Question # 1

SP^3-hybridization in important in describing the bonding in

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The paramagnetic behaviour of oxygen is well explaned on the basis of.

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M.O Theory

N.B Theory

VSEPR Theory

CF theory

Fluorine molecule (F₂) is formed by the overlap of

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s - s orbital

s - p orbital

p - p head on overlapping of orbitals

p - p parallel overlapping of orbitals

Chlorine atom and chloride Cl- ions

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Have same chemical and physical properties

Are allotropes of chlorine

Have same number of electrons

Have same number of proton

Which one of the following has the greater ionic characters in it.

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HF

HCl

H2O

H2

Which bond has more ionic characters in it.

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C - F

N - F

O - F

F - F

The shielding effect of the inner electrons is responsible for

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Increasing ionization energy values

Decreasing ionization energy values

Increasing electron affinity

Increasing electonegativity

Both CH4 and NH3 are four electron pair system the angles of CH4 and NH3 are 109.5^o and 107.5 ^o respectively. This deviation is due to.

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Hydrogen bonding in ammonia

Lone pair attraction

Lone pair occupy more space and repel to other bond pairs

Lone pair lone pair repulsion

Which of the following molecule obey octet rule.

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BF3

BCl3

NH2

SF6

The molecule having zero dipole moment is.

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NH3

CHCl3

H2O

BF3

Which one of the following molecules is paramagnetic.

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H2

He

N2

O2

Ionic bond is formed by combination of groups

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IA and VIII

II A and VII A

IV A and VA

VIA and VII A

A molecule has two ions pairs and two bond pairs around the central atom. The shape of molecule is.

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Linear

Pyramidal

Angular

Tetrahedral

The nature of bond in diamond is

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Electrovalent

Metallic

Coordinate covalent

Covalent

Dipole moment is defined as.

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Charge x distance

Charge x Debye

Charge x displacement

Charge x bond energy

The bond angle in NH3 molecule is

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109.5^o

107.5^o

104.5^o

106^o

Which of the following molecule has zero dipole moment.

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NH3

CHCl3

H2O

BF3

An ionic compound A⁺B^-is most likely to be formed when

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The ionization energy of A is high and electron affinity of B is low

The ionization energy of A is low and electron affinity of B is high

Both the ionization energy of A and electron affinity of B are high

Both the ionization energy of A and electron affinity of B are low

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Chemistry Fsc Part 1 Chapter 6 Online Test MCQs With Answers

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