text{-NH}_{2}$

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1. A.
   ${NH}_{2}OH$
2. B.
   ${NH}_{2}{NHCONH}_{2}$
3. C.
   ${NH}_{2}{NHC}_{6}H_{5}$
4. D.
   ${NH}_{2} - {NH}_{2}$

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1. A.
   ${NH}_{2}OH$
2. B.
   ${NH}_{2} - NH - {CONH}_{2}$
3. C.
   ${NH}_{2} - NH - C_{6}H_{5}$
4. D.
   $\ {NH}_{2} - {NH}_{2}$

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1. A.
   $\mathrm{NH_2 - OH}$
2. B.
   $\mathrm{NH_2 - NH_2}$
3. C.
   $\mathrm{NH_2 - NH - CONH_2}$
4. D.
   $\mathrm{NH_2 - NH - C_6H_5}$

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1. A.
   Hydroxyl amine
2. B.
   Hydrazine
3. C.
   Phenyl hydrazine
4. D.
   Semicarbazide

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