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