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  1. Sodium borohydride reacts very slowly with cold water    
  2. Sodium borohydride reacts very violently with cold water to produce  straight H subscript 2    
  3. Solubility of sodium borohydride in water at 25 to the power of ring operator straight C text  is  end text 10.05 straight g divided by mL    
  4. Melting point of sodium borohydride is 500 to the power of ring operator straight C    

The correct answer is: Sodium borohydride reacts very violently with cold water to produce  straight H subscript 2


    Reaction of NaBH subscript 4 with cold water is very slow. All other statements except (b) are correct.

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