Which of the following plastics is used for making non-stick cookware? MCQ with Answer and Explanation

Explanation:
Alpha particles are relatively heavy (4 amu) and doubly charged (+2), so they interact strongly with matter, losing energy rapidly via ionization. They can be stopped by a sheet of paper or a few centimeters of air. Beta particles (lighter, faster electrons) penetrate further. Gamma rays (uncharged EM waves) are most penetrating. Alpha emitters are hazardous if ingested or inhaled.

Explanation:
Alpha particle = ⁴₂He²⁺ (2 protons + 2 neutrons). Beta particle = electron or positron. Gamma = electromagnetic radiation. Alpha has low penetration, high ionization.

Explanation:
Oleum, also known as fuming sulfuric acid, is a solution of sulfur trioxide (SO3) in concentrated sulfuric acid (H2SO4). Its chemical formula is often represented as H2S2O7 (disulfuric acid or pyrosulfuric acid), which is essentially H2SO4 + SO3. It is an intermediate in the Contact process.