CHM192




Category: CHM192

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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) Aqueous ammonia should be used only in the ________ hood.

2 / 50

2) Proper selection of a suitable type of stirrer requires that you certain ________ variables.

3 / 50

3) Powerful pumps provide good heat __________ and optimum temperature accuracy.

4 / 50

4) Modern digital weighing scales __________ results very precisely.

5 / 50

5) The most common methods of lighting the burner are using a match on a ___________ lighter.

6 / 50

6) A Bunsen burner was named after _________ Bunsen.

7 / 50

7) _________ is the container used to keep sample dry.

8 / 50

8) The size of steam bath can be controlled by adding or removing ___________

9 / 50

9) Isomers have different physical properties and _________ chemical properties.

10 / 50

10) Alkanes are saturated hydrocarbons, cycloalkanes are ____________ hydrocarbons.

11 / 50

11) A stirrer hot plate keeps the _________ at a constant temperature while stirring.

12 / 50

12) Bromine water is reacted with I. Butane II. Butene III. Butyne. In which of the/these reactions will bromine water be decolourised?

13 / 50

13) The heating mantle is safe because it does not produce _________

14 / 50

14) Which of these; ethanol and methanol, has higher boiling point and why?

15 / 50

15) In the laboratory, the most common measuring instrument is _________

16 / 50

16) When alcohol is dehydrated, product x is formed. To prevent x from reforming back to alcohol, x is preferably removed by _________

17 / 50

17) Filtration involves the separation of __________ solid materials from a liquid.

18 / 50

18) Hydrocarbons consisting of carbon linked in a single chain are chain aliphatic, those linked by branched chain are called ________

19 / 50

19) To write the ______________ formula of hydrocarbon, the hydrogen atoms are grouped with their carbon atom.

20 / 50

20) __________ is the process of boiling reactants while cooling the vapour and returning it to the flask as liquid.

21 / 50

21) The simplest formular for representing hydrocarbon is called __________ formular.

22 / 50

22) Calcium chloride is mostly used as _____.

23 / 50

23) NaOH is ________ and can eat away living tissues.

24 / 50

24) A simple oil bath can be made by heating a _________ of oil on a hot plate.

25 / 50

25) Supercooling occurs when a liquid is cooled __________ its freezing point.

26 / 50

26) When heating beakers with a burner, _________ should be placed between the vessel and the flame.

27 / 50

27) Which of the following reactions (1) substitution (2) addition (3) reaction with sulphuric acid, is/are not common to alkanes?

28 / 50

28) The most important applications of magnetic  stirring is stirring in a ________ system.

29 / 50

29) Elimination reaction of an alcohol is called _________

30 / 50

30) The two types of magnetic stirrers are mechanical and _________

31 / 50

31) Cyclic hydrocarbons are aliphatic compound that have carbon atoms linked _________

32 / 50

32) For micro-scale work, a Pasteur dropping ___________ can be used instead of glass funnel.

33 / 50

33) Most laboratory __________ are equipped with multiple gas nozzles connected to a central gas source.

34 / 50

34) Never place the litmus paper _________ into the solution.

35 / 50

35) All edges of glass tubing must be fine-polished to round off the ________ edges.

36 / 50

36) Below the _________ point, solvent will be seen running back into the flask.

37 / 50

37) ________ are used to heat small quantities of substances to very high temperatures.

38 / 50

38) Heating mantles must be used with variable _______

39 / 50

39) Modern digital weighing scales have many types, styles and _________ ranges.

40 / 50

40) __________ flasks are used to prepare solution of a specific concentration.

41 / 50

41) The viscosity of most liquids varies _________ with temperature.

42 / 50

42) Some solids begin to ___________ a few degrees below their melting point.

43 / 50

43) Bunsen burner is used for heating, sterilization and ________

44 / 50

44) For temperature above 100oC, __________ baths are generally used

45 / 50

45) BrCH2CH2Br represent _________.

46 / 50

46) Sodium metal _________ on contact with water.

47 / 50

47) One of the reasons for the vast array of organic compounds is the phenomenon of ____________.

48 / 50

48) The shrinkage of a solid being heated is called _____.

49 / 50

49) A medicine dropper is calibrated by counting the number of drops it produces to make up a ________

50 / 50

50) The _________ of a solid is the temperature at which the liquid and solid phases are in equilibrium.

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