Answer» Correct Answer - Option 4 : Oil based
The correct answer is Oil based. - Hungarian-born László Bíró created the ballpoint pen in modern times.
- While working at the newspaper, he realized that the ink used on newsprint dried quickly and was generally smudge-free.
- The key to their success was a combination of a thick, sticky ink and a tiny ball bearing.
- This ball-and-socket mechanism allows the ball to roll around easily on paper while sealing the ink from the air so it doesn’t dry out.
- The ink used in ballpoint pens is oil-based and dries faster than other types of ink.
- Rollerball pens use the same design as ballpoint pens but with water-based ink.
- Marker pens come in four types of ink: pigment, water, oil and alcohol-based.
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