Q.

Consider the following reaction

Propanal+Methanal(ii) Δ(iii) NaOH(iv) H3O+(i) dil. NaOHProduct B(C5H8O3)

The correct statement for product B is. It is                  [2023]

1 Optically active and adds one mole of bromine  
2 Optically active alcohol and is neutral  
3 Racemix mixture and gives a gas with saturated NaHCO3 solution  
4 Racemix mixture and is neutral  

Ans.

(3)