Question

Volume of single liquid drop can be measured using:
(A) Burette
(B) Pipette
(C) Flask
(D) Measuring Cone

Answer 1

Hint :In order to solve this question, we are going to first analyze all the options and select an option that is the most suitable one. Then, after selecting that option, that one instrument is defined and explained how it can help to measure the volume of a single drop of a liquid.

Complete Step By Step Answer:
The burette is a volumetric measuring glassware which is used in analytical chemistry for the accurate dispensing of a liquid, especially of one of the reagents in a titration. There are graduated marks present in the Burette tube in order to give the measurement of the amount of the liquid contained in the burette tube.
In other words, A Burette is a device used in analytical chemistry for the dispensing of variable, measured amounts of a chemical solution. A volumetric burette delivers measured volumes of liquid.
Thus, by dropping the liquid drop by drop, we can calculate the volume by subtracting the final level from the initial level of the liquid. However, such an arrangement is not given in any of the other options like that in pipette, flask or measuring cone.
Hence, option (A) is the correct answer.

Note :
The burette is used to measure the volume of a substance which is dispensed. However, it is different from a measuring cylinder as its graduations measure from top to bottom. Therefore, the difference between the starting and the final volume is equal to the amount dispensed. The precision and control of the burette over other means of adding solution is beneficial for use in titration.