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

SnCI2have ______ shape

Question # 2

Which carbon is more electronegative?

Question # 3

Fluorine molecule is formed by

Question # 4

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

Question # 5

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Question # 6

Covalent compounds are soluble in

Question # 7

Which of the following species has unpaired electrons in antibonding molecular orbitals

Question # 8

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 # 9

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

Question # 10

Which of the following species is paramagnetic?

Question # 11

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

Question # 12

The atomic radius of hydrogen is 37

Question # 13

The nature of interparticle forces in benzene is

Question # 14

The bond angle depends upon the

Question # 15

Tripple bond is present in

Question # 16

The bond order of individual C - C bond is benzene is

Question # 17

The electronegativity of elements in a period from left to right

Question # 18

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

Question # 19

According to MO Theory, the species O2+ possesses

Question # 20

Which of the following molecules has a net dipole moments

Question # 21

H-bonding is not present in

Question # 22

The geometry of 4 sp3hybrid orbitals on an atom is

Question # 23

Elements have the tendency to attain 8 electrons in their valence shell. This is known as

Question # 24

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

Question # 25

B-atom in BF3has

Question # 26

Shielding effect intervening electrons causes

Question # 27

Nitrogen in NH3is sp3hybridized but the bond angle in NH3is 107° and not 109.5° due to

Question # 28

Mg becomes isoelectronic with neon when it

Question # 29

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 # 30

Ca, Mg, Be, Ba, belong to the same group, the order of their ionization energy values is

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Sr.# Question Answer
1 All covalent bonds formed between the two atoms are non-polar when
A. Covalent bond between two non-metal atoms
B. Covalent bond between metal and non-metal
C. Covalent bond between two atoms of same element
D. Covalent bond between metal atoms
2 The shape of gaseous SnCl2is
A. Tetrahedral
B. Linear
C. Angular
D. T-shaped
3 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
4 An ionic compound M2S3is formed by the metal M,, the metal is
A. Ca
B. Ba
C. K
D. Al
5 The electron affinity of chlorine may be represented by the equation
A. Choice 1
B. Choice 2
C. Choice 3
D. Choice 4
6 During the formation of a chemical bond the potential energy of the system
A. Decreases
B. Increases
C. Does not change
D. None of these
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 Which of the following molecules have multiple bonds
A. CH4
B. C2H4
C. C2H6
D. CCI4
9 Which of the following statements is not correct regarding bonding molecular orbitals?
A. Bonding molecular orbitals possess less energy than atomic orbitals from which they are formed
B. Bonding molecular orbitals have low electron density between the two nuclei
C. Every electron in the bonding molecular orbitals contributes to the attraction between atoms
D. Bonding molecular orbitals are formed when the electron waves undergo constructive interference
10 Ionic radius, in a period from left to right
A. Increases
B. Decreases
C. Decreases then increases
D. Increases and decreases
11 Which of the following molecules has unpaired electrons in anti-bonding molecular orbitals?
A. O2
B. N2
C. Br2
D. F2
12 Which of the following is a polar molecules
A. Carbon dioxide
B. Carbon tetrachloride
C. Methanol
D. Ethane
13 The bond order for He2molecule is
A. zero
B. 1/2
C. 1
D. 2
14 Which of the following has polar bond
A. O2
B. N2
C. HCl
D. Cl2
15 Which of the following has zero depole-moment?
A. CIF
B. PCl3
C. SiF4
D. CFCl4
16 The bond order O2molecule is
A. 1
B. 2
C. 3
D. Zero
17 The driving force for making a bond is
A. To attain noble gas electronic configuration
B. To make soled compounds
C. To make different compounds
D. To make gaseous substances
18
Question Image
A. The ionization energy of A is high and electron affinity of B is low
B. The ionization energy of A is low and electron affinity of B is high
C. Both the ionization energy of A and electron off affinity of B are high
D. Both the ionization energy of A and electron affinity of B are low
19 The shape of CIO-3according to valence shell electron pair repulsion theory will be
A. Planar triangle
B. Pyramidal
C. Tetrahedral
D. Square planar
20
Question Image
A. Excitantion of an electron from 2s to 2p-orbital
B. Transfer of three electrons from B to the other atoms
C. Excitation of two electrons form 2s orbital to 2p orbital
D. Formation of molecular ion
21 Inter molecular forces in solid hydrogen are
A. Covalent forces
B. Van der Waal forces or London dispersion forces
C. Hydrogen bonds
D. All of these
22 The three N - Hσ-bonds are made by
A. sp3- s overlap
B. sp2- s overlap
C. P - p overlap
D. sp - overlap
23 Shape of CIO3is
A. Triangular pyramidal
B. Tetrahedral
C. Triangular planar
D. Triangular bipyramidal
24 Ca, Mg, Be, Ba, belong to the same group, the order of their ionization energy values is
A. Be > Mg> Ca > Ba
B. Ba > Ca > Mg > Be
C. Ca > Mg > Be > Ba
D. Ba > Mg > Ca > Be
25 Generally the bond formed by metals with non-metals is
A. Ionic
B. Covalent
C. Polar
D. Non- polar
26 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
27 In H2O molecule the bond angle is
A. 90°
B. 109.5°
C. 107°
D. 104.5°
28 The tendency of an atom to attract shared electron pair towards itself is called
A. Covelent bond
B. Electronegativity
C. Ionization potential
D. Electronic affinity
29 Elements have the tendency to attain 8 electrons in their valence shell. This is known as
A. Octer rule
B. Hunds rule
C. Pauli exclusion principle
D. Auf ban principle
30 The bond order of individual C - C bond is benzene is
A. One
B. Two
C. Between one and two
D. One and two alternately

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