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