Ozonation as a water purification method has an advantage over chlorination because: MCQ with Answer and Explanation

Explanation:
In diamond, each carbon is sp³ hybridized and forms four covalent bonds, using all valence electrons. There are no delocalized electrons; thus it cannot conduct electricity. Graphite, with sp² hybridization, has one delocalized electron per carbon, making it a conductor. Diamond is an electrical insulator but excellent thermal conductor.

Explanation:
Radioactive decay is a spontaneous process where an unstable atomic nucleus loses energy by emitting radiation. Since it involves the emission of particles (protons, neutrons, electrons) from the nucleus, it fundamentally alters the nucleus, making it a nuclear, not chemical, process.

Explanation:
The salt bridge (e.g., KCl-agar) allows migration of ions between half-cells, completing the circuit and maintaining charge neutrality. Without it, charge buildup would stop the reaction. It does not increase current or electrode potential. It prevents mixing of solutions. A porous membrane can also serve. Ions in the bridge must have similar mobility and not interfere with cell reactions.