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The Solid State

31885 Which one of the following metal oxides is antiferromagnetic in nature

1

M n O_{2}

2

T i O_{2}

3

V O_{2}

4

C r O_{2}

Explanation:

$(a)$ $M n O_{2}$ is antiferromagnetic.

The Solid State

31886 In graphite, carbon atoms are joined together due to

1 Ionic bonding

2 Vander Waal’s forces

3 Metallic bonding

4 Covalent bonding

Explanation:

$(d)$ Graphite is $s p^{2}$ hybridised and a covalent crystal.

The Solid State

31887 Which of the following is not correct for ionic crystals

1 They possess high melting point and boiling point

2 All are electrolyte

3 Exhibit the property of isomorphism

4 Exhibit directional properties of the bond

Explanation:

$(d)$ Ionic crystals exhibit non-directional properties of the bond.

The Solid State

31888 Which of the following is a molecular crystal

1

S i C

2

N a C l

3

G r a p h i t e

4

I c e

Explanation:

$(d)$ Ice is a molecular crystal in which the constituent units are molecules and the interparticle forces are hydrogen bonds.

The Solid State

31885 Which one of the following metal oxides is antiferromagnetic in nature

1

M n O_{2}

2

T i O_{2}

3

V O_{2}

4

C r O_{2}

Explanation:

$(a)$ $M n O_{2}$ is antiferromagnetic.

The Solid State

31886 In graphite, carbon atoms are joined together due to

1 Ionic bonding

2 Vander Waal’s forces

3 Metallic bonding

4 Covalent bonding

Explanation:

$(d)$ Graphite is $s p^{2}$ hybridised and a covalent crystal.

The Solid State

31887 Which of the following is not correct for ionic crystals

1 They possess high melting point and boiling point

2 All are electrolyte

3 Exhibit the property of isomorphism

4 Exhibit directional properties of the bond

Explanation:

$(d)$ Ionic crystals exhibit non-directional properties of the bond.

The Solid State

31888 Which of the following is a molecular crystal

1

S i C

2

N a C l

3

G r a p h i t e

4

I c e

Explanation:

$(d)$ Ice is a molecular crystal in which the constituent units are molecules and the interparticle forces are hydrogen bonds.

The Solid State

31885 Which one of the following metal oxides is antiferromagnetic in nature

1

M n O_{2}

2

T i O_{2}

3

V O_{2}

4

C r O_{2}

Explanation:

$(a)$ $M n O_{2}$ is antiferromagnetic.

The Solid State

31886 In graphite, carbon atoms are joined together due to

1 Ionic bonding

2 Vander Waal’s forces

3 Metallic bonding

4 Covalent bonding

Explanation:

$(d)$ Graphite is $s p^{2}$ hybridised and a covalent crystal.

The Solid State

31887 Which of the following is not correct for ionic crystals

1 They possess high melting point and boiling point

2 All are electrolyte

3 Exhibit the property of isomorphism

4 Exhibit directional properties of the bond

Explanation:

$(d)$ Ionic crystals exhibit non-directional properties of the bond.

The Solid State

31888 Which of the following is a molecular crystal

1

S i C

2

N a C l

3

G r a p h i t e

4

I c e

Explanation:

$(d)$ Ice is a molecular crystal in which the constituent units are molecules and the interparticle forces are hydrogen bonds.

The Solid State

31885 Which one of the following metal oxides is antiferromagnetic in nature

1

M n O_{2}

2

T i O_{2}

3

V O_{2}

4

C r O_{2}

Explanation:

$(a)$ $M n O_{2}$ is antiferromagnetic.

The Solid State

31886 In graphite, carbon atoms are joined together due to

1 Ionic bonding

2 Vander Waal’s forces

3 Metallic bonding

4 Covalent bonding

Explanation:

$(d)$ Graphite is $s p^{2}$ hybridised and a covalent crystal.

The Solid State

31887 Which of the following is not correct for ionic crystals

1 They possess high melting point and boiling point

2 All are electrolyte

3 Exhibit the property of isomorphism

4 Exhibit directional properties of the bond

Explanation:

$(d)$ Ionic crystals exhibit non-directional properties of the bond.

The Solid State

31888 Which of the following is a molecular crystal

1

S i C

2

N a C l

3

G r a p h i t e

4

I c e

Explanation:

$(d)$ Ice is a molecular crystal in which the constituent units are molecules and the interparticle forces are hydrogen bonds.