Alkanes
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CHXI13:HYDROCARBONS

317921 Assertion :
Freezing point of neo-pentane is more than \({\text{n}}\)-pentane.
Reason :
Increase in van der Waals forces increases freezing point.

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.
CHXI13:HYDROCARBONS

317922 What is the range of number of carbon atoms in alkanes found in paraffin wax?

1 \(\mathrm{C}_{21}\) to \(\mathrm{C}_{30}\)
2 \(\mathrm{C}_{19}\) to \(\mathrm{C}_{20}\)
3 \(\mathrm{C}_{6}\) to \(\mathrm{C}_{8}\)
4 \(\mathrm{C}_{17}\) to \(\mathrm{C}_{18}\)
MHTCET - 2020
CHXI13:HYDROCARBONS

317923 Correct order of boiling point is

1 \({\text{n  -  Pentane}} < {\text{neohexane}} < {\text{isohexane}}\)
\( < {\text{3  -  methylpentane}}\)
2 \({\text{Neohexane}} < {\text{n  -  pentane}} < {\text{isohexane}}\)
\( < {\text{3  -  methylpentane}}\)
3 \({\text{3  -  methylpentane}} < {\text{neohexane}} < {\text{n  -  pentane}}\)
\( < {\text{isohexane}}\)
4 \({\text{n  -  Pentane}} < {\text{isohexane}} < {\text{3  -  methylpentane}}\)
\( < {\text{neohexane}}\)
CHXI13:HYDROCARBONS

317924 Statement A :
: The boiling point of three isomeric pentanes follows the order n -pentane \({\mathrm{>}}\) isopentane \({\mathrm{>}}\) neopentane
Statement B :
When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, there by lowering the boiling point.
choose the most appropriate answer from the options given below:

1 Both Statement A and Statement B are correct.
2 Both Statement A and Statement B are incorrect.
3 Statement A is correct but Statement B is incorrect.
4 Statement A is incorrect but Statement B is correct.
NEET - 2024
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CHXI13:HYDROCARBONS

317921 Assertion :
Freezing point of neo-pentane is more than \({\text{n}}\)-pentane.
Reason :
Increase in van der Waals forces increases freezing point.

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.
CHXI13:HYDROCARBONS

317922 What is the range of number of carbon atoms in alkanes found in paraffin wax?

1 \(\mathrm{C}_{21}\) to \(\mathrm{C}_{30}\)
2 \(\mathrm{C}_{19}\) to \(\mathrm{C}_{20}\)
3 \(\mathrm{C}_{6}\) to \(\mathrm{C}_{8}\)
4 \(\mathrm{C}_{17}\) to \(\mathrm{C}_{18}\)
MHTCET - 2020
CHXI13:HYDROCARBONS

317923 Correct order of boiling point is

1 \({\text{n  -  Pentane}} < {\text{neohexane}} < {\text{isohexane}}\)
\( < {\text{3  -  methylpentane}}\)
2 \({\text{Neohexane}} < {\text{n  -  pentane}} < {\text{isohexane}}\)
\( < {\text{3  -  methylpentane}}\)
3 \({\text{3  -  methylpentane}} < {\text{neohexane}} < {\text{n  -  pentane}}\)
\( < {\text{isohexane}}\)
4 \({\text{n  -  Pentane}} < {\text{isohexane}} < {\text{3  -  methylpentane}}\)
\( < {\text{neohexane}}\)
CHXI13:HYDROCARBONS

317924 Statement A :
: The boiling point of three isomeric pentanes follows the order n -pentane \({\mathrm{>}}\) isopentane \({\mathrm{>}}\) neopentane
Statement B :
When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, there by lowering the boiling point.
choose the most appropriate answer from the options given below:

1 Both Statement A and Statement B are correct.
2 Both Statement A and Statement B are incorrect.
3 Statement A is correct but Statement B is incorrect.
4 Statement A is incorrect but Statement B is correct.
NEET - 2024
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CHXI13:HYDROCARBONS

317921 Assertion :
Freezing point of neo-pentane is more than \({\text{n}}\)-pentane.
Reason :
Increase in van der Waals forces increases freezing point.

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.
CHXI13:HYDROCARBONS

317922 What is the range of number of carbon atoms in alkanes found in paraffin wax?

1 \(\mathrm{C}_{21}\) to \(\mathrm{C}_{30}\)
2 \(\mathrm{C}_{19}\) to \(\mathrm{C}_{20}\)
3 \(\mathrm{C}_{6}\) to \(\mathrm{C}_{8}\)
4 \(\mathrm{C}_{17}\) to \(\mathrm{C}_{18}\)
MHTCET - 2020
CHXI13:HYDROCARBONS

317923 Correct order of boiling point is

1 \({\text{n  -  Pentane}} < {\text{neohexane}} < {\text{isohexane}}\)
\( < {\text{3  -  methylpentane}}\)
2 \({\text{Neohexane}} < {\text{n  -  pentane}} < {\text{isohexane}}\)
\( < {\text{3  -  methylpentane}}\)
3 \({\text{3  -  methylpentane}} < {\text{neohexane}} < {\text{n  -  pentane}}\)
\( < {\text{isohexane}}\)
4 \({\text{n  -  Pentane}} < {\text{isohexane}} < {\text{3  -  methylpentane}}\)
\( < {\text{neohexane}}\)
CHXI13:HYDROCARBONS

317924 Statement A :
: The boiling point of three isomeric pentanes follows the order n -pentane \({\mathrm{>}}\) isopentane \({\mathrm{>}}\) neopentane
Statement B :
When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, there by lowering the boiling point.
choose the most appropriate answer from the options given below:

1 Both Statement A and Statement B are correct.
2 Both Statement A and Statement B are incorrect.
3 Statement A is correct but Statement B is incorrect.
4 Statement A is incorrect but Statement B is correct.
NEET - 2024
NEET DIGITAL LIBRARY
CHXI13:HYDROCARBONS

317921 Assertion :
Freezing point of neo-pentane is more than \({\text{n}}\)-pentane.
Reason :
Increase in van der Waals forces increases freezing point.

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.
CHXI13:HYDROCARBONS

317922 What is the range of number of carbon atoms in alkanes found in paraffin wax?

1 \(\mathrm{C}_{21}\) to \(\mathrm{C}_{30}\)
2 \(\mathrm{C}_{19}\) to \(\mathrm{C}_{20}\)
3 \(\mathrm{C}_{6}\) to \(\mathrm{C}_{8}\)
4 \(\mathrm{C}_{17}\) to \(\mathrm{C}_{18}\)
MHTCET - 2020
CHXI13:HYDROCARBONS

317923 Correct order of boiling point is

1 \({\text{n  -  Pentane}} < {\text{neohexane}} < {\text{isohexane}}\)
\( < {\text{3  -  methylpentane}}\)
2 \({\text{Neohexane}} < {\text{n  -  pentane}} < {\text{isohexane}}\)
\( < {\text{3  -  methylpentane}}\)
3 \({\text{3  -  methylpentane}} < {\text{neohexane}} < {\text{n  -  pentane}}\)
\( < {\text{isohexane}}\)
4 \({\text{n  -  Pentane}} < {\text{isohexane}} < {\text{3  -  methylpentane}}\)
\( < {\text{neohexane}}\)
CHXI13:HYDROCARBONS

317924 Statement A :
: The boiling point of three isomeric pentanes follows the order n -pentane \({\mathrm{>}}\) isopentane \({\mathrm{>}}\) neopentane
Statement B :
When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, there by lowering the boiling point.
choose the most appropriate answer from the options given below:

1 Both Statement A and Statement B are correct.
2 Both Statement A and Statement B are incorrect.
3 Statement A is correct but Statement B is incorrect.
4 Statement A is incorrect but Statement B is correct.
NEET - 2024
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