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