316772
Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to
1 prevent reduction
2 prevent oxidation
3 prevent hydrolysis
4 prevent breaking.
Explanation:
Prolonged heating results in oxidation of \(\mathrm{Fe}^{+2}\) to \(\mathrm{Fe}^{+3}\).
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316773
Which of the following pairs of ions are isoelectronic and isostructural?
1 \(\mathrm{CO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
2 \(\mathrm{ClO}_{3}^{-}, \mathrm{CO}_{3}^{2-}\)
3 \(\mathrm{SO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
4 \(\mathrm{ClO}_{3}^{-}, \mathrm{SO}_{3}^{2-}\)
Explanation:
No. of electrons in \(\mathrm{CO}_{3}^{2-}=32=\) No. of electrons in \(\mathrm{NO}_{3}^{-}\) Both ions have \({\rm{s}}{{\rm{p}}^{\rm{2}}}\) hybridization and possess planar structure.
CHXI11:THE P-BLOCK ELEMENTS
316774
Match Column I with Column II.
Choose the correct answer from the options given below:
1 A - Q , B - S, C - R D - P
2 A - R, B - P, C - S, D - Q
3 A - Q , B - P, C - R, D - S
4 A - R, B - P, C - Q , D - S
Explanation:
(A - R)
It has one \(\mathrm{N}-\mathrm{N}\) bond \((\mathrm{B}-\mathrm{P})\)
It has one \(\mathrm{N}=\mathrm{O}\) bond \(({\rm{C}} - {\rm{Q}})\)
It has one \({\rm{N}} - {\rm{O}} - {\rm{N}}\) bond \(({\rm{D}} - {\rm{S}})\)
It has \(\mathrm{N}=\mathrm{N}\) or \(\mathrm{N} \equiv \mathrm{N}\) bond. Thus, the correct match is option 4.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316775
The oxidation state of N in peroxonitric acid is ____ .
1 \( + \,5\)
2 \({\rm{ + }}\,{\rm{3}}\)
3 \( + \,\,1\)
4 \( + \,2\)
Explanation:
The structure of peroxonitric acid \({\mathrm{\left(\mathrm{HNO}_{4}\right)}}\) is The structure shows that peroxonitric acid contains one peroxide linkage ( \({\mathrm{\mathrm{O}-\mathrm{O}}}\) bond). 0 atoms linked by peroxide bond have oxidation state of \( - 1\) . Hence, \({\mathrm{+1+x+(-2 \times 2)+(-1 \times 2)=0}}\) \({\mathrm{\therefore x+1-6=0}}\) \({\mathrm{x=+5}}\)
CHXI11:THE P-BLOCK ELEMENTS
316776
Assertion : \(\mathrm{NO}_{3}^{-}\)is planar while \(\mathrm{NH}_{3}\) is pyramidal. Reason : \(\mathrm{N}\) in \(\mathrm{NO}_{3}^{-}\)is \(\mathrm{sp}^{2}\) hybridized but in \(\mathrm{NH}_{3}\) it \(\mathrm{sp}^{3}\) hybridized.
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.
Explanation:
\(\mathrm{NO}_{3}{ }^{-}\)is planar as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{2}\) hybridisation. \(\mathrm{NH}_{3}\) is pyramidal as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{3}\) hybridisation (with a lone pair). Therefore, option (1) is correct.
316772
Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to
1 prevent reduction
2 prevent oxidation
3 prevent hydrolysis
4 prevent breaking.
Explanation:
Prolonged heating results in oxidation of \(\mathrm{Fe}^{+2}\) to \(\mathrm{Fe}^{+3}\).
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316773
Which of the following pairs of ions are isoelectronic and isostructural?
1 \(\mathrm{CO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
2 \(\mathrm{ClO}_{3}^{-}, \mathrm{CO}_{3}^{2-}\)
3 \(\mathrm{SO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
4 \(\mathrm{ClO}_{3}^{-}, \mathrm{SO}_{3}^{2-}\)
Explanation:
No. of electrons in \(\mathrm{CO}_{3}^{2-}=32=\) No. of electrons in \(\mathrm{NO}_{3}^{-}\) Both ions have \({\rm{s}}{{\rm{p}}^{\rm{2}}}\) hybridization and possess planar structure.
CHXI11:THE P-BLOCK ELEMENTS
316774
Match Column I with Column II.
Choose the correct answer from the options given below:
1 A - Q , B - S, C - R D - P
2 A - R, B - P, C - S, D - Q
3 A - Q , B - P, C - R, D - S
4 A - R, B - P, C - Q , D - S
Explanation:
(A - R)
It has one \(\mathrm{N}-\mathrm{N}\) bond \((\mathrm{B}-\mathrm{P})\)
It has one \(\mathrm{N}=\mathrm{O}\) bond \(({\rm{C}} - {\rm{Q}})\)
It has one \({\rm{N}} - {\rm{O}} - {\rm{N}}\) bond \(({\rm{D}} - {\rm{S}})\)
It has \(\mathrm{N}=\mathrm{N}\) or \(\mathrm{N} \equiv \mathrm{N}\) bond. Thus, the correct match is option 4.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316775
The oxidation state of N in peroxonitric acid is ____ .
1 \( + \,5\)
2 \({\rm{ + }}\,{\rm{3}}\)
3 \( + \,\,1\)
4 \( + \,2\)
Explanation:
The structure of peroxonitric acid \({\mathrm{\left(\mathrm{HNO}_{4}\right)}}\) is The structure shows that peroxonitric acid contains one peroxide linkage ( \({\mathrm{\mathrm{O}-\mathrm{O}}}\) bond). 0 atoms linked by peroxide bond have oxidation state of \( - 1\) . Hence, \({\mathrm{+1+x+(-2 \times 2)+(-1 \times 2)=0}}\) \({\mathrm{\therefore x+1-6=0}}\) \({\mathrm{x=+5}}\)
CHXI11:THE P-BLOCK ELEMENTS
316776
Assertion : \(\mathrm{NO}_{3}^{-}\)is planar while \(\mathrm{NH}_{3}\) is pyramidal. Reason : \(\mathrm{N}\) in \(\mathrm{NO}_{3}^{-}\)is \(\mathrm{sp}^{2}\) hybridized but in \(\mathrm{NH}_{3}\) it \(\mathrm{sp}^{3}\) hybridized.
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.
Explanation:
\(\mathrm{NO}_{3}{ }^{-}\)is planar as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{2}\) hybridisation. \(\mathrm{NH}_{3}\) is pyramidal as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{3}\) hybridisation (with a lone pair). Therefore, option (1) is correct.
316772
Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to
1 prevent reduction
2 prevent oxidation
3 prevent hydrolysis
4 prevent breaking.
Explanation:
Prolonged heating results in oxidation of \(\mathrm{Fe}^{+2}\) to \(\mathrm{Fe}^{+3}\).
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316773
Which of the following pairs of ions are isoelectronic and isostructural?
1 \(\mathrm{CO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
2 \(\mathrm{ClO}_{3}^{-}, \mathrm{CO}_{3}^{2-}\)
3 \(\mathrm{SO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
4 \(\mathrm{ClO}_{3}^{-}, \mathrm{SO}_{3}^{2-}\)
Explanation:
No. of electrons in \(\mathrm{CO}_{3}^{2-}=32=\) No. of electrons in \(\mathrm{NO}_{3}^{-}\) Both ions have \({\rm{s}}{{\rm{p}}^{\rm{2}}}\) hybridization and possess planar structure.
CHXI11:THE P-BLOCK ELEMENTS
316774
Match Column I with Column II.
Choose the correct answer from the options given below:
1 A - Q , B - S, C - R D - P
2 A - R, B - P, C - S, D - Q
3 A - Q , B - P, C - R, D - S
4 A - R, B - P, C - Q , D - S
Explanation:
(A - R)
It has one \(\mathrm{N}-\mathrm{N}\) bond \((\mathrm{B}-\mathrm{P})\)
It has one \(\mathrm{N}=\mathrm{O}\) bond \(({\rm{C}} - {\rm{Q}})\)
It has one \({\rm{N}} - {\rm{O}} - {\rm{N}}\) bond \(({\rm{D}} - {\rm{S}})\)
It has \(\mathrm{N}=\mathrm{N}\) or \(\mathrm{N} \equiv \mathrm{N}\) bond. Thus, the correct match is option 4.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316775
The oxidation state of N in peroxonitric acid is ____ .
1 \( + \,5\)
2 \({\rm{ + }}\,{\rm{3}}\)
3 \( + \,\,1\)
4 \( + \,2\)
Explanation:
The structure of peroxonitric acid \({\mathrm{\left(\mathrm{HNO}_{4}\right)}}\) is The structure shows that peroxonitric acid contains one peroxide linkage ( \({\mathrm{\mathrm{O}-\mathrm{O}}}\) bond). 0 atoms linked by peroxide bond have oxidation state of \( - 1\) . Hence, \({\mathrm{+1+x+(-2 \times 2)+(-1 \times 2)=0}}\) \({\mathrm{\therefore x+1-6=0}}\) \({\mathrm{x=+5}}\)
CHXI11:THE P-BLOCK ELEMENTS
316776
Assertion : \(\mathrm{NO}_{3}^{-}\)is planar while \(\mathrm{NH}_{3}\) is pyramidal. Reason : \(\mathrm{N}\) in \(\mathrm{NO}_{3}^{-}\)is \(\mathrm{sp}^{2}\) hybridized but in \(\mathrm{NH}_{3}\) it \(\mathrm{sp}^{3}\) hybridized.
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.
Explanation:
\(\mathrm{NO}_{3}{ }^{-}\)is planar as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{2}\) hybridisation. \(\mathrm{NH}_{3}\) is pyramidal as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{3}\) hybridisation (with a lone pair). Therefore, option (1) is correct.
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI11:THE P-BLOCK ELEMENTS
316772
Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to
1 prevent reduction
2 prevent oxidation
3 prevent hydrolysis
4 prevent breaking.
Explanation:
Prolonged heating results in oxidation of \(\mathrm{Fe}^{+2}\) to \(\mathrm{Fe}^{+3}\).
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316773
Which of the following pairs of ions are isoelectronic and isostructural?
1 \(\mathrm{CO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
2 \(\mathrm{ClO}_{3}^{-}, \mathrm{CO}_{3}^{2-}\)
3 \(\mathrm{SO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
4 \(\mathrm{ClO}_{3}^{-}, \mathrm{SO}_{3}^{2-}\)
Explanation:
No. of electrons in \(\mathrm{CO}_{3}^{2-}=32=\) No. of electrons in \(\mathrm{NO}_{3}^{-}\) Both ions have \({\rm{s}}{{\rm{p}}^{\rm{2}}}\) hybridization and possess planar structure.
CHXI11:THE P-BLOCK ELEMENTS
316774
Match Column I with Column II.
Choose the correct answer from the options given below:
1 A - Q , B - S, C - R D - P
2 A - R, B - P, C - S, D - Q
3 A - Q , B - P, C - R, D - S
4 A - R, B - P, C - Q , D - S
Explanation:
(A - R)
It has one \(\mathrm{N}-\mathrm{N}\) bond \((\mathrm{B}-\mathrm{P})\)
It has one \(\mathrm{N}=\mathrm{O}\) bond \(({\rm{C}} - {\rm{Q}})\)
It has one \({\rm{N}} - {\rm{O}} - {\rm{N}}\) bond \(({\rm{D}} - {\rm{S}})\)
It has \(\mathrm{N}=\mathrm{N}\) or \(\mathrm{N} \equiv \mathrm{N}\) bond. Thus, the correct match is option 4.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316775
The oxidation state of N in peroxonitric acid is ____ .
1 \( + \,5\)
2 \({\rm{ + }}\,{\rm{3}}\)
3 \( + \,\,1\)
4 \( + \,2\)
Explanation:
The structure of peroxonitric acid \({\mathrm{\left(\mathrm{HNO}_{4}\right)}}\) is The structure shows that peroxonitric acid contains one peroxide linkage ( \({\mathrm{\mathrm{O}-\mathrm{O}}}\) bond). 0 atoms linked by peroxide bond have oxidation state of \( - 1\) . Hence, \({\mathrm{+1+x+(-2 \times 2)+(-1 \times 2)=0}}\) \({\mathrm{\therefore x+1-6=0}}\) \({\mathrm{x=+5}}\)
CHXI11:THE P-BLOCK ELEMENTS
316776
Assertion : \(\mathrm{NO}_{3}^{-}\)is planar while \(\mathrm{NH}_{3}\) is pyramidal. Reason : \(\mathrm{N}\) in \(\mathrm{NO}_{3}^{-}\)is \(\mathrm{sp}^{2}\) hybridized but in \(\mathrm{NH}_{3}\) it \(\mathrm{sp}^{3}\) hybridized.
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.
Explanation:
\(\mathrm{NO}_{3}{ }^{-}\)is planar as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{2}\) hybridisation. \(\mathrm{NH}_{3}\) is pyramidal as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{3}\) hybridisation (with a lone pair). Therefore, option (1) is correct.
316772
Prolonged heating is avoided during the preparation of ferrous ammonium sulphate to
1 prevent reduction
2 prevent oxidation
3 prevent hydrolysis
4 prevent breaking.
Explanation:
Prolonged heating results in oxidation of \(\mathrm{Fe}^{+2}\) to \(\mathrm{Fe}^{+3}\).
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316773
Which of the following pairs of ions are isoelectronic and isostructural?
1 \(\mathrm{CO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
2 \(\mathrm{ClO}_{3}^{-}, \mathrm{CO}_{3}^{2-}\)
3 \(\mathrm{SO}_{3}^{2-}, \mathrm{NO}_{3}^{-}\)
4 \(\mathrm{ClO}_{3}^{-}, \mathrm{SO}_{3}^{2-}\)
Explanation:
No. of electrons in \(\mathrm{CO}_{3}^{2-}=32=\) No. of electrons in \(\mathrm{NO}_{3}^{-}\) Both ions have \({\rm{s}}{{\rm{p}}^{\rm{2}}}\) hybridization and possess planar structure.
CHXI11:THE P-BLOCK ELEMENTS
316774
Match Column I with Column II.
Choose the correct answer from the options given below:
1 A - Q , B - S, C - R D - P
2 A - R, B - P, C - S, D - Q
3 A - Q , B - P, C - R, D - S
4 A - R, B - P, C - Q , D - S
Explanation:
(A - R)
It has one \(\mathrm{N}-\mathrm{N}\) bond \((\mathrm{B}-\mathrm{P})\)
It has one \(\mathrm{N}=\mathrm{O}\) bond \(({\rm{C}} - {\rm{Q}})\)
It has one \({\rm{N}} - {\rm{O}} - {\rm{N}}\) bond \(({\rm{D}} - {\rm{S}})\)
It has \(\mathrm{N}=\mathrm{N}\) or \(\mathrm{N} \equiv \mathrm{N}\) bond. Thus, the correct match is option 4.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316775
The oxidation state of N in peroxonitric acid is ____ .
1 \( + \,5\)
2 \({\rm{ + }}\,{\rm{3}}\)
3 \( + \,\,1\)
4 \( + \,2\)
Explanation:
The structure of peroxonitric acid \({\mathrm{\left(\mathrm{HNO}_{4}\right)}}\) is The structure shows that peroxonitric acid contains one peroxide linkage ( \({\mathrm{\mathrm{O}-\mathrm{O}}}\) bond). 0 atoms linked by peroxide bond have oxidation state of \( - 1\) . Hence, \({\mathrm{+1+x+(-2 \times 2)+(-1 \times 2)=0}}\) \({\mathrm{\therefore x+1-6=0}}\) \({\mathrm{x=+5}}\)
CHXI11:THE P-BLOCK ELEMENTS
316776
Assertion : \(\mathrm{NO}_{3}^{-}\)is planar while \(\mathrm{NH}_{3}\) is pyramidal. Reason : \(\mathrm{N}\) in \(\mathrm{NO}_{3}^{-}\)is \(\mathrm{sp}^{2}\) hybridized but in \(\mathrm{NH}_{3}\) it \(\mathrm{sp}^{3}\) hybridized.
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.
Explanation:
\(\mathrm{NO}_{3}{ }^{-}\)is planar as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{2}\) hybridisation. \(\mathrm{NH}_{3}\) is pyramidal as ' \(\mathrm{N}\) ' undergoes \(\mathrm{sp}^{3}\) hybridisation (with a lone pair). Therefore, option (1) is correct.
