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CHXI11:THE P-BLOCK ELEMENTS

316811 Identify amphoteric oxide from the following

1

{SO}_{3}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${SO}_{3} -$ Acidic, ${Na}_{2} O -$ Basic
$N_{2} O$ - Neutral, ${Al}_{2} O_{3} -$ Amphoteric

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316812 Which of the following oxide is amphoteric in nature ?

1

{Cl}_{2} O_{7}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${Cl}_{2} O_{7}$ is an acidic oxide
${Na}_{2} O$ is a basic oxide
$N_{2} O$ is neutral oxide
${Al}_{2} O_{3}$ is amphoteric oxide

CHXI11:THE P-BLOCK ELEMENTS

316782 Which of the following is incorrect?

1

O_{2}

is weaker oxidant than

O_{3}

2

O_{2}

has small bond length

O_{3}

3 Both

O_{2}

and

O_{3}

are paramagnetic

4

O_{2}

is linear and

O_{3}

is angular in shape

Explanation:

$O_{2}$ is paramagnetic but not $O_{3}$

CHXI11:THE P-BLOCK ELEMENTS

316783 How is $O_{3}$ estimated quantitatively?

1 Iodometry using borate buffer

2 Permanganometry

3 Acid base titration

4 Precipitation

Explanation:

Ozone reacts with an excess of potassium iodide solution buffered with a borate buffer ( $pH 9.2)$ , iodine is liberated which can be titrated against a standard solution of sodium thiosulphate. This is a quantitative method for estimating $O_{3}$ gas.

CHXI11:THE P-BLOCK ELEMENTS

316784 Which among the following reactions exhibits the reducing property of ozone?

1

{PbS}_{(s)} + 4 O_{3 (g)} \to {PbSO}_{4 (s)} + 4 O_{2 (g)}

2

{BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}

3

{NO}_{(g)} + O_{3 (g)} \to {NO}_{2 (g)} + O_{2 (g)}

4

2 {KI}_{(aq)} + H_{2} O_{(l)} + O_{3 (g)} \to

2 KO H_{(aq)} + I_{2 (g)} + O_{2 (g)}

Explanation:

${BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}$
Ozone reduces peroxide to oxide.

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316811 Identify amphoteric oxide from the following

1

{SO}_{3}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${SO}_{3} -$ Acidic, ${Na}_{2} O -$ Basic
$N_{2} O$ - Neutral, ${Al}_{2} O_{3} -$ Amphoteric

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316812 Which of the following oxide is amphoteric in nature ?

1

{Cl}_{2} O_{7}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${Cl}_{2} O_{7}$ is an acidic oxide
${Na}_{2} O$ is a basic oxide
$N_{2} O$ is neutral oxide
${Al}_{2} O_{3}$ is amphoteric oxide

CHXI11:THE P-BLOCK ELEMENTS

316782 Which of the following is incorrect?

1

O_{2}

is weaker oxidant than

O_{3}

2

O_{2}

has small bond length

O_{3}

3 Both

O_{2}

and

O_{3}

are paramagnetic

4

O_{2}

is linear and

O_{3}

is angular in shape

Explanation:

$O_{2}$ is paramagnetic but not $O_{3}$

CHXI11:THE P-BLOCK ELEMENTS

316783 How is $O_{3}$ estimated quantitatively?

1 Iodometry using borate buffer

2 Permanganometry

3 Acid base titration

4 Precipitation

Explanation:

Ozone reacts with an excess of potassium iodide solution buffered with a borate buffer ( $pH 9.2)$ , iodine is liberated which can be titrated against a standard solution of sodium thiosulphate. This is a quantitative method for estimating $O_{3}$ gas.

CHXI11:THE P-BLOCK ELEMENTS

316784 Which among the following reactions exhibits the reducing property of ozone?

1

{PbS}_{(s)} + 4 O_{3 (g)} \to {PbSO}_{4 (s)} + 4 O_{2 (g)}

2

{BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}

3

{NO}_{(g)} + O_{3 (g)} \to {NO}_{2 (g)} + O_{2 (g)}

4

2 {KI}_{(aq)} + H_{2} O_{(l)} + O_{3 (g)} \to

2 KO H_{(aq)} + I_{2 (g)} + O_{2 (g)}

Explanation:

${BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}$
Ozone reduces peroxide to oxide.

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316811 Identify amphoteric oxide from the following

1

{SO}_{3}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${SO}_{3} -$ Acidic, ${Na}_{2} O -$ Basic
$N_{2} O$ - Neutral, ${Al}_{2} O_{3} -$ Amphoteric

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316812 Which of the following oxide is amphoteric in nature ?

1

{Cl}_{2} O_{7}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${Cl}_{2} O_{7}$ is an acidic oxide
${Na}_{2} O$ is a basic oxide
$N_{2} O$ is neutral oxide
${Al}_{2} O_{3}$ is amphoteric oxide

CHXI11:THE P-BLOCK ELEMENTS

316782 Which of the following is incorrect?

1

O_{2}

is weaker oxidant than

O_{3}

2

O_{2}

has small bond length

O_{3}

3 Both

O_{2}

and

O_{3}

are paramagnetic

4

O_{2}

is linear and

O_{3}

is angular in shape

Explanation:

$O_{2}$ is paramagnetic but not $O_{3}$

CHXI11:THE P-BLOCK ELEMENTS

316783 How is $O_{3}$ estimated quantitatively?

1 Iodometry using borate buffer

2 Permanganometry

3 Acid base titration

4 Precipitation

Explanation:

Ozone reacts with an excess of potassium iodide solution buffered with a borate buffer ( $pH 9.2)$ , iodine is liberated which can be titrated against a standard solution of sodium thiosulphate. This is a quantitative method for estimating $O_{3}$ gas.

CHXI11:THE P-BLOCK ELEMENTS

316784 Which among the following reactions exhibits the reducing property of ozone?

1

{PbS}_{(s)} + 4 O_{3 (g)} \to {PbSO}_{4 (s)} + 4 O_{2 (g)}

2

{BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}

3

{NO}_{(g)} + O_{3 (g)} \to {NO}_{2 (g)} + O_{2 (g)}

4

2 {KI}_{(aq)} + H_{2} O_{(l)} + O_{3 (g)} \to

2 KO H_{(aq)} + I_{2 (g)} + O_{2 (g)}

Explanation:

${BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}$
Ozone reduces peroxide to oxide.

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316811 Identify amphoteric oxide from the following

1

{SO}_{3}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${SO}_{3} -$ Acidic, ${Na}_{2} O -$ Basic
$N_{2} O$ - Neutral, ${Al}_{2} O_{3} -$ Amphoteric

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316812 Which of the following oxide is amphoteric in nature ?

1

{Cl}_{2} O_{7}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${Cl}_{2} O_{7}$ is an acidic oxide
${Na}_{2} O$ is a basic oxide
$N_{2} O$ is neutral oxide
${Al}_{2} O_{3}$ is amphoteric oxide

CHXI11:THE P-BLOCK ELEMENTS

316782 Which of the following is incorrect?

1

O_{2}

is weaker oxidant than

O_{3}

2

O_{2}

has small bond length

O_{3}

3 Both

O_{2}

and

O_{3}

are paramagnetic

4

O_{2}

is linear and

O_{3}

is angular in shape

Explanation:

$O_{2}$ is paramagnetic but not $O_{3}$

CHXI11:THE P-BLOCK ELEMENTS

316783 How is $O_{3}$ estimated quantitatively?

1 Iodometry using borate buffer

2 Permanganometry

3 Acid base titration

4 Precipitation

Explanation:

Ozone reacts with an excess of potassium iodide solution buffered with a borate buffer ( $pH 9.2)$ , iodine is liberated which can be titrated against a standard solution of sodium thiosulphate. This is a quantitative method for estimating $O_{3}$ gas.

CHXI11:THE P-BLOCK ELEMENTS

316784 Which among the following reactions exhibits the reducing property of ozone?

1

{PbS}_{(s)} + 4 O_{3 (g)} \to {PbSO}_{4 (s)} + 4 O_{2 (g)}

2

{BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}

3

{NO}_{(g)} + O_{3 (g)} \to {NO}_{2 (g)} + O_{2 (g)}

4

2 {KI}_{(aq)} + H_{2} O_{(l)} + O_{3 (g)} \to

2 KO H_{(aq)} + I_{2 (g)} + O_{2 (g)}

Explanation:

${BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}$
Ozone reduces peroxide to oxide.

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316811 Identify amphoteric oxide from the following

1

{SO}_{3}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${SO}_{3} -$ Acidic, ${Na}_{2} O -$ Basic
$N_{2} O$ - Neutral, ${Al}_{2} O_{3} -$ Amphoteric

MHTCET - 2021

CHXI11:THE P-BLOCK ELEMENTS

316812 Which of the following oxide is amphoteric in nature ?

1

{Cl}_{2} O_{7}

2

{Na}_{2} O

3

N_{2} O

4

{Al}_{2} O_{3}

Explanation:

${Cl}_{2} O_{7}$ is an acidic oxide
${Na}_{2} O$ is a basic oxide
$N_{2} O$ is neutral oxide
${Al}_{2} O_{3}$ is amphoteric oxide

CHXI11:THE P-BLOCK ELEMENTS

316782 Which of the following is incorrect?

1

O_{2}

is weaker oxidant than

O_{3}

2

O_{2}

has small bond length

O_{3}

3 Both

O_{2}

and

O_{3}

are paramagnetic

4

O_{2}

is linear and

O_{3}

is angular in shape

Explanation:

$O_{2}$ is paramagnetic but not $O_{3}$

CHXI11:THE P-BLOCK ELEMENTS

316783 How is $O_{3}$ estimated quantitatively?

1 Iodometry using borate buffer

2 Permanganometry

3 Acid base titration

4 Precipitation

Explanation:

Ozone reacts with an excess of potassium iodide solution buffered with a borate buffer ( $pH 9.2)$ , iodine is liberated which can be titrated against a standard solution of sodium thiosulphate. This is a quantitative method for estimating $O_{3}$ gas.

CHXI11:THE P-BLOCK ELEMENTS

316784 Which among the following reactions exhibits the reducing property of ozone?

1

{PbS}_{(s)} + 4 O_{3 (g)} \to {PbSO}_{4 (s)} + 4 O_{2 (g)}

2

{BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}

3

{NO}_{(g)} + O_{3 (g)} \to {NO}_{2 (g)} + O_{2 (g)}

4

2 {KI}_{(aq)} + H_{2} O_{(l)} + O_{3 (g)} \to

2 KO H_{(aq)} + I_{2 (g)} + O_{2 (g)}

Explanation:

${BaO}_{2 (g)} + O_{3 (g)} \to {BaO}_{(s)} + 2 O_{2 (g)}$
Ozone reduces peroxide to oxide.

MHTCET - 2021

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