Preparation and Properties of Aluminium, its Compounds and Alum
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CHXI11:THE P-BLOCK ELEMENTS

316902 Aluminium is extracted by the electrolysis of

1 alumina
2 bauxite
3 molten cryolite
4 alumina mixed with molten cryolite.
CHXI11:THE P-BLOCK ELEMENTS

316903 In aluminium compounds back bonding is not possible due to

1 \(\mathrm{p}\) - orbitals of \(\mathrm{Al}\) is large, so \(\mathrm{p}-\mathrm{p}\) overlap is not effective
2 Back bonding occurs between the same size of orbitals of small atoms not large atoms.
3 Both (1) and (2)
4 None of the above
CHXI11:THE P-BLOCK ELEMENTS

316904 Which one of the statements is incorrect for aluminium metals?

1 It is a good conductor of heat and electricity
2 It is malleable and ductile
3 It can be welded and cast but difficult to solder
4 Its alloy are heavy
CHXI11:THE P-BLOCK ELEMENTS

316905 Which of the following statements about aluminium chloride is incorrect?

1 It exists as a dimer
2 It is a covalent compound
3 It involves back bonding between \(\mathrm{Cl}\) and \(\mathrm{Al}\)
4 Its aqueous solution conducts electricity
NEET DIGITAL LIBRARY
CHXI11:THE P-BLOCK ELEMENTS

316902 Aluminium is extracted by the electrolysis of

1 alumina
2 bauxite
3 molten cryolite
4 alumina mixed with molten cryolite.
CHXI11:THE P-BLOCK ELEMENTS

316903 In aluminium compounds back bonding is not possible due to

1 \(\mathrm{p}\) - orbitals of \(\mathrm{Al}\) is large, so \(\mathrm{p}-\mathrm{p}\) overlap is not effective
2 Back bonding occurs between the same size of orbitals of small atoms not large atoms.
3 Both (1) and (2)
4 None of the above
CHXI11:THE P-BLOCK ELEMENTS

316904 Which one of the statements is incorrect for aluminium metals?

1 It is a good conductor of heat and electricity
2 It is malleable and ductile
3 It can be welded and cast but difficult to solder
4 Its alloy are heavy
CHXI11:THE P-BLOCK ELEMENTS

316905 Which of the following statements about aluminium chloride is incorrect?

1 It exists as a dimer
2 It is a covalent compound
3 It involves back bonding between \(\mathrm{Cl}\) and \(\mathrm{Al}\)
4 Its aqueous solution conducts electricity
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CHXI11:THE P-BLOCK ELEMENTS

316902 Aluminium is extracted by the electrolysis of

1 alumina
2 bauxite
3 molten cryolite
4 alumina mixed with molten cryolite.
CHXI11:THE P-BLOCK ELEMENTS

316903 In aluminium compounds back bonding is not possible due to

1 \(\mathrm{p}\) - orbitals of \(\mathrm{Al}\) is large, so \(\mathrm{p}-\mathrm{p}\) overlap is not effective
2 Back bonding occurs between the same size of orbitals of small atoms not large atoms.
3 Both (1) and (2)
4 None of the above
CHXI11:THE P-BLOCK ELEMENTS

316904 Which one of the statements is incorrect for aluminium metals?

1 It is a good conductor of heat and electricity
2 It is malleable and ductile
3 It can be welded and cast but difficult to solder
4 Its alloy are heavy
CHXI11:THE P-BLOCK ELEMENTS

316905 Which of the following statements about aluminium chloride is incorrect?

1 It exists as a dimer
2 It is a covalent compound
3 It involves back bonding between \(\mathrm{Cl}\) and \(\mathrm{Al}\)
4 Its aqueous solution conducts electricity
For More Updates join with Us
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CHXI11:THE P-BLOCK ELEMENTS

316902 Aluminium is extracted by the electrolysis of

1 alumina
2 bauxite
3 molten cryolite
4 alumina mixed with molten cryolite.
CHXI11:THE P-BLOCK ELEMENTS

316903 In aluminium compounds back bonding is not possible due to

1 \(\mathrm{p}\) - orbitals of \(\mathrm{Al}\) is large, so \(\mathrm{p}-\mathrm{p}\) overlap is not effective
2 Back bonding occurs between the same size of orbitals of small atoms not large atoms.
3 Both (1) and (2)
4 None of the above
CHXI11:THE P-BLOCK ELEMENTS

316904 Which one of the statements is incorrect for aluminium metals?

1 It is a good conductor of heat and electricity
2 It is malleable and ductile
3 It can be welded and cast but difficult to solder
4 Its alloy are heavy
CHXI11:THE P-BLOCK ELEMENTS

316905 Which of the following statements about aluminium chloride is incorrect?

1 It exists as a dimer
2 It is a covalent compound
3 It involves back bonding between \(\mathrm{Cl}\) and \(\mathrm{Al}\)
4 Its aqueous solution conducts electricity
NEET DIGITAL LIBRARY