317912
Assertion : TEL is an antiknock compound. Reason : TEL reduces the knocking property of a fuel.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Anti-knocking agent is the substance which increases the octane number of the fuel. It helps in auto-ignition by raising the temperature and pressure. TEL is used as an antiknock compound because it forms ethyl free radical which converts some of the straight chain hydrocarbons into branched chain hydrocarbons, and thus, increases the octane number. So, option (2) is correct.
CHXI13:HYDROCARBONS
317913
Petrochemicals can be used to prepare
1 synthetic fibres
2 pesticides
3 plastics
4 All of the above
Explanation:
Petrochemicals can be used to prepare synthetic fibres, pesticides and plastics etc.
CHXI13:HYDROCARBONS
317914
Which of the following has highest knocking property?
1 Aromatic hydrocarbons
2 Olefins
3 Branched chain paraffins
4 Straight chain paraffins
Explanation:
Knocking character of fuel increases with decrease in octane number of a fuel. The octane number increases in the following order : straight chain alkanes \( < \) branched chain alkanes \( < \) olefins \( < \) cycloalkanes \( < \) aromatic compounds. Since, straight chain alkane (paraffin) has minimum octane number hence, it produces maximum knocking.
AIIMS - 2007
CHXI13:HYDROCARBONS
317915
A petroleum fraction having boiling range \(70-200^{\circ} \mathrm{C}\) and containing \(6-9\) carbon atoms per molecule is called
1 natural gas
2 gas oil
3 gasoline
4 kerosene
Explanation:
Conceptual Questions
CHXI13:HYDROCARBONS
317916
Which of the following has lowest octane number?
1 Iso-octane
2 n-Heptane
3 n-Hexane
4 n-Hexadecane
Explanation:
Longer the straight chain alkane, lower is the octane number. Thus, n-hexadecane has even lower octane number than n-heptane.
317912
Assertion : TEL is an antiknock compound. Reason : TEL reduces the knocking property of a fuel.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Anti-knocking agent is the substance which increases the octane number of the fuel. It helps in auto-ignition by raising the temperature and pressure. TEL is used as an antiknock compound because it forms ethyl free radical which converts some of the straight chain hydrocarbons into branched chain hydrocarbons, and thus, increases the octane number. So, option (2) is correct.
CHXI13:HYDROCARBONS
317913
Petrochemicals can be used to prepare
1 synthetic fibres
2 pesticides
3 plastics
4 All of the above
Explanation:
Petrochemicals can be used to prepare synthetic fibres, pesticides and plastics etc.
CHXI13:HYDROCARBONS
317914
Which of the following has highest knocking property?
1 Aromatic hydrocarbons
2 Olefins
3 Branched chain paraffins
4 Straight chain paraffins
Explanation:
Knocking character of fuel increases with decrease in octane number of a fuel. The octane number increases in the following order : straight chain alkanes \( < \) branched chain alkanes \( < \) olefins \( < \) cycloalkanes \( < \) aromatic compounds. Since, straight chain alkane (paraffin) has minimum octane number hence, it produces maximum knocking.
AIIMS - 2007
CHXI13:HYDROCARBONS
317915
A petroleum fraction having boiling range \(70-200^{\circ} \mathrm{C}\) and containing \(6-9\) carbon atoms per molecule is called
1 natural gas
2 gas oil
3 gasoline
4 kerosene
Explanation:
Conceptual Questions
CHXI13:HYDROCARBONS
317916
Which of the following has lowest octane number?
1 Iso-octane
2 n-Heptane
3 n-Hexane
4 n-Hexadecane
Explanation:
Longer the straight chain alkane, lower is the octane number. Thus, n-hexadecane has even lower octane number than n-heptane.
317912
Assertion : TEL is an antiknock compound. Reason : TEL reduces the knocking property of a fuel.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Anti-knocking agent is the substance which increases the octane number of the fuel. It helps in auto-ignition by raising the temperature and pressure. TEL is used as an antiknock compound because it forms ethyl free radical which converts some of the straight chain hydrocarbons into branched chain hydrocarbons, and thus, increases the octane number. So, option (2) is correct.
CHXI13:HYDROCARBONS
317913
Petrochemicals can be used to prepare
1 synthetic fibres
2 pesticides
3 plastics
4 All of the above
Explanation:
Petrochemicals can be used to prepare synthetic fibres, pesticides and plastics etc.
CHXI13:HYDROCARBONS
317914
Which of the following has highest knocking property?
1 Aromatic hydrocarbons
2 Olefins
3 Branched chain paraffins
4 Straight chain paraffins
Explanation:
Knocking character of fuel increases with decrease in octane number of a fuel. The octane number increases in the following order : straight chain alkanes \( < \) branched chain alkanes \( < \) olefins \( < \) cycloalkanes \( < \) aromatic compounds. Since, straight chain alkane (paraffin) has minimum octane number hence, it produces maximum knocking.
AIIMS - 2007
CHXI13:HYDROCARBONS
317915
A petroleum fraction having boiling range \(70-200^{\circ} \mathrm{C}\) and containing \(6-9\) carbon atoms per molecule is called
1 natural gas
2 gas oil
3 gasoline
4 kerosene
Explanation:
Conceptual Questions
CHXI13:HYDROCARBONS
317916
Which of the following has lowest octane number?
1 Iso-octane
2 n-Heptane
3 n-Hexane
4 n-Hexadecane
Explanation:
Longer the straight chain alkane, lower is the octane number. Thus, n-hexadecane has even lower octane number than n-heptane.
317912
Assertion : TEL is an antiknock compound. Reason : TEL reduces the knocking property of a fuel.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Anti-knocking agent is the substance which increases the octane number of the fuel. It helps in auto-ignition by raising the temperature and pressure. TEL is used as an antiknock compound because it forms ethyl free radical which converts some of the straight chain hydrocarbons into branched chain hydrocarbons, and thus, increases the octane number. So, option (2) is correct.
CHXI13:HYDROCARBONS
317913
Petrochemicals can be used to prepare
1 synthetic fibres
2 pesticides
3 plastics
4 All of the above
Explanation:
Petrochemicals can be used to prepare synthetic fibres, pesticides and plastics etc.
CHXI13:HYDROCARBONS
317914
Which of the following has highest knocking property?
1 Aromatic hydrocarbons
2 Olefins
3 Branched chain paraffins
4 Straight chain paraffins
Explanation:
Knocking character of fuel increases with decrease in octane number of a fuel. The octane number increases in the following order : straight chain alkanes \( < \) branched chain alkanes \( < \) olefins \( < \) cycloalkanes \( < \) aromatic compounds. Since, straight chain alkane (paraffin) has minimum octane number hence, it produces maximum knocking.
AIIMS - 2007
CHXI13:HYDROCARBONS
317915
A petroleum fraction having boiling range \(70-200^{\circ} \mathrm{C}\) and containing \(6-9\) carbon atoms per molecule is called
1 natural gas
2 gas oil
3 gasoline
4 kerosene
Explanation:
Conceptual Questions
CHXI13:HYDROCARBONS
317916
Which of the following has lowest octane number?
1 Iso-octane
2 n-Heptane
3 n-Hexane
4 n-Hexadecane
Explanation:
Longer the straight chain alkane, lower is the octane number. Thus, n-hexadecane has even lower octane number than n-heptane.
317912
Assertion : TEL is an antiknock compound. Reason : TEL reduces the knocking property of a fuel.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Anti-knocking agent is the substance which increases the octane number of the fuel. It helps in auto-ignition by raising the temperature and pressure. TEL is used as an antiknock compound because it forms ethyl free radical which converts some of the straight chain hydrocarbons into branched chain hydrocarbons, and thus, increases the octane number. So, option (2) is correct.
CHXI13:HYDROCARBONS
317913
Petrochemicals can be used to prepare
1 synthetic fibres
2 pesticides
3 plastics
4 All of the above
Explanation:
Petrochemicals can be used to prepare synthetic fibres, pesticides and plastics etc.
CHXI13:HYDROCARBONS
317914
Which of the following has highest knocking property?
1 Aromatic hydrocarbons
2 Olefins
3 Branched chain paraffins
4 Straight chain paraffins
Explanation:
Knocking character of fuel increases with decrease in octane number of a fuel. The octane number increases in the following order : straight chain alkanes \( < \) branched chain alkanes \( < \) olefins \( < \) cycloalkanes \( < \) aromatic compounds. Since, straight chain alkane (paraffin) has minimum octane number hence, it produces maximum knocking.
AIIMS - 2007
CHXI13:HYDROCARBONS
317915
A petroleum fraction having boiling range \(70-200^{\circ} \mathrm{C}\) and containing \(6-9\) carbon atoms per molecule is called
1 natural gas
2 gas oil
3 gasoline
4 kerosene
Explanation:
Conceptual Questions
CHXI13:HYDROCARBONS
317916
Which of the following has lowest octane number?
1 Iso-octane
2 n-Heptane
3 n-Hexane
4 n-Hexadecane
Explanation:
Longer the straight chain alkane, lower is the octane number. Thus, n-hexadecane has even lower octane number than n-heptane.
