Which non-metal is a good conductor of electricity? MCQ with Answer and Explanation

Explanation:
In 1911, Ernest Rutherford conducted the gold foil experiment, firing alpha particles at a thin gold sheet. While most passed through, a few were deflected at large angles, and some bounced back. This led him to conclude that the atom's positive charge and most of its mass are concentrated in a tiny, dense central core called the nucleus.

Explanation:
Fe in FeCl₃ goes from +3 to +2 in FeCl₂, gaining an electron – reduction. Sn in SnCl₂ goes from +2 to +4 in SnCl₄, losing electrons – oxidation. FeCl₃ is the oxidizing agent, SnCl₂ is the reducing agent.

Explanation:
Biofuels, such as bioethanol and biodiesel, are derived from recent biological materials (biomass) and can be replenished, making them renewable. Biodiesel is specifically produced through transesterification, a chemical reaction where vegetable oils or animal fats react with an alcohol (like methanol) to form fatty acid methyl esters.