Which of the following cyclic molecules is an arene (aromatic)? [dfmc-1]
molecule W
molecule X
molecule Y
molecule Z
Which of the following cyclic molecules is an alkane? [dfmc-2]
molecule W
molecule X
molecule Y
molecule Z
Which of the following cyclic molecules is an alkene? [dfmc-3]
molecule W
molecule X
molecule Y
molecule Z
Which of the following cyclic molecules is an ether? [dfmc-4]
molecule W
molecule X
molecule Y
molecule Z
Which of the following conversions corresponds to a 'reforming' process? [dfmc-5]
heptane to methylbenzene
heptane to 3-methylhexane
heptane to propene and butane
heptane to 2,2,3-trimethylbutane
Which of the following conversions corresponds to a 'cracking' process? [dfmc-6]
heptane to methylbenzene
heptane to 3-methylhexane
heptane to propene and butane
heptane to 2,2,3-trimethylbutane
Which of the following conversions corresponds to an 'isomerisation' process? [dfmc-7]
heptane to methylbenzene
heptane to heptene
heptane to propene and butane
heptane to 2,2,3-trimethylbutane
Which four numbers a, b, c and d are required to balance the equation ... a CH_{4(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-8]
1 2 1 2
1 1 1 2
1 2 2 1
1 1 1 1
Which four numbers a, b, c and d are required to balance the equation ... a C_{2}H_{6(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-9]
1 2 1 3
2 7 4 6
2 4 4 6
1 7 2 3
Which four numbers a, b, c and d are required to balance the equation ... a C_{3}H_{8(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-10]
1 3 3 4
2 10 4 6
1 5 3 4
2 5 2 3
Which four numbers a, b, c and d are required to balance the equation ... a C_{4}H_{10(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-11]
1 13 8 4
2 7 4 10
1 5 3 4
2 13 8 10
Which four numbers a, b, c and d are required to balance the equation ... a C_{5}H_{12(l)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-12]
1 8 5 6
1 4 4 6
2 4 5 12
2 8 10 12
Which four numbers a, b, c and d are required to balance the equation ... a C_{6}H_{14(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-13]
2 9 6 14
2 19 12 14
1 9 6 7
1 10 12 7
Which four numbers a, b, c and d are required to balance the equation ... a C_{7}H_{16(l)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-14]
1 5 7 8
2 12 14 16
1 11 7 8
2 11 14 16
Which four numbers a, b, c and d are required to balance the equation ... a C_{8}H_{18(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-15]
1 13 8 18
1 13 8 9
2 13 16 18
2 25 16 18
Which four numbers a, b, c and d are required to balance the equation ... a C_{2}H_{4(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-16]
1 3 2 2
1 2 2 2
2 3 4 4
2 6 4 4
Which four numbers a, b, c and d are required to balance the equation ... a C_{3}H_{6(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-17]
2 5 6 6
2 9 6 6
1 5 3 3
1 9 3 3
Which four numbers a, b, c and d are required to balance the equation ... a C_{4}H_{8(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-18]
2 12 8 8
2 6 8 8
1 6 4 4
1 3 4 4
Which four numbers a, b, c and d are required to balance the equation ... a C_{7}H_{8(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfmc-19]
2 9 4 8
2 10 14 8
1 5 7 4
1 9 7 4
Which of the following molecules has the highest boiling point? [dfmc-20]
Which of the following molecules has the lowest octane rating? [dfmc-21]
Which of the following molecules has the lowest boiling point? [dfmc-22]
Which of the following molecules has the highest octane rating? [dfmc-23]
Which of the following molecules has the highest boiling point? [dfmc-24]
Between which of the following molecules do you get hydrogen bonding? [dfmc-25]
Which word means breaking larger alkane molecules into smaller ones? [dfmc-26]
polymerisation
cracking
reforming
isomerisation
Which word means changing changing the structural formula of a molecule without changing the molecular formula? [dfmc-27]
polymerisation
isomerisation
reforming
cracking
Which word means changing open chain alkanes into cycloalkanes and arenes? [dfmc-28]
polymerisation
isomerisation
reforming
cracking
What word means breaking down larger hydrocarbons into smaller ones? [dfsa-1]
What word describes producing a more branched hydrocarbon from a straight chain one of same molecular formula? [dfsa-2]
What word describes the petrochemical industry process of converting straight chain alkanes into cycloalkanes, cycloalkenes and aromatics? [dfsa-3]
What is the molecular formula of ? [dfsa-4]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a CH_{4(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-5]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{2}H_{6(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-6]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{3}H_{8(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-7]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{4}H_{10(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-8]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{5}H_{12(l)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-9]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{6}H_{14(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-10]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{7}H_{16(l)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-11]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{8}H_{18(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-12]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{2}H_{4(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-13]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{3}H_{6(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-14]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{4}H_{8(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-15]
Which four numbers a, b, c and d are required to balance the equation ... (enter the LOWEST WHOLE NUMBERS with SPACES between them) a C_{7}H_{8(g)} + b O_{2(g)} ==> c CO_{2(g)} + d H_{2}O_{(l)} ? [dfsa-16]
Given the equation for the complete combustion of ethylbenzene ... 2C_{8}H_{10(g)} + 21O_{2(g)} ==> 16CO_{2(g)} + 10H_{2}O_{(l)} what volume, in cm^{3}, of oxygen, is needed to completely burn 10cm^{3} of vaporised ethylbenzene? (all gas volumes are measured at the same temperature and pressure) [dfsa-17]
Given the equation for the complete combustion of ethylbenzene ... 2C_{8}H_{10(g)} + 21O_{2(g)} ==> 16CO_{2(g)} + 10H_{2}O_{(l)} what volume, in cm^{3}, of carbon dioxide, is formed on completely burning 20cm^{3} of vaporised ethylbenzene? (all gas volumes are measured at the same temperature and pressure) [dfsa-18]
Given the equation for the complete combustion of ethylbenzene ... 2C_{8}H_{10(g)} + 21O_{2(g)} ==> 16CO_{2(g)} + 10H_{2}O_{(l)} what volume, in cm^{3}, of air, is needed to completely burn 30cm^{3} of vaporised ethylbenzene? (all gas volumes are measured at the same temperature and pressure, assume air is 21% oxygen) [dfsa-19]
Given the equation for the complete combustion of ethylbenzene ... 2C_{8}H_{10(g)} + 21O_{2(g)} ==> 16CO_{2(g)} + 10H_{2}O_{(l)} what volume, in cm^{3}, of ethylbenzene, is burned completely by 3dm^{3} of air? (all gas volumes are measured at the same temperature and pressure, assume air is 21% oxygen) [dfsa-20]
Given the equation for the complete combustion of ethylbenzene ... 2C_{8}H_{10(g)} + 21O_{2(g)} ==> 16CO_{2(g)} + 10H_{2}O_{(l)} what volume, in cm^{3}, of ethylbenzene, is burned completely by 225^{3} of air? (3 sig fig answer, all gas volumes are measured at the same temperature and pressure, assume air is 21% oxygen) [dfsa-21]
Enter specific words e.g. topic, formula, compound, reaction, anything!