ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
CHM192
1 / 50
1) The size of steam bath can be controlled by adding or removing ___________
2 / 50
2) Below the _________ point, solvent will be seen running back into the flask.
3 / 50
3) BrCH2CH2Br represent _________.
4 / 50
4) Heating mantles must be used with variable _______
5 / 50
5) Isomers have different physical properties and _________ chemical properties.
6 / 50
6) Cyclic hydrocarbons are aliphatic compound that have carbon atoms linked _________
7 / 50
7) The viscosity of most liquids varies _________ with temperature.
8 / 50
8) The _________ of a solid is the temperature at which the liquid and solid phases are in equilibrium.
9 / 50
9) Filtration involves the separation of __________ solid materials from a liquid.
10 / 50
10) Some solids begin to ___________ a few degrees below their melting point.
11 / 50
11) Most laboratory __________ are equipped with multiple gas nozzles connected to a central gas source.
12 / 50
12) Bromine water is reacted with I. Butane II. Butene III. Butyne. In which of the/these reactions will bromine water be decolourised?
13 / 50
13) Bunsen burner is used for heating, sterilization and ________
14 / 50
14) Sodium metal _________ on contact with water.
15 / 50
15) The two types of magnetic stirrers are mechanical and _________
16 / 50
16) The heating mantle is safe because it does not produce _________
17 / 50
17) Never place the litmus paper _________ into the solution.
18 / 50
18) When heating beakers with a burner, _________ should be placed between the vessel and the flame.
19 / 50
19) Supercooling occurs when a liquid is cooled __________ its freezing point.
20 / 50
20) Elimination of a molecule of water in alcohol results in Pi-bond formation of _________
21 / 50
21) A Bunsen burner was named after _________ Bunsen.
22 / 50
22) A stirrer hot plate keeps the _________ at a constant temperature while stirring.
23 / 50
23) To write the ______________ formula of hydrocarbon, the hydrogen atoms are grouped with their carbon atom.
24 / 50
24) For temperature above 100oC, __________ baths are generally used
25 / 50
25) __________ is the process of boiling reactants while cooling the vapour and returning it to the flask as liquid.
26 / 50
26) Powerful pumps provide good heat __________ and optimum temperature accuracy.
27 / 50
27) When alcohol is dehydrated, product x is formed. To prevent x from reforming back to alcohol, x is preferably removed by _________
28 / 50
28) __________ flasks are used to prepare solution of a specific concentration.
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29) The simplest formular for representing hydrocarbon is called __________ formular.
30 / 50
30) Proper selection of a suitable type of stirrer requires that you certain ________ variables.
31 / 50
31) The most important applications of magnetic stirring is stirring in a ________ system.
32 / 50
32) Calcium chloride is mostly used as _____.
33 / 50
33) The most common methods of lighting the burner are using a match on a ___________ lighter.
34 / 50
34) When liquid is cooled less than its freezing point, it _________ .
35 / 50
35) _________ is the container used to keep sample dry.
36 / 50
36) Which of these; ethanol and methanol, has higher boiling point and why?
37 / 50
37) A medicine dropper is calibrated by counting the number of drops it produces to make up a ________
38 / 50
38) Hydrocarbons consisting of carbon linked in a single chain are chain aliphatic, those linked by branched chain are called ________
39 / 50
39) Elimination reaction of an alcohol is called _________
40 / 50
40) ________ are used to heat small quantities of substances to very high temperatures.
41 / 50
41) Precision and _________ were still missing with the use of spring balance.
42 / 50
42) In the laboratory, the most common measuring instrument is _________
43 / 50
43) In the reaction of KMnO4 and ethene, the KMnO4 is ________
44 / 50
44) A simple oil bath can be made by heating a _________ of oil on a hot plate.
45 / 50
45) For micro-scale work, a Pasteur dropping ___________ can be used instead of glass funnel.
46 / 50
46) Alkanes are saturated hydrocarbons, cycloalkanes are ____________ hydrocarbons.
47 / 50
47) All edges of glass tubing must be fine-polished to round off the ________ edges.
48 / 50
48) Modern digital weighing scales have many types, styles and _________ ranges.
49 / 50
49) Aqueous ammonia should be used only in the ________ hood.
50 / 50
50) One of the reasons for the vast array of organic compounds is the phenomenon of ____________.
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