QBManager

2 RBTS PAPER

160842 Assertion:
In the formation of water molecule, both hydrogen and oxygen atoms attain octet of electrons.
Reason :
Oxygen atom forms two ionic or electrovalent bonds with two hydrogen atoms.

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.

Mod. NEET

2 RBTS PAPER

160863 Which of the following statements is true about hybridisation?

1 The hybridised orbitals have different energies for each orbital.

2 The number of hybrid orbitals is equal to the number of atomic orbitals that are hybridised.

3 Hybrid orbitals form multiple bonds.

4 The orbitals with different energies undergo hybridisation.

Mod. NEET

2 RBTS PAPER

160864 Which of the following statements is not true?

1 Ionic bonds are non-directional while covalent bonds are directional.

2 Formation of

π

-bond shortens the distance between the two concerned atoms.

3 Ionic bond is possible between similar and dissimjlar atoms.

4 Linear overlapping of atomic p-orbitals leads to a sigma bond.

Mod. NEET

2 RBTS PAPER

160815 Among the given species identify the isostructural pairs.

1

[{NF}_{3}

and

{BF}_{3}]

2

[{BF}_{4}^{-}

and

{NH}_{4}^{+}]

3

[{BCl}_{3}

and

{BrCl}_{3}]

4

[{NH}_{3}

and

{NO}_{3}^{-}]

Explanation:

${NF}_{3}$ (pyramidal) and ${BF}_{3}$ (trigonal planar)
${BF}_{4}^{-}$ (tetrahedral) and ${NH}_{4}^{+}$ (tetrahedral)
${BCl}_{3}$ (trigonal planar) and ${BrCl}_{3}$ (trigonal bipyramidal)
${NH}_{3}$ (pyramidal) and ${NO}_{3}^{-}$ (trigonal planar)
Thus, ${BF}_{4}^{-}$ and ${NH}_{4}^{+}$ are isostructural species.

Mod. NEET

2 RBTS PAPER

160816 Hybridization of carbon in $C_{3} O_{2}$ is :

1

s p

2

s p^{2}

3

s p^{3}

4

s p^{3} d

Explanation:

$O = C = C = C = O$ each ' $C$ ' is surrounded by 2 sigma electron pair hence each ' $C$ ' is $s p$ hybridised.

NCERT 119

2 RBTS PAPER

160842 Assertion:
In the formation of water molecule, both hydrogen and oxygen atoms attain octet of electrons.
Reason :
Oxygen atom forms two ionic or electrovalent bonds with two hydrogen atoms.

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.

Mod. NEET

2 RBTS PAPER

160863 Which of the following statements is true about hybridisation?

1 The hybridised orbitals have different energies for each orbital.

2 The number of hybrid orbitals is equal to the number of atomic orbitals that are hybridised.

3 Hybrid orbitals form multiple bonds.

4 The orbitals with different energies undergo hybridisation.

Mod. NEET

2 RBTS PAPER

160864 Which of the following statements is not true?

1 Ionic bonds are non-directional while covalent bonds are directional.

2 Formation of

π

-bond shortens the distance between the two concerned atoms.

3 Ionic bond is possible between similar and dissimjlar atoms.

4 Linear overlapping of atomic p-orbitals leads to a sigma bond.

Mod. NEET

2 RBTS PAPER

160815 Among the given species identify the isostructural pairs.

1

[{NF}_{3}

and

{BF}_{3}]

2

[{BF}_{4}^{-}

and

{NH}_{4}^{+}]

3

[{BCl}_{3}

and

{BrCl}_{3}]

4

[{NH}_{3}

and

{NO}_{3}^{-}]

Explanation:

${NF}_{3}$ (pyramidal) and ${BF}_{3}$ (trigonal planar)
${BF}_{4}^{-}$ (tetrahedral) and ${NH}_{4}^{+}$ (tetrahedral)
${BCl}_{3}$ (trigonal planar) and ${BrCl}_{3}$ (trigonal bipyramidal)
${NH}_{3}$ (pyramidal) and ${NO}_{3}^{-}$ (trigonal planar)
Thus, ${BF}_{4}^{-}$ and ${NH}_{4}^{+}$ are isostructural species.

Mod. NEET

2 RBTS PAPER

160816 Hybridization of carbon in $C_{3} O_{2}$ is :

1

s p

2

s p^{2}

3

s p^{3}

4

s p^{3} d

Explanation:

$O = C = C = C = O$ each ' $C$ ' is surrounded by 2 sigma electron pair hence each ' $C$ ' is $s p$ hybridised.

NCERT 119

2 RBTS PAPER

160842 Assertion:
In the formation of water molecule, both hydrogen and oxygen atoms attain octet of electrons.
Reason :
Oxygen atom forms two ionic or electrovalent bonds with two hydrogen atoms.

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.

Mod. NEET

2 RBTS PAPER

160863 Which of the following statements is true about hybridisation?

1 The hybridised orbitals have different energies for each orbital.

2 The number of hybrid orbitals is equal to the number of atomic orbitals that are hybridised.

3 Hybrid orbitals form multiple bonds.

4 The orbitals with different energies undergo hybridisation.

Mod. NEET

2 RBTS PAPER

160864 Which of the following statements is not true?

1 Ionic bonds are non-directional while covalent bonds are directional.

2 Formation of

π

-bond shortens the distance between the two concerned atoms.

3 Ionic bond is possible between similar and dissimjlar atoms.

4 Linear overlapping of atomic p-orbitals leads to a sigma bond.

Mod. NEET

2 RBTS PAPER

160815 Among the given species identify the isostructural pairs.

1

[{NF}_{3}

and

{BF}_{3}]

2

[{BF}_{4}^{-}

and

{NH}_{4}^{+}]

3

[{BCl}_{3}

and

{BrCl}_{3}]

4

[{NH}_{3}

and

{NO}_{3}^{-}]

Explanation:

${NF}_{3}$ (pyramidal) and ${BF}_{3}$ (trigonal planar)
${BF}_{4}^{-}$ (tetrahedral) and ${NH}_{4}^{+}$ (tetrahedral)
${BCl}_{3}$ (trigonal planar) and ${BrCl}_{3}$ (trigonal bipyramidal)
${NH}_{3}$ (pyramidal) and ${NO}_{3}^{-}$ (trigonal planar)
Thus, ${BF}_{4}^{-}$ and ${NH}_{4}^{+}$ are isostructural species.

Mod. NEET

2 RBTS PAPER

160816 Hybridization of carbon in $C_{3} O_{2}$ is :

1

s p

2

s p^{2}

3

s p^{3}

4

s p^{3} d

Explanation:

$O = C = C = C = O$ each ' $C$ ' is surrounded by 2 sigma electron pair hence each ' $C$ ' is $s p$ hybridised.

NCERT 119

2 RBTS PAPER

160842 Assertion:
In the formation of water molecule, both hydrogen and oxygen atoms attain octet of electrons.
Reason :
Oxygen atom forms two ionic or electrovalent bonds with two hydrogen atoms.

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.

Mod. NEET

2 RBTS PAPER

160863 Which of the following statements is true about hybridisation?

1 The hybridised orbitals have different energies for each orbital.

2 The number of hybrid orbitals is equal to the number of atomic orbitals that are hybridised.

3 Hybrid orbitals form multiple bonds.

4 The orbitals with different energies undergo hybridisation.

Mod. NEET

2 RBTS PAPER

160864 Which of the following statements is not true?

1 Ionic bonds are non-directional while covalent bonds are directional.

2 Formation of

π

-bond shortens the distance between the two concerned atoms.

3 Ionic bond is possible between similar and dissimjlar atoms.

4 Linear overlapping of atomic p-orbitals leads to a sigma bond.

Mod. NEET

2 RBTS PAPER

160815 Among the given species identify the isostructural pairs.

1

[{NF}_{3}

and

{BF}_{3}]

2

[{BF}_{4}^{-}

and

{NH}_{4}^{+}]

3

[{BCl}_{3}

and

{BrCl}_{3}]

4

[{NH}_{3}

and

{NO}_{3}^{-}]

Explanation:

${NF}_{3}$ (pyramidal) and ${BF}_{3}$ (trigonal planar)
${BF}_{4}^{-}$ (tetrahedral) and ${NH}_{4}^{+}$ (tetrahedral)
${BCl}_{3}$ (trigonal planar) and ${BrCl}_{3}$ (trigonal bipyramidal)
${NH}_{3}$ (pyramidal) and ${NO}_{3}^{-}$ (trigonal planar)
Thus, ${BF}_{4}^{-}$ and ${NH}_{4}^{+}$ are isostructural species.

Mod. NEET

2 RBTS PAPER

160816 Hybridization of carbon in $C_{3} O_{2}$ is :

1

s p

2

s p^{2}

3

s p^{3}

4

s p^{3} d

Explanation:

$O = C = C = C = O$ each ' $C$ ' is surrounded by 2 sigma electron pair hence each ' $C$ ' is $s p$ hybridised.

NCERT 119

2 RBTS PAPER

160842 Assertion:
In the formation of water molecule, both hydrogen and oxygen atoms attain octet of electrons.
Reason :
Oxygen atom forms two ionic or electrovalent bonds with two hydrogen atoms.

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.

Mod. NEET

2 RBTS PAPER

160863 Which of the following statements is true about hybridisation?

1 The hybridised orbitals have different energies for each orbital.

2 The number of hybrid orbitals is equal to the number of atomic orbitals that are hybridised.

3 Hybrid orbitals form multiple bonds.

4 The orbitals with different energies undergo hybridisation.

Mod. NEET

2 RBTS PAPER

160864 Which of the following statements is not true?

1 Ionic bonds are non-directional while covalent bonds are directional.

2 Formation of

π

-bond shortens the distance between the two concerned atoms.

3 Ionic bond is possible between similar and dissimjlar atoms.

4 Linear overlapping of atomic p-orbitals leads to a sigma bond.

Mod. NEET

2 RBTS PAPER

160815 Among the given species identify the isostructural pairs.

1

[{NF}_{3}

and

{BF}_{3}]

2

[{BF}_{4}^{-}

and

{NH}_{4}^{+}]

3

[{BCl}_{3}

and

{BrCl}_{3}]

4

[{NH}_{3}

and

{NO}_{3}^{-}]

Explanation:

${NF}_{3}$ (pyramidal) and ${BF}_{3}$ (trigonal planar)
${BF}_{4}^{-}$ (tetrahedral) and ${NH}_{4}^{+}$ (tetrahedral)
${BCl}_{3}$ (trigonal planar) and ${BrCl}_{3}$ (trigonal bipyramidal)
${NH}_{3}$ (pyramidal) and ${NO}_{3}^{-}$ (trigonal planar)
Thus, ${BF}_{4}^{-}$ and ${NH}_{4}^{+}$ are isostructural species.

Mod. NEET

2 RBTS PAPER

160816 Hybridization of carbon in $C_{3} O_{2}$ is :

1

s p

2

s p^{2}

3

s p^{3}

4

s p^{3} d

Explanation:

$O = C = C = C = O$ each ' $C$ ' is surrounded by 2 sigma electron pair hence each ' $C$ ' is $s p$ hybridised.

NCERT 119