Boron and its Compounds
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CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas \(\mathrm{BF}_{3}\) 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 \(\mathrm{BF}_{3}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal \(-\mathrm{Na}_{2} \mathrm{~B}_{4} \mathrm{O}_{7} \cdot 10 \mathrm{H}_{2} \mathrm{O}\)
2 Boric acid \(-\mathrm{HBO}_{2}\)
3 Kernite \(-\mathrm{B}_{3} \mathrm{~N}_{3} \mathrm{H}_{6}\)
4 Colemanite \(-\mathrm{Ca}_{2} \mathrm{~B}_{6} \mathrm{O}_{11}\)
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
\({\text{B(OH}}{{\text{)}}_{\text{3}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}} \to {\left[ {{\text{B(OH}}{{\text{)}}_{\text{4}}}} \right]^{\text{ - }}}{\text{ + }}{{\text{H}}_{\text{3}}}{{\text{O}}^{\text{ + }}}{\text{; B(OH}}{{\text{)}}_{\text{3}}}\) functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
KCET - 2019
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.
JEE - 2023
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CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas \(\mathrm{BF}_{3}\) 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 \(\mathrm{BF}_{3}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal \(-\mathrm{Na}_{2} \mathrm{~B}_{4} \mathrm{O}_{7} \cdot 10 \mathrm{H}_{2} \mathrm{O}\)
2 Boric acid \(-\mathrm{HBO}_{2}\)
3 Kernite \(-\mathrm{B}_{3} \mathrm{~N}_{3} \mathrm{H}_{6}\)
4 Colemanite \(-\mathrm{Ca}_{2} \mathrm{~B}_{6} \mathrm{O}_{11}\)
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
\({\text{B(OH}}{{\text{)}}_{\text{3}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}} \to {\left[ {{\text{B(OH}}{{\text{)}}_{\text{4}}}} \right]^{\text{ - }}}{\text{ + }}{{\text{H}}_{\text{3}}}{{\text{O}}^{\text{ + }}}{\text{; B(OH}}{{\text{)}}_{\text{3}}}\) functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
KCET - 2019
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.
JEE - 2023
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CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas \(\mathrm{BF}_{3}\) 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 \(\mathrm{BF}_{3}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal \(-\mathrm{Na}_{2} \mathrm{~B}_{4} \mathrm{O}_{7} \cdot 10 \mathrm{H}_{2} \mathrm{O}\)
2 Boric acid \(-\mathrm{HBO}_{2}\)
3 Kernite \(-\mathrm{B}_{3} \mathrm{~N}_{3} \mathrm{H}_{6}\)
4 Colemanite \(-\mathrm{Ca}_{2} \mathrm{~B}_{6} \mathrm{O}_{11}\)
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
\({\text{B(OH}}{{\text{)}}_{\text{3}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}} \to {\left[ {{\text{B(OH}}{{\text{)}}_{\text{4}}}} \right]^{\text{ - }}}{\text{ + }}{{\text{H}}_{\text{3}}}{{\text{O}}^{\text{ + }}}{\text{; B(OH}}{{\text{)}}_{\text{3}}}\) functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
KCET - 2019
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.
JEE - 2023
NEET DIGITAL LIBRARY
CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas \(\mathrm{BF}_{3}\) 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 \(\mathrm{BF}_{3}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal \(-\mathrm{Na}_{2} \mathrm{~B}_{4} \mathrm{O}_{7} \cdot 10 \mathrm{H}_{2} \mathrm{O}\)
2 Boric acid \(-\mathrm{HBO}_{2}\)
3 Kernite \(-\mathrm{B}_{3} \mathrm{~N}_{3} \mathrm{H}_{6}\)
4 Colemanite \(-\mathrm{Ca}_{2} \mathrm{~B}_{6} \mathrm{O}_{11}\)
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
\({\text{B(OH}}{{\text{)}}_{\text{3}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}} \to {\left[ {{\text{B(OH}}{{\text{)}}_{\text{4}}}} \right]^{\text{ - }}}{\text{ + }}{{\text{H}}_{\text{3}}}{{\text{O}}^{\text{ + }}}{\text{; B(OH}}{{\text{)}}_{\text{3}}}\) functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
KCET - 2019
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.
JEE - 2023
Join With Us for More Updates
CHXI11:THE P-BLOCK ELEMENTS

316108 Boric acid is solid, whereas \(\mathrm{BF}_{3}\) 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 \(\mathrm{BF}_{3}\)
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS

316109 Which is correctly matched?

1 Tincal \(-\mathrm{Na}_{2} \mathrm{~B}_{4} \mathrm{O}_{7} \cdot 10 \mathrm{H}_{2} \mathrm{O}\)
2 Boric acid \(-\mathrm{HBO}_{2}\)
3 Kernite \(-\mathrm{B}_{3} \mathrm{~N}_{3} \mathrm{H}_{6}\)
4 Colemanite \(-\mathrm{Ca}_{2} \mathrm{~B}_{6} \mathrm{O}_{11}\)
CHXI11:THE P-BLOCK ELEMENTS

316110 In the reaction,
\({\text{B(OH}}{{\text{)}}_{\text{3}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}} \to {\left[ {{\text{B(OH}}{{\text{)}}_{\text{4}}}} \right]^{\text{ - }}}{\text{ + }}{{\text{H}}_{\text{3}}}{{\text{O}}^{\text{ + }}}{\text{; B(OH}}{{\text{)}}_{\text{3}}}\) functions as

1 Protonic acid
2 Lewis base
3 Bronsted acid
4 Lewis acid.
KCET - 2019
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.
JEE - 2023