Carbon and its Compounds
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CHXI11:THE P-BLOCK ELEMENTS

316133 Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite

1 is an allotropic form of carbon
2 is a non - crystalline substance
3 has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
4 has molecules of variable molecular masses like polymers.
KCET - 2007
CHXI11:THE P-BLOCK ELEMENTS

316134 Consider the following statements.
I. Graphite has planar hexagonal layers of carbon atoms in which each carbon atom undergoes \({\text{s}}{{\text{p}}^{\text{2}}}\) hybridisation.
II. Fullerence have smooth structure having 'danglings' bond.
III. In diamond, each atom is linked tetrahedrally to four other carbon atoms by \({\text{s}}{{\text{p}}^{\text{3}}}\) hybridised bonds.
The correct statement(s) is/are

1 Both I and III
2 Only III
3 Both I and II
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316135 Which of the following allotropic forms of carbon is isomorphous with crystalline silicon?

1 Graphite
2 Coal
3 Coke
4 Diamond
CHXI11:THE P-BLOCK ELEMENTS

316136 Assertion :
In \(\mathrm{C}_{60}\) fullerene is an allotrope of carbon.
Reason :
In \(\mathrm{C}_{60}\) fullerene, five-membered rings are isolated from each other.

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.
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CHXI11:THE P-BLOCK ELEMENTS

316133 Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite

1 is an allotropic form of carbon
2 is a non - crystalline substance
3 has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
4 has molecules of variable molecular masses like polymers.
KCET - 2007
CHXI11:THE P-BLOCK ELEMENTS

316134 Consider the following statements.
I. Graphite has planar hexagonal layers of carbon atoms in which each carbon atom undergoes \({\text{s}}{{\text{p}}^{\text{2}}}\) hybridisation.
II. Fullerence have smooth structure having 'danglings' bond.
III. In diamond, each atom is linked tetrahedrally to four other carbon atoms by \({\text{s}}{{\text{p}}^{\text{3}}}\) hybridised bonds.
The correct statement(s) is/are

1 Both I and III
2 Only III
3 Both I and II
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316135 Which of the following allotropic forms of carbon is isomorphous with crystalline silicon?

1 Graphite
2 Coal
3 Coke
4 Diamond
CHXI11:THE P-BLOCK ELEMENTS

316136 Assertion :
In \(\mathrm{C}_{60}\) fullerene is an allotrope of carbon.
Reason :
In \(\mathrm{C}_{60}\) fullerene, five-membered rings are isolated from each other.

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.
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CHXI11:THE P-BLOCK ELEMENTS

316133 Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite

1 is an allotropic form of carbon
2 is a non - crystalline substance
3 has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
4 has molecules of variable molecular masses like polymers.
KCET - 2007
CHXI11:THE P-BLOCK ELEMENTS

316134 Consider the following statements.
I. Graphite has planar hexagonal layers of carbon atoms in which each carbon atom undergoes \({\text{s}}{{\text{p}}^{\text{2}}}\) hybridisation.
II. Fullerence have smooth structure having 'danglings' bond.
III. In diamond, each atom is linked tetrahedrally to four other carbon atoms by \({\text{s}}{{\text{p}}^{\text{3}}}\) hybridised bonds.
The correct statement(s) is/are

1 Both I and III
2 Only III
3 Both I and II
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316135 Which of the following allotropic forms of carbon is isomorphous with crystalline silicon?

1 Graphite
2 Coal
3 Coke
4 Diamond
CHXI11:THE P-BLOCK ELEMENTS

316136 Assertion :
In \(\mathrm{C}_{60}\) fullerene is an allotrope of carbon.
Reason :
In \(\mathrm{C}_{60}\) fullerene, five-membered rings are isolated from each other.

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.
For More Updates join with Us
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
CHXI11:THE P-BLOCK ELEMENTS

316133 Graphite is a soft solid lubricant extremely difficult to melt. The reason for this anomalous behaviour is that graphite

1 is an allotropic form of carbon
2 is a non - crystalline substance
3 has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
4 has molecules of variable molecular masses like polymers.
KCET - 2007
CHXI11:THE P-BLOCK ELEMENTS

316134 Consider the following statements.
I. Graphite has planar hexagonal layers of carbon atoms in which each carbon atom undergoes \({\text{s}}{{\text{p}}^{\text{2}}}\) hybridisation.
II. Fullerence have smooth structure having 'danglings' bond.
III. In diamond, each atom is linked tetrahedrally to four other carbon atoms by \({\text{s}}{{\text{p}}^{\text{3}}}\) hybridised bonds.
The correct statement(s) is/are

1 Both I and III
2 Only III
3 Both I and II
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316135 Which of the following allotropic forms of carbon is isomorphous with crystalline silicon?

1 Graphite
2 Coal
3 Coke
4 Diamond
CHXI11:THE P-BLOCK ELEMENTS

316136 Assertion :
In \(\mathrm{C}_{60}\) fullerene is an allotrope of carbon.
Reason :
In \(\mathrm{C}_{60}\) fullerene, five-membered rings are isolated from each other.

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.
NEET DIGITAL LIBRARY