Question

............ is a long narrow tube with a
cylindrical bulb in the middle and a
safety bulb.
A
Burette
B
volumetric flask
C
conical flask
D Pipette​

Answer 1

(b).volumentric flask is the answer

Answer 2

d) pipette is a long narrow tube with a cylindrical bulb in the middle and a safety bulb.

• Pipette is a long narrow tube used in the laboratory.
• It is used to transfer a measured amount of liquid.
• Pipettes offer high precision and accuracy.  
• the first pipette was made in glass and after that, it continued to be formed in plastics.
• still, large pipettes are being made in glass.
• pipettes that dispense liquid in 1 and 1000 μl are called micropipettes
• pipettes that transfer a high amount of liquid are called micropipettes.
• pipettes are of various types like air displacement pipettes, electronic pipette, positive displacement pipettes, and volumetric pipette.

#SPJ2