The ink used in traditional ballpoint pens is a high- viscosity paste made of pigments or dyes dissolved in an oil-based solvent, often a glycol or oleamide. This oil-based formulation allows the ink to flow smoothly from the ballpoint onto the paper and dry quickly upon contact with air, while preventing it from drying out inside the pen tube.
In ballpoint pens, dyes used are:
Asked in OPSC CS Prelims 2020 · Topic: Alcohol (Industrial Synthesis and Applications of Alcohols (Ethanol production, methanol toxicity, solvents, fuels))
More Chemistry questions
- Sometimes, the consumption of local made alcoholic beverages may cause blindness or even death. This may be because of contamination of the beverages with :
- Which one of the following is known as Wood Spirit ?
- The offending substance in the liquor tragedies leading to blindness, etc. is
- Which is used in alcoholic beverages?
- Which one of the following is a false statement?
- Match the items of Column – I with items of Column – II Column – I (i) Methanol (ii) Conversion of 2° alcohol into ketone (iii) Denaturation of alcohol (iv) Ethanol Column – II (a) Fermentation of sugars (b) Wood spirit (c) CrO$_3$ (d) Copper sulphate and pyridine
- The alcohol whose ingestion of even small quantities causes blindness - - (5) Question not attempted
- Which of the following is not a distilled liquor?