Read our full article of chemistry lab equipments here.

Q&A on biology and chemistry lab equipment in the school laboratory

Q: What is a Bunsen burner used for in a chemistry lab?

A: A Bunsen burner is used to heat substances in a laboratory setting.

Q: What is a test tube used for in a chemistry lab?

A: A test tube is used for holding small amounts of liquids for heating, mixing or observing chemical reactions.

Q: What is a beaker used for in a chemistry lab?

A: A beaker is used for holding larger amounts of liquids for heating, mixing or observing chemical reactions.

Q: What is a graduated cylinder used for in a chemistry lab?

A: A graduated cylinder is used for measuring the volume of liquids with precision.

Q: What is a pipette used for in a chemistry lab?

A: A pipette is used for transferring small, precise volumes of liquids.

Q: What is a thermometer used for in a chemistry lab?

A: A thermometer is used for measuring the temperature of substances in a laboratory setting.

Q: What is a centrifuge used for in a chemistry lab?

A: A centrifuge is used for separating substances of different densities by spinning them at high speeds.

Q: What is a spectrophotometer used for in a chemistry lab?

A: A spectrophotometer is used for measuring the intensity of light as it passes through a substance, typically used for determining the concentration of a solution.

Q: What is a pH meter used for in a chemistry lab?

A: A pH meter is used for measuring the acidity or basicity of a solution, typically used to measure pH of liquids.

Q: How does a Bunsen burner work in a chemistry lab?

A: A Bunsen burner works by mixing gas, typically propane or natural gas, with air to produce a flame that can be adjusted in size and intensity.

Q: What is the significance of test tubes in a chemistry lab?

A: Test tubes are significant in a chemistry lab because they allow for small-scale experimentation, observation, and heating of liquids while minimizing the risk of spillage.

Q: Can you explain the purpose of a beaker in a chemistry lab?

A: The purpose of a beaker in a chemistry lab is to hold larger amounts of liquids for mixing, heating or observing chemical reactions. They typically have a flat bottom and straight sides making it easy to read measurements and allowing for easy stirring.

Q: How does a graduated cylinder measure volume?

A: A graduated cylinder measures volume by using a calibrated scale on the side of the cylinder, with volume measurements typically in milliliters or cubic centimeters.

Q: What is the function of a pipette in a chemistry lab?

A: The function of a pipette in a chemistry lab is to transfer small, precise volumes of liquids, typically in the range of microliters to milliliters.

Q: What is the importance of thermometer in a chemistry lab?

A: A thermometer is important in a chemistry lab because it allows for the accurate measurement of temperature, which is a critical aspect in many chemical reactions and experiments.

Q: How does a centrifuge work in a chemistry lab?

A: A centrifuge works by spinning substances at high speeds, typically thousands of revolutions per minute. This causes the denser components of the mixture to separate out and collect at the bottom of the centrifuge tube.

Q: Can you explain the principle behind a spectrophotometer?

A: A spectrophotometer works on the principle that different molecules absorb light at different wavelengths, and by measuring the intensity of light as it passes through a sample, we can determine the concentration of the molecules present in a solution.

Q: Can you explain the working of a pH meter in a chemistry lab?

A: A pH meter works by measuring the electrical potential difference between a pH-sensitive electrode and a reference electrode. The pH-sensitive electrode is sensitive to the hydrogen ion concentration of the solution, so by measuring the potential difference, the pH of the solution can be determined.

How does pH papers work?

pH papers work by using indicator dyes that change color in response to the acidity or basicity of a solution. The color of the dye on the paper will change based on the pH of the solution it is dipped into. The color change corresponds to a specific pH range, and by comparing the color of the paper to a color chart, the pH of the solution can be determined.

It’s a simple and quick method to measure the pH of a solution and is commonly used in labs or in field tests. The accuracy of pH papers can vary depending on the quality of the paper and the indicator dye used. It is not as accurate as a pH meter, but it is a low-cost and convenient alternative.