UPMSP Vocational Printing Practice Questions - Uttar Pradesh UPMSP Intermediate (Class 12) Vocational Printing - Code 231 Exam

What chemical and physical principle makes offset lithographic printing possible?

Mutual repulsion between oil-based ink and water-based dampening solution Thermal evaporation of fast-drying solvents under hot air blowers Electrostatic attraction between charged toner particles and paper Capillary absorption of liquid ink into porous paper fibers

Correct Answer:

Mutual repulsion between oil-based ink and water-based dampening solution

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