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