Loading...




Category: CHM192

0

CHM192

1 / 50

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

2 / 50

Aqueous ammonia should be used only in the ________ hood.

3 / 50

The simplest formular for representing hydrocarbon is called __________ formular.

4 / 50

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

5 / 50

Powerful pumps provide good heat __________ and optimum temperature accuracy.

6 / 50

Never place the litmus paper _________ into the solution.

7 / 50

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

8 / 50

Calcium chloride is mostly used as _____.

9 / 50

_________ is the container used to keep sample dry.

10 / 50

NaOH is ________ and can eat away living tissues.

11 / 50

Alkanes are saturated hydrocarbons, cycloalkanes are ____________ hydrocarbons.

12 / 50

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

13 / 50

Precision and _________ were still missing with the use of spring balance.

14 / 50

The viscosity of most liquids varies _________ with temperature.

15 / 50

Isomers have different physical properties and _________ chemical properties.

16 / 50

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

17 / 50

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

18 / 50

In the reaction of KMnO4 and ethene, the KMnO4 is ________

19 / 50

Cyclic hydrocarbons are aliphatic compound that have carbon atoms linked _________

20 / 50

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

21 / 50

For temperature above 100oC, __________ baths are generally used

22 / 50

The two types of magnetic stirrers are mechanical and _________

23 / 50

Elimination reaction of an alcohol is called _________

24 / 50

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

25 / 50

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

26 / 50

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

27 / 50

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

28 / 50

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

29 / 50

BrCH2CH2Br represent _________.

30 / 50

The shrinkage of a solid being heated is called _____.

31 / 50

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

32 / 50

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

33 / 50

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

34 / 50

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

35 / 50

In the laboratory, the most common measuring instrument is _________

36 / 50

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

37 / 50

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

38 / 50

Modern digital weighing scales __________ results very precisely.

39 / 50

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

40 / 50

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

41 / 50

A Bunsen burner was named after _________ Bunsen.

42 / 50

Elimination of a molecule of water in alcohol results in Pi-bond formation of _________

43 / 50

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

44 / 50

Heating mantles must be used with variable _______

45 / 50

The heating mantle is safe because it does not produce _________

46 / 50

When liquid is cooled less than its freezing point, it _________ .

47 / 50

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

48 / 50

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

49 / 50

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

50 / 50

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

Rate this quiz