The quality of fountain-pen ink depends largely on:

Surface tension of the liquid

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Viscosity of ink

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impurities in ink

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Density of ink

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Solution

The correct option is B Viscosity of ink
The quality of fountain-pen ink depends largely on viscosity of ink because as the viscosity of ink is more, it requires hard pressure on the pen to write and as the viscosity of ink is less we can write smoothly.

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The barrel of a fountain pen, cylindrical in shape, is 7 cm long and 5 cm in diameter. A full barrel of ink in the pen will be used up on writing 330 words on an average. How many words would use up a bottle of ink containing on fifth of litre?

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The quality of fountain-pen ink depends largely on:

The correct option is B Viscosity of inkThe quality of fountain-pen ink depends largely on viscosity of ink because as the viscosity of ink is more, it requires hard pressure on the pen to write and as the viscosity of ink is less we can write smoothly.

The correct option is B Viscosity of ink
The quality of fountain-pen ink depends largely on viscosity of ink because as the viscosity of ink is more, it requires hard pressure on the pen to write and as the viscosity of ink is less we can write smoothly.