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