1
Q
when does litmus paper turn red
A
under acidic conditions
2
Q
when does litmus paper turn blue
A
under basic conditions
3
Q
what are examples of non-calibrated glassware
A
test tubes, beakers, erlenmeyer flasks, round bottom flasks, extraction flask, transfer and pasteur pipets, jars, watch glasses
4
Q
what are examples of calibrated glassware
A
graduated cylinder, buret, graduated and volumetric pipet, volumetric flask
5
Q
when are standard laboratory balances used
A
when weights are in the milligram range
6
Q
when are analytical laboratory balances used
A
for more sensitive weighing applications
DAT gen chem
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