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