ECAT Pre Engineering Chemistry Chapter 6 MCQ Test With Answer

Question # 1

The bond angle H - O - H in ice ins closest to

120° , 28^' A
60° B
90° C
109° D

Question # 2

Which of the following phenomena will occur when two atoms of the elements having same spin of electron approach for bonding?

Orbital overlap will not occur A
Bonding will not occur B
Both (A) and (B) are correct C
None of the above are correct D

Question # 3

From the difference between expected bond energies for the normal covalent bond and experimentally determined values Pauling calculated the values of

Ionization potential of elements A
Electron affinity of elements B
Electronegativity of elements C
Bond length D

Question # 4

In H₂O molecule the bond angle is

90° A
109.5° B
107° C
104.5° D

Question # 5

According to VSEPR theory, the shape of the water molecule is

Octahedral A
Distorted tetrahedral B
Planar triangle C
Linear D

Question # 6

Which of the following molecules has a net dipole moments

CO₂ A
CS₂ B
SO₂ C
CCI₄ D

Question # 7

Electronegativity values of the elements F, CI and Br vary

F > CI > Br A
Br > CI > F B
Cl > Br > F C
CI > F > Br D

Question # 8

The electronegativeities of F,Cl,Br and I are 4.0,3.0,2.8,2.5 respectively.Hydrogen halide with a high percentage of ionic character is

HF A
HCL B
HBr C
HI D

Question # 9

Inter molecular forces in solid hydrogen are

Covalent forces A
Van der Waal forces or London dispersion forces B
Hydrogen bonds C
All of these D

Question # 10

Which of the following molecules has unpaired electrons in anti-bonding molecular orbitals?

O₂ A
N₂ B
Br₂ C
F₂ D

Question # 11

Which of the hydrogen halides has the highest percentage of ionic character

HCl A
HBr B
HF C
HI D

Question # 12

The number of antibonding electron pairs in O^2-molecular ion on the basis of MOT is

4 A
3 B
2 C
5 D

Question # 13

The shape of gaseous SnCl₂is

Tetrahedral A
Linear B
Angular C
T-shaped D

Question # 14

Shape of CIO₃is

Triangular pyramidal A
Tetrahedral B
Triangular planar C
Triangular bipyramidal D

Question # 15

Generally ionization energy of atoms decreases by

Decreases in atomic size A
Increase in atomic size B
Increase in nuclear charge C
None of these D

Question # 16

XeF₄has shape of

Sphere A
Trigonal bipyramidal B
Tetrahedral C
Square planar D

Question # 17

Hydrogen chloride molecule contains

Covalent bond A
Double bond B
Co-ordinate bond C
Electrovalent bond D

Question # 18

Antibonding MO is formed by

Addition of atomic orbitals A
Substraction of atomic orbitals B
Multiplication of atomic orbitals C
None of these D

Question # 19

If two lone pairs are present then bond angle of tetrahedral compound reduces to ______ degrees

109.5° A
107.5° B
104.5° C
None D

Question # 20

All covalent bonds formed between the two atoms are non-polar when

Covalent bond between two non-metal atoms A
Covalent bond between metal and non-metal B
Covalent bond between two atoms of same element C
Covalent bond between metal atoms D

Question # 21

The formation of compounds like PF₅, BCI₃, SF₆indicates that

These halides are ionic A
These halides are covalent B
They are Lewis acids C
Octet rule not obeyed so the rule is not universal D

Question # 22

The electronegativity of elements in a period from left to right

Decreases A
Increases B
First decreases then increases C
First increases then decreases D

Question # 23

H-bonding is not present in

Glycerine A
Water B
Hydrogen sulphide C
Hydrogen fluride D

Question # 24

In which of the following theories the hybridizationis considered

Vsepr A
Lewis B
Molecule orbital C
Valence bond D

Question # 25

The shape of CIO^-₃according to valence shell electron pair repulsion theory will be

Planar triangle A
Pyramidal B
Tetrahedral C
Square planar D

Question # 26

The electron affinity of chlorine may be represented by the equation

A
B
C
D

Question # 27

Number of sigma bonds in P₄O₁₀is

6 A
7 B
17 C
16 D

Question # 28

The bond order O₂molecule is

1 A
2 B
3 C
Zero D

Question # 29

Among the alkaline earth metals the element forming predominantly covalent compounds is

Be A
Mg B
Sr C
calcium D

Question # 30

During the formation of a chemical bond the potential energy of the system

Decreases A
Increases B
Does not change C
None of these D

Sr.#	Question	Answer
1	Electronegativity values of the elements F, CI and Br vary	A. F > CI > Br B. Br > CI > F C. Cl > Br > F D. CI > F > Br
2	Which of the following is a polar molecules	A. Carbon dioxide B. Carbon tetrachloride C. Methanol D. Ethane
3	Number of sigma bonds in P₄O₁₀is	A. 6 B. 7 C. 17 D. 16
4	Which of the following phenomena will occur when two atoms of the elements having same spin of electron approach for bonding?	A. Orbital overlap will not occur B. Bonding will not occur C. Both (A) and (B) are correct D. None of the above are correct
5	The shape of CIO^-₃according to valence shell electron pair repulsion theory will be	A. Planar triangle B. Pyramidal C. Tetrahedral D. Square planar
6	The bond angle H - O - H in ice ins closest to	A. 120° , 28^' B. 60° C. 90° D. 109°
7	The electronegativity of elements in a period from left to right	A. Decreases B. Increases C. First decreases then increases D. First increases then decreases
8	Hydrogen chloride molecule contains	A. Covalent bond B. Double bond C. Co-ordinate bond D. Electrovalent bond
9	Maximum hydrogen bonds in water are	A. 4 B. 3 C. 2 D. 8
10	The Electro-negatively difference for ionic bond must be greater than	A. 1.6 B. 1.7 C. 1.8 D. 1.0

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ECAT Pre Engineering Chemistry Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 6 Chemical Bonding

ECAT Chemistry Chapter 6 Chemical Bonding

The bond angle H - O - H in ice ins closest to

Which of the following phenomena will occur when two atoms of the elements having same spin of electron approach for bonding?

From the difference between expected bond energies for the normal covalent bond and experimentally determined values Pauling calculated the values of

In H2O molecule the bond angle is

According to VSEPR theory, the shape of the water molecule is

Which of the following molecules has a net dipole moments

Electronegativity values of the elements F, CI and Br vary

The electronegativeities of F,Cl,Br and I are 4.0,3.0,2.8,2.5 respectively.Hydrogen halide with a high percentage of ionic character is

Inter molecular forces in solid hydrogen are

Which of the following molecules has unpaired electrons in anti-bonding molecular orbitals?

Which of the hydrogen halides has the highest percentage of ionic character

The number of antibonding electron pairs in O2-molecular ion on the basis of MOT is

The shape of gaseous SnCl2is

Shape of CIO3is

Generally ionization energy of atoms decreases by

XeF4has shape of

Hydrogen chloride molecule contains

Antibonding MO is formed by

If two lone pairs are present then bond angle of tetrahedral compound reduces to ______ degrees

All covalent bonds formed between the two atoms are non-polar when

The formation of compounds like PF5, BCI3, SF6indicates that

The electronegativity of elements in a period from left to right

H-bonding is not present in

In which of the following theories the hybridizationis considered

The shape of CIO-3according to valence shell electron pair repulsion theory will be

The electron affinity of chlorine may be represented by the equation

Number of sigma bonds in P4O10is

The bond order O2molecule is

Among the alkaline earth metals the element forming predominantly covalent compounds is

During the formation of a chemical bond the potential energy of the system

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