NDA Government Jobs Exams

Sodium stearate is a salt and is used -
(a) in gunpowder (b) in paint (c) to make soap (d) to make fertilizer

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NDA Other Question

The principle of cleaning by soap is -
(a) surface tension (b) floatation (c) viscosity (d) elasticity
The pure form of carbon is -
(a) diamond (b) graphite (c) charcoal (d) fulerence