WorksheetsChemistry Revision Fun Quiz
Total questions: 20
Worksheet time: 11mins
Tips to writing a balanced chemical equation. Example C7H18 + O2 --> CO2 + H2O
oxygen atom as last to balance
carbon atom as last to balance
hydrogen atom as last to balance
none of the above
C7H18 + X O2 --> 7CO2 + 8H2O. The X is ...
9
10
11
11.5
Acid reacts with base to produce
salt and water
salt
solid
solid and water
Copper reacts with sodium nitrate to produce
copper nitrate and sodium
copper nitrate
sodium copper nitrate
none of the answers
if 44 g of propane completely react with 160 g of oxygen, determine the volume of CO2 produced.
71.9 dm3
67.1 dm3
50.0 dm3
63.2 dm3
Determine the % yield. From the experiment, it yields 63.6 g of chlorobenzene, but the experimental data is 73.0 g.
100%
90%
88.0 %
88.6 %
Which of the following has hydrogen bonding as intermolecular forces.
Cl2
H2O
HCl
none of the answers
Which of the following is non-polar molecules?
Cl2
HCl
The liquid is more viscosity and more thicker. What is the reason?
Due to its stickyness
Due to its viscousness
Due to intermolecular bonding
Due to intramolecular bonding
Which of the following conditions favor the liquification of methane. Choose the best answer.
Below compressibility factor of 1.0
more than 250 atm and compressibility factor below 1.0
less than 250 atm and compressibility factor above 1.0
less than 250 atm and compressibility factor below 1.0
Methane gas is very volatile. Why can the methane gas be liquified?
Apply real gas concept
Apply ideal gas concept
Apply the condensation concept
none of the above
For a methane gas to be liquified, according to the Real Gas Law, in a closed container
Apply high pressure, the gas molecules will be packed and there is volume
Apply low pressure, the gas molecules will be packed and there is volume
The molecules form intermolecular forces within each other. Hence they are packed to form liquid. Decreasing the temperature will also help by slowing the molecules.
The molecules form intermolecular forces within each other. Hence they are packed to form liquid. Increasing the temperature will also help by slowing the molecules.
Identify the following phase diagram
Wet gas
Dry gas
Gas condensate
Black oil
Identify the following phase diagram
Wet gas
Volatile Oil
Gas condensate
Dry Gas
High surface tension if
Adhesive forces greater than cohesive forces
Cohesive forces equal to adhesive forces
Cohesive forces greater than adhesive forces
none of the above
The contact angle is is between 90o and 180o. The degree of wetting is .....
low wetting
high wetting
perfect wetting
non-wetting
What is the purpose of wetting agent?
To wet the surface
To reduce the surface tension to allow the liquid to spread on surface
To increase the surface tension to allow the liquid to spread on surface
To dry the surface
The surface tension of paints and other surface coatings is careful designed to ensure that the coating spreads easily while maintaining a desired film thickness. Which is favored?
High surface tension
Low surface tension
Petroleum engineers, geologists and petrophysicists use their understanding of surface tension and capillary action to evaluate reservoir rock quality. Which is favor? There are two answers.
Low surface tension
High surface tension
Low capillary pressure
Low surface tension
How does oil recovery method (water flooding) works?
A water-wet rock sample containing hydrocarbon. If inject with water, the water stick inside the rock
An oil-wet rock sample containing hydrocarbon. If inject with water, water replace the oil, and the oil will come out
A water-wet rock sample containing hydrocarbon. If inject with water, the water replace the oil, and the oil will come out
it floods the reservoir. all oil will come out
