Question

1. which color had the greatest affinity for paper?

blue
pink
red
green

1. how does the electrostatic method work?

it separates or moves particles based on their electric charges
it uses sound waves to attract and repel charged objects
it creates a vacuum that pulls particles together
it uses magnets to separate metallic materials from non - metallic ones

Explanation:

For question 5, without specific context (like a chromatography - related experiment where affinity for paper is determined by how far a color travels, with the least - traveling color having the greatest affinity), we can't be 100% sure. But in a typical paper - chromatography - like scenario (assuming blue travels the least). For question 6, the electrostatic method is based on the principle of electric charges. Charged particles are separated or moved due to electrostatic forces (attraction or repulsion) between them. Sound waves are not involved in the electrostatic method (eliminating the second option). A vacuum is related to pressure differences (not electrostatic forces, eliminating the third option). Using magnets is for magnetic separation (not electrostatic, eliminating the fourth option).

Answer:

1. blue
2. It separates or moves particles based on their electric charges