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