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