J. What precautions should we take while measuring the volume
of liquid having concave meniscus?​

The line of sight must be perpendicular to measuring scale to avoid parallax error. Formation of bubbles inside the cylinder should be completely avoided.

Explanation:

Here is your answer : )

Explanation:

these are precautions

The line of sight must be perpendicular to measuring scale to avoid parallax error. Formation of bubbles inside the cylinder should be completely avoided

hope you like the answer

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;