What tool is used to mix the 1:20 test solution?

What tool is used to mix the 1:20 test solution?

• A. Glass bowl
• B. Metal bowl
• C. Plastic cup
• D. Beaker

Answer: (A)

Mixing a 1:20 test solution needs a container that won’t react with the solution. Glass bowls are chemically inert for most common test reagents, and their smooth, non-porous surface doesn’t absorb chemicals or odors, making them easy to clean and reuse. The wide interior helps you stir thoroughly with a spatula or rod and lets you observe the solution as it forms. While metal can react with certain substances, plastic can stain or retain residues, and a beaker is more about measuring or pouring than for steady mixing. So the glass bowl is the best choice for this task.

Mixing a 1:20 test solution needs a container that won’t react with the solution. Glass bowls are chemically inert for most common test reagents, and their smooth, non-porous surface doesn’t absorb chemicals or odors, making them easy to clean and reuse. The wide interior helps you stir thoroughly with a spatula or rod and lets you observe the solution as it forms. While metal can react with certain substances, plastic can stain or retain residues, and a beaker is more about measuring or pouring than for steady mixing. So the glass bowl is the best choice for this task.