Home › Maharashtra SSC (Class 10) › Chemistry › Chemical Reactions and Equations › Water is decomposed into hydrogen and oxygen by …
Water is decomposed into hydrogen and oxygen by passing electric current through acidulated water: 2H$_2$O(l) $\longrightarrow$ 2H$_2\uparrow$ + O$_2\uparrow$. This type of decomposition is called:
Aneutralisation
Brancidity
Crusting
Delectrolysis
Answer & Solution
Correct answer: D. electrolysis
1. Here the decomposition is driven by electrical energy passing through the water.
2. Decomposition brought about by electrical energy is named electrolysis.
3. Neutralisation is an acid-base reaction, not a decomposition.
4. Rusting and rancidity are slow oxidation processes, unrelated to electric decomposition, so they are wrong.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 3 "Chemical Reactions and Equations", p.46_
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