Home › Maharashtra SSC (Class 10) › Chemistry › Chemical Reactions and Equations › According to the chapter, which definition of ox…
According to the chapter, which definition of oxidation is correct?
ACombining with hydrogen or losing oxygen
BCombining with oxygen or losing hydrogen
CLosing oxygen and gaining hydrogen
DGaining one or more electrons
Answer & Solution
Correct answer: B. Combining with oxygen or losing hydrogen
1. The chapter defines oxidation as a reactant combining with oxygen, e.g. 2Mg + O$_2$ $\longrightarrow$ 2MgO.
2. It also includes loss of hydrogen, e.g. removal of H$_2$ from a reactant.
3. So oxidation = gain of oxygen OR loss of hydrogen.
4. Combining with hydrogen or losing oxygen describes reduction, and gaining electrons is reduction in the electron sense, so those options are wrong.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 3 "Chemical Reactions and Equations", p.51_
Related questions
Clear limewater turns milky white when a gas is bubbled through it. Which gas was in the bMilk left standing for a few days tastes sour. Which process has produced that taste?During a chemical reaction, what happens to the atoms of the reactants?What do we call the substances that are present before a reaction takes place?What happens to the starting substances during a chemical reaction?A reducing agent in a redox reaction is the substance thatRespiration, in which glucose combines with oxygen to release energy, is best described asThe decomposition of water into hydrogen and oxygen on passing electric current is called