ECAT Pre Engineering Chemistry Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 6 Chemical Bonding

Try The MCQ's Test For ECAT Chemistry Chapter 6 Chemical Bonding

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ECAT Chemistry Chapter 6 Chemical Bonding

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Question # 1

Two H-atom combine to form a strong H2molecule due to

Question # 2

Which is made by coordinate covalent bond

Question # 3

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

Question # 4

Shielding effect intervening electrons causes

Question # 5

When elements of group I react with the elements of group VIA theory form

Question # 6

The ionic bonds are

Question # 7

The number of electron pairs shared in carbon tetrachloride molecule is

Question # 8

Planar geometry of molecules is due to

Question # 9

According to MO Theory, the species O2+ possesses

Question # 10

An ionic compound M2S3is formed by the metal M,, the metal is

Question # 11

Water H2O is liquid while hydrogen sulphide H2S is a gas beause

Question # 12

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

Question # 13

The electron affinity of chlorine may be represented by the equation

Question # 14

SnCI2have ______ shape

Question # 15

The bond order for He2molecule is

Question # 16

Which of the following has highest bond order

Question # 17

The boiling point of heavy water is

Question # 18

H-bonding is not present in

Question # 19

Electronegativity values of the elements F, CI and Br vary

Question # 20

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

Question # 21

The overlapping of two partially filled atomic orbital is in such a way that the probability of finding the electron pair is maximum along the axis joining the two nuclei, the bond is

Question # 22

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

Question # 23

When two hydrogen atoms approach to form a chemical bond

Question # 24

Which of the following hydrides has the lowest boiling point?

Question # 25

The most suitable method of the separation of a mixture of ortho and para-nitrophenol mixed in the ratio of 1: 1 is

Question # 26

In a group the atomic size increase downward due to

Question # 27

Atomic number of Al is 13. When it forms ionic bond with oxygen the number of electrons lost by 1 Al atom is

Question # 28

B-atom in BF3has

Question # 29

The atomic radius of hydrogen is 37

Question # 30

When of the following is isolelectronic with krypton

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ECAT Chemistry Chapter 6 Important MCQ's

Sr.# Question Answer
1 N-atom forms three covalent bonds, its electronic configuration is
2 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
A. HF
B. HCL
C. HBr
D. HI
3 Hydrogen chloride molecule contains
A. Covalent bond
B. Double bond
C. Co-ordinate bond
D. Electrovalent bond
4 Which of the following has highest bond order
5 From the difference between expected bond energies for the normal covalent bond and experimentally determined values Pauling calculated the values of
A. Ionization potential of elements
B. Electron affinity of elements
C. Electronegativity of elements
D. Bond length
6 XeF4has shape of
A. Sphere
B. Trigonal bipyramidal
C. Tetrahedral
D. Square planar
7 Which of the following geometry is associated with the compound in which the central atom assumes sp3d hybridization?
A. Planar
B. Pyramidal
C. Angular
D. Trigonal bipyramidal
8 Outer shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be
A. XY
B. X2Y
C. X2Y3
D. XY2
9 If two lone pairs are present then bond angle of tetrahedral compound reduces to ______ degrees
A. 109.5°
B. 107.5°
C. 104.5°
D. None
10 In which of the following theories the hybridizationis considered
A. Vsepr
B. Lewis
C. Molecule orbital
D. Valence bond

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