Question

निम्न अभिक्रियाओं का प्रकार बताइए। 1.c+o2=co2. 2.Zn+2ag now=zn(no3) +2ag. ​

Answer 1

Explanation:

B

Zn+2AgNO3(0)AgNO3x+(−1)=0x=+1(Ag+) ⟶ 2Ag+Zn(NO3)2(0)Zn(NO3)2x+2(−1)=0x=2(Zn+2)

Here oxidation no. of Zn changes from 0 in Zn to +2 in Zn(NO3)2. It is oxidised. 

Ag is reduced. Because , in AgNO3, it is in +1 state and reduced to O in Ag. Oxidation and reduction happened in  a single reaction. So, it is

A

Another special type of combination reaction is a combustion, meaning a reaction in which something combines with oxygen and gives off heat and light: C + O2 → CO2 2 Mg + O2 → 2 MgO Combustion of a compound includes break-up (decomposition) of the compound first.