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

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

Question # 2

Which one of these is weakest?

Question # 3

Which of the following hydrides has the lowest boiling point?

Question # 4

The number of bonds in nitrogen molecule is

Question # 5

When two hydrogen atoms approach to form a chemical bond

Question # 6

Generally ionization energy of atoms decreases by

Question # 7

The three N - Hσ-bonds are made by

Question # 8

Noble gases have the electronic configuration with their valance shell ns2np6except one

Question # 9

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

Question # 10

The number of electron pairs shared in carbon tetrachloride molecule is

Question # 11

Which of the following geometry is associated with the compound in which the central atom assumes sp3d hybridization?

Question # 12

The equation for the first ionization energy of hydrogen is

Question # 13

The structure of ICI2is

Question # 14

The atomic radius of hydrogen is 37

Question # 15

Covalent compounds are soluble in

Question # 16

Ionic radius, in a period from left to right

Question # 17

When an electron is absorbed in an empty or partially filled orbital of an atom, the energy released is called

Question # 18

A bond between two atoms may be obtained by sharing of electrons such a bond is called

Question # 19

The formation of compounds like PF5, BCI3, SF6indicates that

Question # 20

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

Question # 21

SnCI2have ______ shape

Question # 22

The bond order in No is 2.5 while that in NO+is 3.Which of the following statements is true for these two species?

Question # 23

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

Question # 24

The driving force for making a bond is

Question # 25

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

Question # 26

The boiling point of heavy water is

Question # 27

Generally the bond formed by metals with non-metals is

Question # 28

Inter molecular forces in solid hydrogen are

Question # 29

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

Question # 30

The shape of the molecule SF2Cl2is

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ECAT Class Chemistry Chapter 6 Important MCQ's

Sr.# Question Answer
1 Fluorine molecule is formed by
A. The axial p-p overlap
B. The sidewise p-p overlap
C. The axial s-p overlap
D. The overlap of two sp2hybrid orbitals
2 Atomic number of Al is 13. When it forms ionic bond with oxygen the number of electrons lost by 1 Al atom is
A. 1
B. 2
C. 3
D. 4
3 The electron affinity of chlorine may be represented by the equation
4 According to MO Theory, the species O2+ possesses
A. bond order of 2.5
B. three unpaired
C. diamagnetic character
D. stability lower then O2
5 Which of the following species has unpaired electrons in antibonding molecular orbitals
6 The covalent bonds are
A. Unidirectional
B. Bi-directional
C. Non-directional
D. Multi-directional
7 When of the following is isolelectronic with krypton
A. Ca++
B. Al+++
C. Br-1
D. I-1
8 Maximum hydrogen bonds in water are
A. 4
B. 3
C. 2
D. 8
9 The bond angle H - O - H in ice ins closest to
A. 120° , 28'
B. 60°
C. 90°
D. 109°
10 Noble gases have the electronic configuration with their valance shell ns2np6except one
A. He
B. Ne
C. Kr
D. Xe

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