1 / 54
A. Bunsen burner is used for heating, sterilization and ________
2 / 54
B. A stirrer hot plate keeps the _________ at a constant temperature while stirring.
3 / 54
C. Isomers have different physical properties and _________ chemical properties.
4 / 54
D. Modern digital weighing scales __________ results very precisely.
5 / 54
E. Modern digital weighing scales have many types, styles and _________ ranges.
6 / 54
F. Which of these; ethanol and methanol, has higher boiling point and why?
7 / 54
G. The most important applications of magnetic stirring is stirring in a ________ system.
8 / 54
H. When alcohol is dehydrated, product x is formed. To prevent x from reforming back to alcohol, x is preferably removed by _________
9 / 54
I. All edges of glass tubing must be fine-polished to round off the ________ edges.
10 / 54
J. __________ is the process of boiling reactants while cooling the vapour and returning it to the flask as liquid.
11 / 54
K. In the laboratory, the most common measuring instrument is _________
12 / 54
L. Calcium chloride is mostly used as _____.
13 / 54
M. When liquid is cooled less than its freezing point, it _________ .
14 / 54
N. __________ flasks are used to prepare solution of a specific concentration.
15 / 54
O. The size of steam bath can be controlled by adding or removing ___________
16 / 54
P. Never place the litmus paper _________ into the solution.
17 / 54
Q. BrCH2CH2Br represent _________.
18 / 54
R. NaOH is ________ and can eat away living tissues.
19 / 54
S. A medicine dropper is calibrated by counting the number of drops it produces to make up a ________
20 / 54
T. One of the reasons for the vast array of organic compounds is the phenomenon of ____________.
21 / 54
U. To write the ______________ formula of hydrocarbon, the hydrogen atoms are grouped with their carbon atom.
22 / 54
V. Below the _________ point, solvent will be seen running back into the flask.
23 / 54
W. A Bunsen burner was named after _________ Bunsen.
24 / 54
X. Powerful pumps provide good heat __________ and optimum temperature accuracy.
25 / 54
Y. The two types of magnetic stirrers are mechanical and _________
26 / 54
Z. Which of the following reactions (1) substitution (2) addition (3) reaction with sulphuric acid, is/are not common to alkanes?
27 / 54
AA. Some solids begin to ___________ a few degrees below their melting point.
28 / 54
AB. Aqueous ammonia should be used only in the ________ hood.
29 / 54
AC. In the reaction of KMnO4 and ethene, the KMnO4 is ________
30 / 54
AD. When heating beakers with a burner, _________ should be placed between the vessel and the flame.
31 / 54
AE. The heating mantle is safe because it does not produce _________
32 / 54
AF. Sodium metal _________ on contact with water.
33 / 54
AG. The shrinkage of a solid being heated is called _____.
34 / 54
AH. Cyclic hydrocarbons are aliphatic compound that have carbon atoms linked _________
35 / 54
AI. The _________ of a solid is the temperature at which the liquid and solid phases are in equilibrium.
36 / 54
AJ. For micro-scale work, a Pasteur dropping ___________ can be used instead of glass funnel.
37 / 54
AK. Elimination reaction of an alcohol is called _________
38 / 54
AL. Bromine water is reacted with I. Butane II. Butene III. Butyne. In which of the/these reactions will bromine water be decolourised?
39 / 54
AM. ________ are used to heat small quantities of substances to very high temperatures.
40 / 54
AN. A simple oil bath can be made by heating a _________ of oil on a hot plate.
41 / 54
AO. Hydrocarbons consisting of carbon linked in a single chain are chain aliphatic, those linked by branched chain are called ________
42 / 54
AP. Heating mantles must be used with variable _______
43 / 54
AQ. Alkanes are saturated hydrocarbons, cycloalkanes are ____________ hydrocarbons.
44 / 54
AR. The most common methods of lighting the burner are using a match on a ___________ lighter.
45 / 54
AS. The simplest formular for representing hydrocarbon is called __________ formular.
46 / 54
AT. Most laboratory __________ are equipped with multiple gas nozzles connected to a central gas source.
47 / 54
AU. Elimination of a molecule of water in alcohol results in Pi-bond formation of _________
48 / 54
AV. Proper selection of a suitable type of stirrer requires that you certain ________ variables.
49 / 54
AW. Precision and _________ were still missing with the use of spring balance.
50 / 54
AX. Supercooling occurs when a liquid is cooled __________ its freezing point.
51 / 54
AY. _________ is the container used to keep sample dry.
52 / 54
AZ. The viscosity of most liquids varies _________ with temperature.
53 / 54
BA. Filtration involves the separation of __________ solid materials from a liquid.
54 / 54
BB. For temperature above 100oC, __________ baths are generally used
Rate this quiz