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