HS, the following reaction occurs :1 of oxygench one is reduced ?alled .........TU19 UHO(aq)Phso, (s) + 4H(a) Which substance is reduced ?(1) Which substance is oxidised ?22. Identify the component oxidised in the following reactHS + Cl2 →S + 2HCI23. When So, gas is passed through saturated solution of HS,SO2 + 2H S - 2H2OIn this reaction, which substance is oxidised and which on+ 3S24. Fill in the following blanks with suitable words:(a) The addition of oxygen to a substance is cacalled ......(0) The addition of hydrogen to a substance is called ......... whe(c) Anti-oxidants are often added to fat containing foods to preverShort Answer Type Questions25. What is an oxidation reaction ? Identify in the following reactionsubstance reduced :ZnO + C - → Zn + CO26. (a) What is a redox reaction ? Explain with an example.(b) When a magnesium ribbon burns in air with a dazzling flame and formsOyidicadocalled ........ whereas removal of Oxu... whereas removal of hydrogen is calledals to prevent ................due to oxidation.owing reaction ( the substance oxidised, and indazzling flame and forms a white ash, is magn