Boron and its Compounds
CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas BF3 is gas at room temperature because of

1 strong hydrogen bond in boric acid
2 strong van der Waals' interaction in boric acid
3 strong ionic bond in boric acid.
4 strong covalent bond in BF3
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
B(OH)3 + 2H2O[B(OH)4] -  + H3O + ; B(OH)3 functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
CHXI11:THE P-BLOCK ELEMENTS

316111 Assertion :
Boric acid acts as a strong acid in presence of catechol.
Reason :
Boric acid does not act as a proton donor but behaves as a Lewis acid.

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.
CHXI11:THE P-BLOCK ELEMENTS

316112 The incorrect statement from the following for borazine is

1 It has electronic delocalization.
2 It can react with water.
3 It is a cyclic compound.
4 It contains banana bonds.
CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas BF3 is gas at room temperature because of

1 strong hydrogen bond in boric acid
2 strong van der Waals' interaction in boric acid
3 strong ionic bond in boric acid.
4 strong covalent bond in BF3
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal Na2 B4O710H2O
2 Boric acid HBO2
3 Kernite B3 N3H6
4 Colemanite Ca2 B6O11
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
B(OH)3 + 2H2O[B(OH)4] -  + H3O + ; B(OH)3 functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
CHXI11:THE P-BLOCK ELEMENTS

316111 Assertion :
Boric acid acts as a strong acid in presence of catechol.
Reason :
Boric acid does not act as a proton donor but behaves as a Lewis acid.

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.
CHXI11:THE P-BLOCK ELEMENTS

316112 The incorrect statement from the following for borazine is

1 It has electronic delocalization.
2 It can react with water.
3 It is a cyclic compound.
4 It contains banana bonds.
CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas BF3 is gas at room temperature because of

1 strong hydrogen bond in boric acid
2 strong van der Waals' interaction in boric acid
3 strong ionic bond in boric acid.
4 strong covalent bond in BF3
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal Na2 B4O710H2O
2 Boric acid HBO2
3 Kernite B3 N3H6
4 Colemanite Ca2 B6O11
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
B(OH)3 + 2H2O[B(OH)4] -  + H3O + ; B(OH)3 functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
CHXI11:THE P-BLOCK ELEMENTS

316111 Assertion :
Boric acid acts as a strong acid in presence of catechol.
Reason :
Boric acid does not act as a proton donor but behaves as a Lewis acid.

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.
CHXI11:THE P-BLOCK ELEMENTS

316112 The incorrect statement from the following for borazine is

1 It has electronic delocalization.
2 It can react with water.
3 It is a cyclic compound.
4 It contains banana bonds.
CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas BF3 is gas at room temperature because of

1 strong hydrogen bond in boric acid
2 strong van der Waals' interaction in boric acid
3 strong ionic bond in boric acid.
4 strong covalent bond in BF3
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal Na2 B4O710H2O
2 Boric acid HBO2
3 Kernite B3 N3H6
4 Colemanite Ca2 B6O11
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
B(OH)3 + 2H2O[B(OH)4] -  + H3O + ; B(OH)3 functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
CHXI11:THE P-BLOCK ELEMENTS

316111 Assertion :
Boric acid acts as a strong acid in presence of catechol.
Reason :
Boric acid does not act as a proton donor but behaves as a Lewis acid.

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.
CHXI11:THE P-BLOCK ELEMENTS

316112 The incorrect statement from the following for borazine is

1 It has electronic delocalization.
2 It can react with water.
3 It is a cyclic compound.
4 It contains banana bonds.
CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas BF3 is gas at room temperature because of

1 strong hydrogen bond in boric acid
2 strong van der Waals' interaction in boric acid
3 strong ionic bond in boric acid.
4 strong covalent bond in BF3
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal Na2 B4O710H2O
2 Boric acid HBO2
3 Kernite B3 N3H6
4 Colemanite Ca2 B6O11
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
B(OH)3 + 2H2O[B(OH)4] -  + H3O + ; B(OH)3 functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
CHXI11:THE P-BLOCK ELEMENTS

316111 Assertion :
Boric acid acts as a strong acid in presence of catechol.
Reason :
Boric acid does not act as a proton donor but behaves as a Lewis acid.

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.
CHXI11:THE P-BLOCK ELEMENTS

316112 The incorrect statement from the following for borazine is

1 It has electronic delocalization.
2 It can react with water.
3 It is a cyclic compound.
4 It contains banana bonds.