Basic Lab Operation

Question 1

Type of balance having max capacity of 150-200g with 1mg precision

Answer 1

Macro Balance

Question 2

Type of baance having 10-30g capacity with 0.01mg precision

Answer 2

Semi micro balance

Question 3

Type of balance with 1-3g capacity having 0.001mg precision

Answer 3

Micro balance

Question 4

The mas of an empty sampe container.

Answer 4

Tare

Question 5

The process of setting a balance to zero in the presence of the tare

Answer 5

Taring

Question 6

Most balances permit taring up to ___% of the capacity of the balance

Answer 6

100%

Question 7

Micro L

Answer 7

10^-6L or 10^-3mL

Question 8

____ is marked by a manufacturer indicating the manner of calibration and temperature at whoch it applies

Answer 8

Volumetric equipment

Question 9

Volumetric flask are calibrated to_____

Answer 9

Contain

Question 10

_____ and _____ are calibrated to deliver certain or specified volume

Answer 10

Pipets ang burets

Question 11

_____ and _____ are calibrated to deliver certain or specified volume

Answer 11

Pipets ang burets

Question 12

This permit the transfer of accurately known volume from one container to another

Answer 12

Pipets

Question 13

_____ pipets are calibrated to permit delivery of any voume up to maximum capacity from 0.1-25mL

Answer 13

Measuring pipet

Question 14

____ deivers a single and fixed volume between 0.5-200mL

Answer 14

Volumetric pipet

Question 15

This pipets are used if the liquids left in the pipet has allteady accounted

Answer 15

TD

Question 16

This pipets are used if the liquids eft in the pipet must be blown off the pipet

Answer 16

To contain

Question 17

This VF are calibrated as _____ and they are distinguished by two reference lines on the neck. If the delivery of the stated volume is desired, the flask is filled to the upper line

Answer 17

To deliver basis

Question 18

These are used for measuring and comparing densities or specific gravity of liquids and solids.

Answer 18

Pycnometers

Question 19

The use of _____ helps to avoid leaks, spills of potential harmful and often valuable substances.

Answer 19

Jointed glassware

Question 20

T 19/22
19 is the size of

Answer 20

Widest point

Question 21

T 19/22
22 IS THE

Answer 21

Length of the joint

Question 22

Beakers, flasks, and crucibles should be washed with a _______ solution and then rinsed initially with large amount of tap water and small portion of deionized water

Answer 22

Hot detergent