Question

1. Arrange the following step in proper sequence
a. Burette fix on a burette stand
b. Observed the level of water in burette
c. Take 25 mL burette
d. Take 10 mL of distilled water by pipette
e. Add 10 mL water from pipette to the burette
f. Fill the burette upto 10 mL with water​

Answer 1

Steps are arranged below-

c. Take 25 mL burette

a. Burette fix on a burette stand

f. Fill the burette upto 10 mL with water

d. Take 10 mL of distilled water by pipette

e. Add 10 mL water from pipette to the burette

b. Observed the level of water in burette

The above steps are done usually in the experiment of titration. Controlled amount of liquid from burette is released into the flask, to check for the colour change.

Answer 2

The correct steps and identification of the process are given below.

• The correct sequence is c, a, f, d, e, b.

c. Take 25 mL burette.  

a. Burette fix on a burette stand.  

f. Fill the burette up to 10 mL with water.  

d. Take 10 mL of distilled water by pipette.  

e. Add 10 mL water from a pipette to the burette.  

b. Observed the level of water in the burette.

• This process is titration which is a common laboratory method of quantitative chemical analysis to determine the concentration of an identified analyte.