Which metal can displace iron from iron(II) sulfate solution? MCQ with Answer and Explanation

Explanation:
Chromatography separates components of a mixture based on differential affinities between a stationary phase and a mobile phase. In paper chromatography, dyes separate due to different rates of movement. Distillation is for liquids, centrifugation for density-based separation, filtration for solids from liquids. Chromatography is used in forensics, drug testing, and food coloring analysis.

Explanation:
Centrifugation spins the mixture at high speed, causing denser particles (skimmed milk) to settle at the bottom while lighter cream floats on top. This is based on density differences. Distillation is for liquids, filtration for insoluble solids, sublimation for sublimable solids.

Explanation:
Catalysts provide an alternative pathway with lower activation energy, increasing reaction rate without being consumed. They do not affect equilibrium constant or thermodynamic parameters (ΔH, ΔS). They can be solid (heterogeneous), liquid, or gas. Enzymes are liquid-phase catalysts. A catalyst does not change the position of equilibrium, only speeds up attainment.