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

Size of an anion is increased as compared to its atom because of the

Question # 2

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

Question # 3

Planar geometry of molecules is due to

Question # 4

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

Question # 5

According to MO Theory, the species O2+ possesses

Question # 6

Electronegativity values of the elements F, CI and Br vary

Question # 7

In a group the atomic size increase downward due to

Question # 8

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

Question # 9

Which of the following charge

Question # 10

The electronegativity of elements in a period from left to right

Question # 11

The shape of methanol, ammonia and water molecule can be explained by assuming

Question # 12

Generally electron affinities for elements in a period from left to right

Question # 13

Which of the following has zero depole-moment?

Question # 14

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

Question # 15

Which one of these is weakest?

Question # 16

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 # 17

The force which holds the atoms together to form a compound is called

Question # 18

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

Question # 19

The ionic bonds are

Question # 20

Coordinate covalent bond is present in the molecules

Question # 21

On the basis of VSEPR theory SO2is a

Question # 22

Covalent compounds are soluble in

Question # 23

The Electro-negatively difference for ionic bond must be greater than

Question # 24

Which of the following molecules have multiple bonds

Question # 25

In which of the following theories the hybridizationis considered

Question # 26

Shielding effect intervening electrons causes

Question # 27

The degree of polarity of molecule is known as its

Question # 28

Three sp2hybrid are co-planar at an angle of

Question # 29

Shape of CIO3is

Question # 30

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

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ECAT Class Chemistry Chapter 6 Important MCQ's

Sr.# Question Answer
1 Which carbon is more electronegative?
A. sp3- hybridized carbon
B. sp-hybridized carbon
C. sp2-hybridized carbon
D. always same irrespective of its hybrid state
2 Among the alkaline earth metals the element forming predominantly covalent compounds is
A. Be
B. Mg
C. Sr
D. calcium
3 Which for the following has no dipole moment
A. HCI
B. H2S
C. H2O
D. CO2
4 Number of sigma bonds in P4O10is
A. 6
B. 7
C. 17
D. 16
5 The bond angle H - O - H in ice ins closest to
A. 120° , 28'
B. 60°
C. 90°
D. 109°
6 Ionization energies increase from left to right along the period due to
A. Increase in nuclear charge
B. Repulsion of electron increases
C. Repulsion of protons increase
D. Atomic size increase along the period
7 Size of an anion is increased as compared to its atom because of the
A. Addition of new shell
B. Repulsion of electrons in the valence shell
C. Decrease in nuclear charge
D. Increase in the unclear charge
8 Nitrogen in NH3is sp3hybridized but the bond angle in NH3is 107° and not 109.5° due to
A. sp3orbital planar
B. sp3orbital trigonal
C. Repulsion between lone pair and bonded pairs
D. None of them
9 The bond order for He2molecule is
A. zero
B. 1/2
C. 1
D. 2
10 The bond angles in methane CH4are equal to
A. 109.5°
B. 107.5°
C. 104.5°
D. 120°

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