Question

In a burette, the zero mark on the graduation scale is near its mouth.
A. True
B. False

Answer 1

This question is based on the device that is used in the chemical laboratory. We have to know what the instrument the burette is. The burette is an instrument used in laboratories, which is tapered at one end for delivering known volumes of a liquid, especially in titrations. The burettes are glass volumetric instruments calibrated and are used for titration in volumetric analysis.

Complete step by step answer:
We know that this instrument is mostly used in chemical laboratories to perform various chemical reactions. A burette is an instrument used in chemical laboratories for the dispensing of variable, measured amounts of liquids or solutions. A burette is used in the titration in volumetric analysis. Burette is used to take the reading during the analysis of any experiment. In burette mainly chemical is filled and drop by drop the solution is poured into the flask. A burette stand is required to support the burette.

However, a tapered volumetric burette delivers measured volumes of liquid. So, a burette is used to find the variation between the initial and final volumes of liquid. Therefore the scale on the burette is marked downwards and marks zero at the top, so as to measure the accurate value of volume delivered.

Thus, the above statement is TRUE. That is, the zero mark on the graduation scale is near its mouth.

Note:
In this question, students might get confused between pipette and burette. Students make sure that they know the difference between the terms pipette and burette. A pipette is an instrument that looks like a pipe made up of glass and it is commonly used in chemistry laboratories to move a measured volume of liquid, often as a media dispenser.