Sprinkling of powder on the caromboard _____ friction.

Explanation

**Step-by-Step Solution:**

1. **Understanding Friction:** Friction is the force that opposes the relative motion of two surfaces in contact. It is influenced by the nature of the surfaces and their roughness.

2. **Effect of Powder on Surface:** When powder is sprinkled on a carrom board, it fills in the grooves and irregularities present on the surface. This makes the surface smoother.

3. **Reduction of Friction:** A smoother surface means that there are fewer points of contact between the two surfaces (the carrom board and the carrom pieces). As a result, the interlocking that occurs due to the grooves is minimized.

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