Which of the following is a single replacement reaction? ( a. ba(oh)2 + h2so4 → baso4 + 2h2o ( b. 2mg + o2 → 2mgo (c. h2o+ co2 → h2co3 (d. zn + h2so4 → znso4 + h2

The correct answer is option d, that is, Zn + H₂SO₄ → ZnSO₄ + H₂

A single displacement reaction refers to a kind of chemical reaction in which one element substitutes another element in a chemical reaction. The more reactive element will substitute the less reactive element. This is illustrated with the help of reactivity series, as the metal that is present above in the series will substitute the metal that is present below in the series readily. From the given equations, Zn + H₂SO₄ → ZnSO₄ + H₂ is a kind of single displacement reaction.  

neutrons are in the middle of the atom and the electrons, which are much smaller.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?