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