Does barium nitrate and sodium chloride for a precipitate?

It depends on the solution in which the reaction producing it occurs. A precipitate is formed when a product of a reaction in an aqueous solution is not soluble. Instead of being dissolved in the solution, it 'precipitates' into a solid, which often is suspended in the solution and may cause a color change.

Ba(OH)2 is soluble in water, and therefore will not produce a precipitate in water unless the water is over-saturated or at low temperatures.