Which of the following statements best explains cracking ? It is a process
in which an alkene adds on itself repeatedly to form long chain polymers
in which large hydrocarbon molecules are broken into smaller units
for measuring theoctane number of petrol
in which carbon chain results in a zigzag arrangement
in which aromatic hydrocarbons are produced
Correct answer is B
No explanation has been provided for this answer.
The major raw material in a plastic industry is
ethanol
sulphur
methylethanoate
ethene
ethane
Correct answer is D
- Earlier, molasses act as a raw material which yield ethanol from which ETHENE (gotten is used to) produce a range of poly(ethene) plastics.
- Nowadays, starting new raw materials are obtained by the fractional distillation of crude oil or petroleum.
- During the thermal cracking of petroleum; long chain alkanes are converted into smaller chain alkanes, ALKENES (with Ethene being the predominate), etc.
- The Alkenes such as Ethene and Propene can be made into Poly(ethene) / plastic, nylon, etc.
0.224 dm3
0.280 dm3
0.560 dm3
2.24 dm3
22.4 dm3
Correct answer is B
No explanation has been provided for this answer.
- 4176 J
+4176 J
- 900 J
+ 900 J
+8100 J
Correct answer is D
No explanation has been provided for this answer.
The complex salt formed when aluminium dissolves in sodium hydroxide solution is
Na3AI(OH)4
Na2AI(OH)3
NaAI(OH)3
Na4AI(OH)4
NaAI(OH)4
Correct answer is E
No explanation has been provided for this answer.