Group 18 Elements
CHXI11:THE P-BLOCK ELEMENTS

316425 The lowest boiling point of helium is due to its

1 inertness.
2 gaseous nature.
3 high polarisability.
4 weak Van der Waals forces between atoms.
CHXI11:THE P-BLOCK ELEMENTS

316426 Noble gases are adsorbed by

1 anhydrous calcium chloride.
2 ferric hydroxide.
3 conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\).
4 activated coconut charcoal.
CHXI11:THE P-BLOCK ELEMENTS

316427 Read the Statement - A and Statement - B carefully to mark the correct option given below
Statement A :
Noble gases have very high boiling points.
Statement B :
Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316428 Noble gases are adsorbed by

1 Finely divided \(\mathrm{Pd}\) and \(\mathrm{Pt}\)
2 Coconut charcoal
3 Colloidal Pd
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316429 The only type of interatomic interaction in noble gases is

1 Weak dispersion forces
2 H-bonding
3 Covalent bonding
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316425 The lowest boiling point of helium is due to its

1 inertness.
2 gaseous nature.
3 high polarisability.
4 weak Van der Waals forces between atoms.
CHXI11:THE P-BLOCK ELEMENTS

316426 Noble gases are adsorbed by

1 anhydrous calcium chloride.
2 ferric hydroxide.
3 conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\).
4 activated coconut charcoal.
CHXI11:THE P-BLOCK ELEMENTS

316427 Read the Statement - A and Statement - B carefully to mark the correct option given below
Statement A :
Noble gases have very high boiling points.
Statement B :
Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316428 Noble gases are adsorbed by

1 Finely divided \(\mathrm{Pd}\) and \(\mathrm{Pt}\)
2 Coconut charcoal
3 Colloidal Pd
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316429 The only type of interatomic interaction in noble gases is

1 Weak dispersion forces
2 H-bonding
3 Covalent bonding
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316425 The lowest boiling point of helium is due to its

1 inertness.
2 gaseous nature.
3 high polarisability.
4 weak Van der Waals forces between atoms.
CHXI11:THE P-BLOCK ELEMENTS

316426 Noble gases are adsorbed by

1 anhydrous calcium chloride.
2 ferric hydroxide.
3 conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\).
4 activated coconut charcoal.
CHXI11:THE P-BLOCK ELEMENTS

316427 Read the Statement - A and Statement - B carefully to mark the correct option given below
Statement A :
Noble gases have very high boiling points.
Statement B :
Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316428 Noble gases are adsorbed by

1 Finely divided \(\mathrm{Pd}\) and \(\mathrm{Pt}\)
2 Coconut charcoal
3 Colloidal Pd
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316429 The only type of interatomic interaction in noble gases is

1 Weak dispersion forces
2 H-bonding
3 Covalent bonding
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316425 The lowest boiling point of helium is due to its

1 inertness.
2 gaseous nature.
3 high polarisability.
4 weak Van der Waals forces between atoms.
CHXI11:THE P-BLOCK ELEMENTS

316426 Noble gases are adsorbed by

1 anhydrous calcium chloride.
2 ferric hydroxide.
3 conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\).
4 activated coconut charcoal.
CHXI11:THE P-BLOCK ELEMENTS

316427 Read the Statement - A and Statement - B carefully to mark the correct option given below
Statement A :
Noble gases have very high boiling points.
Statement B :
Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316428 Noble gases are adsorbed by

1 Finely divided \(\mathrm{Pd}\) and \(\mathrm{Pt}\)
2 Coconut charcoal
3 Colloidal Pd
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316429 The only type of interatomic interaction in noble gases is

1 Weak dispersion forces
2 H-bonding
3 Covalent bonding
4 None of these
CHXI11:THE P-BLOCK ELEMENTS

316425 The lowest boiling point of helium is due to its

1 inertness.
2 gaseous nature.
3 high polarisability.
4 weak Van der Waals forces between atoms.
CHXI11:THE P-BLOCK ELEMENTS

316426 Noble gases are adsorbed by

1 anhydrous calcium chloride.
2 ferric hydroxide.
3 conc. \(\mathrm{H}_{2} \mathrm{SO}_{4}\).
4 activated coconut charcoal.
CHXI11:THE P-BLOCK ELEMENTS

316427 Read the Statement - A and Statement - B carefully to mark the correct option given below
Statement A :
Noble gases have very high boiling points.
Statement B :
Noble gases are monoatomic gases. They are held together by strong dispersion forces. Because of this they are liquefied at very low temperature. Hence, they have very high boiling points.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
CHXI11:THE P-BLOCK ELEMENTS

316428 Noble gases are adsorbed by

1 Finely divided \(\mathrm{Pd}\) and \(\mathrm{Pt}\)
2 Coconut charcoal
3 Colloidal Pd
4 All of these
CHXI11:THE P-BLOCK ELEMENTS

316429 The only type of interatomic interaction in noble gases is

1 Weak dispersion forces
2 H-bonding
3 Covalent bonding
4 None of these