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CHXI11:THE P-BLOCK ELEMENTS

316726 How many of the following species on thermal decomposition give dinitrogen?
${({NH}_{4})}_{2} {Cr}_{2} O_{7}, Ba {(N_{3})}_{2}, {NH}_{4} Cl, {NaN}_{3}, {NH}_{4} {NO}_{2}$ , ${({NH}_{4})}_{2} {SO}_{4}$

1 5

2 1

3 2

4 4

Explanation:

${({NH}_{4})}_{2} {Cr}_{2} O_{7}, Ba {(N_{3})}_{2}, {NaN}_{3}$ and ${NH}_{4} {NO}_{2}$ on thermal decomposition give dinitrogen. ${NH}_{4} Cl$ on heating gives ammonia $({NH}_{3})$ and hydrogen chloride gas $(H C l) . {(N H_{4})}_{2} S O_{4}$ does not decompose on heating.

CHXI11:THE P-BLOCK ELEMENTS

316727 Statement A :
Dinitrogen is inert at room temperature.
Statement B :
Dinitrogen directly combines with lithium to form ionic nitrides, at high temperature.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

CHXI11:THE P-BLOCK ELEMENTS

316728 The product obtained as a result of a reaction of nitrogen with ${CaC}_{2}$ is:

1

CaCN

2

{CaCN}_{3}

3

{Ca}_{2} CN

4

{CaCN}_{2}

Explanation:

Reaction of ${CaC}_{2}$ and nitrogen at $1100 K$
${CaC}_{2} + N_{2} \to {CaCN}_{2} + C$

NEET - 2016

CHXI11:THE P-BLOCK ELEMENTS

316729 Assertion :
${BaCO}_{3}$ is more soluble in ${HNO}_{3}$ than in plain water.
Reason :
Carbonate is a weak base and reacts with the $H^{+}$ from the strong acid, causing the barium salt to dissociate.

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:

${BaCO}_{3} + 2 {HNO}_{3} \to Ba {({NO}_{3})}_{2} + H_{2} O + {CO}_{2}$
So option (1) is correct

CHXI11:THE P-BLOCK ELEMENTS

316726 How many of the following species on thermal decomposition give dinitrogen?
${({NH}_{4})}_{2} {Cr}_{2} O_{7}, Ba {(N_{3})}_{2}, {NH}_{4} Cl, {NaN}_{3}, {NH}_{4} {NO}_{2}$ , ${({NH}_{4})}_{2} {SO}_{4}$

1 5

2 1

3 2

4 4

Explanation:

${({NH}_{4})}_{2} {Cr}_{2} O_{7}, Ba {(N_{3})}_{2}, {NaN}_{3}$ and ${NH}_{4} {NO}_{2}$ on thermal decomposition give dinitrogen. ${NH}_{4} Cl$ on heating gives ammonia $({NH}_{3})$ and hydrogen chloride gas $(H C l) . {(N H_{4})}_{2} S O_{4}$ does not decompose on heating.

CHXI11:THE P-BLOCK ELEMENTS

316727 Statement A :
Dinitrogen is inert at room temperature.
Statement B :
Dinitrogen directly combines with lithium to form ionic nitrides, at high temperature.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

CHXI11:THE P-BLOCK ELEMENTS

316728 The product obtained as a result of a reaction of nitrogen with ${CaC}_{2}$ is:

1

CaCN

2

{CaCN}_{3}

3

{Ca}_{2} CN

4

{CaCN}_{2}

Explanation:

Reaction of ${CaC}_{2}$ and nitrogen at $1100 K$
${CaC}_{2} + N_{2} \to {CaCN}_{2} + C$

NEET - 2016

CHXI11:THE P-BLOCK ELEMENTS

316729 Assertion :
${BaCO}_{3}$ is more soluble in ${HNO}_{3}$ than in plain water.
Reason :
Carbonate is a weak base and reacts with the $H^{+}$ from the strong acid, causing the barium salt to dissociate.

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:

${BaCO}_{3} + 2 {HNO}_{3} \to Ba {({NO}_{3})}_{2} + H_{2} O + {CO}_{2}$
So option (1) is correct

CHXI11:THE P-BLOCK ELEMENTS

316726 How many of the following species on thermal decomposition give dinitrogen?
${({NH}_{4})}_{2} {Cr}_{2} O_{7}, Ba {(N_{3})}_{2}, {NH}_{4} Cl, {NaN}_{3}, {NH}_{4} {NO}_{2}$ , ${({NH}_{4})}_{2} {SO}_{4}$

1 5

2 1

3 2

4 4

Explanation:

${({NH}_{4})}_{2} {Cr}_{2} O_{7}, Ba {(N_{3})}_{2}, {NaN}_{3}$ and ${NH}_{4} {NO}_{2}$ on thermal decomposition give dinitrogen. ${NH}_{4} Cl$ on heating gives ammonia $({NH}_{3})$ and hydrogen chloride gas $(H C l) . {(N H_{4})}_{2} S O_{4}$ does not decompose on heating.

CHXI11:THE P-BLOCK ELEMENTS

316727 Statement A :
Dinitrogen is inert at room temperature.
Statement B :
Dinitrogen directly combines with lithium to form ionic nitrides, at high temperature.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

CHXI11:THE P-BLOCK ELEMENTS

316728 The product obtained as a result of a reaction of nitrogen with ${CaC}_{2}$ is:

1

CaCN

2

{CaCN}_{3}

3

{Ca}_{2} CN

4

{CaCN}_{2}

Explanation:

Reaction of ${CaC}_{2}$ and nitrogen at $1100 K$
${CaC}_{2} + N_{2} \to {CaCN}_{2} + C$

NEET - 2016

CHXI11:THE P-BLOCK ELEMENTS

316729 Assertion :
${BaCO}_{3}$ is more soluble in ${HNO}_{3}$ than in plain water.
Reason :
Carbonate is a weak base and reacts with the $H^{+}$ from the strong acid, causing the barium salt to dissociate.

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:

${BaCO}_{3} + 2 {HNO}_{3} \to Ba {({NO}_{3})}_{2} + H_{2} O + {CO}_{2}$
So option (1) is correct

CHXI11:THE P-BLOCK ELEMENTS

316726 How many of the following species on thermal decomposition give dinitrogen?
${({NH}_{4})}_{2} {Cr}_{2} O_{7}, Ba {(N_{3})}_{2}, {NH}_{4} Cl, {NaN}_{3}, {NH}_{4} {NO}_{2}$ , ${({NH}_{4})}_{2} {SO}_{4}$

1 5

2 1

3 2

4 4

Explanation:

${({NH}_{4})}_{2} {Cr}_{2} O_{7}, Ba {(N_{3})}_{2}, {NaN}_{3}$ and ${NH}_{4} {NO}_{2}$ on thermal decomposition give dinitrogen. ${NH}_{4} Cl$ on heating gives ammonia $({NH}_{3})$ and hydrogen chloride gas $(H C l) . {(N H_{4})}_{2} S O_{4}$ does not decompose on heating.

CHXI11:THE P-BLOCK ELEMENTS

316727 Statement A :
Dinitrogen is inert at room temperature.
Statement B :
Dinitrogen directly combines with lithium to form ionic nitrides, at high temperature.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

CHXI11:THE P-BLOCK ELEMENTS

316728 The product obtained as a result of a reaction of nitrogen with ${CaC}_{2}$ is:

1

CaCN

2

{CaCN}_{3}

3

{Ca}_{2} CN

4

{CaCN}_{2}

Explanation:

Reaction of ${CaC}_{2}$ and nitrogen at $1100 K$
${CaC}_{2} + N_{2} \to {CaCN}_{2} + C$

NEET - 2016

CHXI11:THE P-BLOCK ELEMENTS

316729 Assertion :
${BaCO}_{3}$ is more soluble in ${HNO}_{3}$ than in plain water.
Reason :
Carbonate is a weak base and reacts with the $H^{+}$ from the strong acid, causing the barium salt to dissociate.

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:

${BaCO}_{3} + 2 {HNO}_{3} \to Ba {({NO}_{3})}_{2} + H_{2} O + {CO}_{2}$
So option (1) is correct

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