railway RRB Group D Mock Test Series 2024-25 General Science Chemistry Chemical Reaction

આપેલ રાસાયણિક પ્રક્રિયામાં, કયો પદાર્થ ઘટાડવામાં આવે છે?

CuO + H2 → Cu + H2O

1
Cu
2
CuO
3
H2
4
H2O

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