QBManager

2 RBTS PAPER

160848 Both ${BF}_{3}$ and ${NF}_{3}$ are covalent compound. ${BF}_{3}$ is non polar compound but ${NF}_{3}$ is polar. The reason is :

1 Boron is a solid and nitrogen is a gas in free state

2 Boron is a metalloid while nitrogen is non metal

3

{BF}_{3}

is planar but

{NF}_{3}

is pyramidal in shape

4 Atomic size of boron is smaller than that of nitrogen

NCERT 116

2 RBTS PAPER

160849 Assertion:
$F_{2}$ and $O_{2}^{2 -}$ have bond order 1 while $N_{2}, CO$ and ${NO}^{+}$ have bond order 3 .
Reason:
Higher the bond order, higher is the stability of the molecule.

1 If both Assertion and reason are true and Reason is the correct explanation of Assertion.

2 If both Assertion and reason are true but Reason is not the correct explanation of Assertion.

3 If Assertion is true but Reason is false.

4 If both Assertion and Reason are false.

Explanation:

Isoelectronic molecules and ions have identical bond orders. $F_{2}$ and $O_{2}^{2 -}$ are isoelectronic with 18 electrons each and $N_{2}, CO$ and ${NO}^{+}$ are isoelectronic with 14 electrons each.

Mod. NEET

2 RBTS PAPER

160850 Assertion :
The dipole moment in case of ${BeCl}_{2}$ is zero.
Reason:
The two equal bond dipoles point in opposite directions and cancel the effect of each other.

1 If bothAssertion and reason are true and Reason is the correct explanation of Assertion.

2 If bothAssertion and reason are true but Reason is not the correct explanation of Assertion.

3 If Assertion is true but Reason is false.

4 If both Assertion and Reason are false.

Mod. NEET

2 RBTS PAPER

160851 Which among the following compound does not show hydrogen bonding :

1 Phenol

2 Ethyl alcohol

3 Acetic acid

4 Diethyl ether

NCERT 127

2 RBTS PAPER

160848 Both ${BF}_{3}$ and ${NF}_{3}$ are covalent compound. ${BF}_{3}$ is non polar compound but ${NF}_{3}$ is polar. The reason is :

1 Boron is a solid and nitrogen is a gas in free state

2 Boron is a metalloid while nitrogen is non metal

3

{BF}_{3}

is planar but

{NF}_{3}

is pyramidal in shape

4 Atomic size of boron is smaller than that of nitrogen

NCERT 116

2 RBTS PAPER

160849 Assertion:
$F_{2}$ and $O_{2}^{2 -}$ have bond order 1 while $N_{2}, CO$ and ${NO}^{+}$ have bond order 3 .
Reason:
Higher the bond order, higher is the stability of the molecule.

1 If both Assertion and reason are true and Reason is the correct explanation of Assertion.

2 If both Assertion and reason are true but Reason is not the correct explanation of Assertion.

3 If Assertion is true but Reason is false.

4 If both Assertion and Reason are false.

Explanation:

Isoelectronic molecules and ions have identical bond orders. $F_{2}$ and $O_{2}^{2 -}$ are isoelectronic with 18 electrons each and $N_{2}, CO$ and ${NO}^{+}$ are isoelectronic with 14 electrons each.

Mod. NEET

2 RBTS PAPER

160850 Assertion :
The dipole moment in case of ${BeCl}_{2}$ is zero.
Reason:
The two equal bond dipoles point in opposite directions and cancel the effect of each other.

1 If bothAssertion and reason are true and Reason is the correct explanation of Assertion.

2 If bothAssertion and reason are true but Reason is not the correct explanation of Assertion.

3 If Assertion is true but Reason is false.

4 If both Assertion and Reason are false.

Mod. NEET

2 RBTS PAPER

160851 Which among the following compound does not show hydrogen bonding :

1 Phenol

2 Ethyl alcohol

3 Acetic acid

4 Diethyl ether

NCERT 127

2 RBTS PAPER

160848 Both ${BF}_{3}$ and ${NF}_{3}$ are covalent compound. ${BF}_{3}$ is non polar compound but ${NF}_{3}$ is polar. The reason is :

1 Boron is a solid and nitrogen is a gas in free state

2 Boron is a metalloid while nitrogen is non metal

3

{BF}_{3}

is planar but

{NF}_{3}

is pyramidal in shape

4 Atomic size of boron is smaller than that of nitrogen

NCERT 116

2 RBTS PAPER

160849 Assertion:
$F_{2}$ and $O_{2}^{2 -}$ have bond order 1 while $N_{2}, CO$ and ${NO}^{+}$ have bond order 3 .
Reason:
Higher the bond order, higher is the stability of the molecule.

1 If both Assertion and reason are true and Reason is the correct explanation of Assertion.

2 If both Assertion and reason are true but Reason is not the correct explanation of Assertion.

3 If Assertion is true but Reason is false.

4 If both Assertion and Reason are false.

Explanation:

Isoelectronic molecules and ions have identical bond orders. $F_{2}$ and $O_{2}^{2 -}$ are isoelectronic with 18 electrons each and $N_{2}, CO$ and ${NO}^{+}$ are isoelectronic with 14 electrons each.

Mod. NEET

2 RBTS PAPER

160850 Assertion :
The dipole moment in case of ${BeCl}_{2}$ is zero.
Reason:
The two equal bond dipoles point in opposite directions and cancel the effect of each other.

1 If bothAssertion and reason are true and Reason is the correct explanation of Assertion.

2 If bothAssertion and reason are true but Reason is not the correct explanation of Assertion.

3 If Assertion is true but Reason is false.

4 If both Assertion and Reason are false.

Mod. NEET

2 RBTS PAPER

160851 Which among the following compound does not show hydrogen bonding :

1 Phenol

2 Ethyl alcohol

3 Acetic acid

4 Diethyl ether

NCERT 127

2 RBTS PAPER

160848 Both ${BF}_{3}$ and ${NF}_{3}$ are covalent compound. ${BF}_{3}$ is non polar compound but ${NF}_{3}$ is polar. The reason is :

1 Boron is a solid and nitrogen is a gas in free state

2 Boron is a metalloid while nitrogen is non metal

3

{BF}_{3}

is planar but

{NF}_{3}

is pyramidal in shape

4 Atomic size of boron is smaller than that of nitrogen

NCERT 116

2 RBTS PAPER

160849 Assertion:
$F_{2}$ and $O_{2}^{2 -}$ have bond order 1 while $N_{2}, CO$ and ${NO}^{+}$ have bond order 3 .
Reason:
Higher the bond order, higher is the stability of the molecule.

1 If both Assertion and reason are true and Reason is the correct explanation of Assertion.

2 If both Assertion and reason are true but Reason is not the correct explanation of Assertion.

3 If Assertion is true but Reason is false.

4 If both Assertion and Reason are false.

Explanation:

Isoelectronic molecules and ions have identical bond orders. $F_{2}$ and $O_{2}^{2 -}$ are isoelectronic with 18 electrons each and $N_{2}, CO$ and ${NO}^{+}$ are isoelectronic with 14 electrons each.

Mod. NEET

2 RBTS PAPER

160850 Assertion :
The dipole moment in case of ${BeCl}_{2}$ is zero.
Reason:
The two equal bond dipoles point in opposite directions and cancel the effect of each other.

1 If bothAssertion and reason are true and Reason is the correct explanation of Assertion.

2 If bothAssertion and reason are true but Reason is not the correct explanation of Assertion.

3 If Assertion is true but Reason is false.

4 If both Assertion and Reason are false.

Mod. NEET

2 RBTS PAPER

160851 Which among the following compound does not show hydrogen bonding :

1 Phenol

2 Ethyl alcohol

3 Acetic acid

4 Diethyl ether

NCERT 127