Question

assertion chemical reaction changes the physical and chemical state of a substance abuse and when electric current is passed through water it decomposes to produce hydrogen and oxygen gases. 2H2O on giving electric current gives to 2h2 Plus O2 ​

Answer 1

Answer:

Both the assertion and reason are true but reason is not correct explanation for assertion.

Answer 2

ASSERTION AND REASON ARE CORRECT BUT REASON IS NOT A CORRECT EXPLANATION OF ASSERTION.

Explanation:

• When substances/reactants undergo a chemical reaction, their physical and chemical state changes.
• For example, water is liquid but when electricity is passed it undergoes decomposition to form gases that are hydrogen and oxygen gas(an example of physical change).
• When acid and base reacts it form water and salt which are neutral, this is an example of chemical change.
• Both reason and assertion are correct.
• But the reason does not explain the correctness of assertion.