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